HUBER Report

News forICustnomers and tFriendseof HUBERrTECHNnOLOGY ationaSepl tember 2007

CONTENTS Removal of fat and grease with a HUBER HDF-10 EDITORAL Mechanical Treatment Solutions 2 Industrial Applications & Solutions 6 Solution for a Slaughterhouse in Norway Fat and grease from the slaughter - Sludge Treatment Solutions 10 house in Ringsaker caused severe Filtration & ReUse Solutions 12 problems in the municipal sewer sys - tem and wastewater treatment plant. HUBER International 15 A HUBER solution was selected for pre-treatment of the wastewater at the slaughterhouse. The wastewater is first screened and then treated in a dissolved air flotation process. Over 80 % of the particulate fat and grea - sed are removed without the need for IN BRIEF chemical pre-treatment. The remo - ved fatty flotate sludge has a solids Mechanical Treatment Solutions concentration of 6 to 8 %. Its volume Three self-cleaning Step Screens with is only 1 to 2 % of the wastewater 6 mm spacing were specified for the flow. The flotate sludge is hauled to a rendering facility. upgrade of the wastewater treatment With this newsletter we are sending you plant of Ayacucho, but the responsi - the first edition of our International ® ble officer of the regulatory authority Continuation on page 9 ROTAMAT RoS 3/3 for flotate sludge dewatering with flocculation reactor HUBER Report. This newsletter is inten - raised the following objections: there ded to keep you informed, on a regular was not a single self-cleaning screen basis (presumably twice a year), about in Peru; a Step Screen could not HUBER supports a private aid project recent developments of HUBER TECH - NOLOGY. We will provide information handle the screenings load; and the about our products and processes, their plant operators would not be able to applications, and our customers’ com - operate and maintain the screens. Boy Scouts Help Children in Indonesia ments. We want to provide you with Finally we supplied two Step Screens The boy scouts of the Bavarian town practical information about, and sugge - SSF. Now the regulators even recom - of Spalt, a town located not far away stions of, advanced solutions for our customers’ sewage and sludge pro - mend our screens for other projects from Berching, have collected 1,500 Euros during their last Christmas sea - blems, to their own benefit and that of in Peru. son charity drive. They approached our common environment. Page: 2 HUBER with their wish to donate this We will also keep you updated on novel money to fund a small water project concepts that we are developing and in a developing country. In particular, implementing in cooperation with our the boy scouts want to support a pro - customers. Sludge Treatment Solutions ject that benefits children. Together Since 1872, for over 135 years, HUBER with the boy scouts we selected Indo - TECHNOLOGY has focused on water Sludges from central wastewater nesia as our target country. Together and thus gained wide expertise. On the plants usually do not meet the strin - with the local administration we are basis of our old tradition and profound gent Swedish requirements for land looking for a suitable application, knowledge we will continue to shape application and must be expensively such as an orphanage. The project our future technologies to meet the incinerated. Domestic septic sludge, shall provide wastewater treatment changing requirements of our custo - mers and environmental needs. however, may be land applied after and effluent reuse for irrigation of a We are committed to the principles of proper treatment. This is the reason vegetable garden or orchard. innovation, quality and sustainability, why the city of Östersund selected Continued on page 14 Boy Scouts visiting the HUBER factory in Berching and we are proving our commitment in our SeptageTreat Solution that inclu - our daily work. des screening, grit removal and slud - We understand innovation as develop - ge dewatering. Removed filtrate is ment and improvement of our produc - treated in their central wastewater Septage receiving stations RoS3 and super-launder wash-presses WAP/SL ts, processes and customer relations - treatment plant. The sludge cake is hip. then aerobically composted for stabi - We understand quality as continuing lization and the produced biosolids Well Received Septic Sludge in Finland improvement of our products, proces - ses and customer services. are used for soil improvement. Septic sludge of around 70,000 inha - And we finally understand sustainabili - bitants is collected in the surrounding Page: 10 ty as our commitment to provide servi - area of the city of Lahti. Twelve diffe - ces for our products over their entire rent companies haul septic sludge. life, as long as you use them, not only Filtration & ReUse Solutions To prevent that they dump septic by their maintenance and repairing, but sludge into sewers or on wasteland, also by optimizing their performance. Due to freshwater scarcity, the the city was looking for a place and In our view, sustainability also implies Cypriote water administration is very method of treatment. The city sele - freshwater conservation, closing of interested in HUBER DeSa/R ® Soluti - cted a HUBER system for septic slud - water loops and wastewater treatment ge receiving and pre-treatment at ons. Two conventional semi-centrali - for reuse. their existing central wastewater tre - zed wastewater treatment plants in We hope that our International HUBER atment plant. A card reader and flow Cyprus are currently upgraded into Report will serve you as a valuable meter permit data collection and bil - compact and highly efficient HUBER source of information. We encourage ling. The incoming septic sludge is membrane bio-reactor (MBR) you to help us by making suggestions screened and the screenings, toget - and also sending us critical comments. systems. The plants are located her with those from their existing beneath parking lots – space is very wastewater screens, are intensively limited. We supply as core compo - washed, dewatered and compacted ® Sincerely yours, nents our MembraneClearBox (MCB) in our super-launder wash-press membrane filters. Their clear and WAP/SL. In comparison with their for - disinfected permeate effluent will be mer piston press, our unit reduces reused for irrigation. their screenings mass to 25%. The Quality Lahti: Septage receiving station RoS3 with integrated IRGA for screenings was - Company – Page: 14 Continued on page 10 hing and RoS8T screw conveyor for forwarding Worldwide Mechanical Treatment Solutions Page 2

The regulator did not believe it until we proved it Our First STEP SCREEN ® Reference in Peru - 2,760 m Above the Sea During 1999 the author, working for ted up two Step Screens SSF 4000 Consulting Engineers Salzgitter and a screw conveyor Ro 8t together GmbH (CES), designed new trickling with the control panel in February filters and maturation ponds. He also 2004 and trained the operators for 10 designed upgrading of the mechani - days. The system was officially com - cal pre-treatment with automatically missioned in May 2004. In June raked screens and new grit cham - HUBER replaced a defective PLC in bers. He specified three step screens the control panel as part of their war - Ayacucho with 6 mm spac ing. ranty. Since our Step Screens have been operating for over 16,000 hours The responsible officer of the regula - and remove an average of 3 m 3/d of tory authority in Lima did not approve screenings. the design specifications of the step screen. He was convinced it would After two and a half years the opera - not work and argued that that there tors are very happy with our equip - was not a single self-cleaning screen ment and particularly our technical The City of Ayacucho is located in the in Peru. A step screen would not be support. After this long and good ope - south-central Andean region, about able to automatically remove 2 m 3/d rator experience with our first refe - 600 km south-west of the capital screenings and the personnel would rence system in this country, the Lima, and is the capital of the provin - not be able to operate and maintain regulating officers in Lima are now ce of the same name. Its altitude is such screens properly. After long even recommending step screens for 2,760 m above the sea. negotiations, finally two step screens mechanical pre-treatment. It took a long time to take this hurdle. The existing wastewater treatment and a screw conveyor as well as their plant was started up in 1974 and pro - installation and operator training were specified in the tender docu - vided with a manually raked bar Luis Guijarro ments. screen, a grit trap, two Imhoff tanks Consulting Engineer of CES and a pair of non-aerated lagoons. HUBER supplied, installed and star - [email protected] Screenings removed and lifted by our SSF

Before: Manually raked bar screen After: Our STEP SCREEN ® units SSF in Ayacucho after 2.5 years operation

Vertical drum screen HUBER ROTAMAT ® RoK 4 Solution for Plugging Problems in Wisconsin, USA Their consulting engineer of Crispell- widest range of screening technolo - floor for disposal. The RoK 4 does not tion. The plant has not experienced Synder considered many types of gies worldwide, had the solution to only screen the wastewater but also any clogging problems since the screens including step screens, band solve this problem. The RoK 4 vertical washes, transports, dewater, com - screen was brought online. The Villa - screens, climber screens and in chan - drum screen could be installed in the pacts and deposits the screenings ge of Oostburg is very satisfied with nel drum screens. None of those very short channel and could lift the into an endless plastic bag. All this is the performance of the new screen. screenings to the desired height screens would fit in the building accomplished on one square meter of This RoK 4 screen was the first of its without any need to modify the buil - without major modifications to the floor space. type of this screen in the State of Wis - ding. It was the consultant’s idea to structure that would have made the consin. In a little over a year our local place the screen basket in the same We modified the standard machine’s project cost-prohibitive. representatives, Energenecs Inc., location as the grinder and lift the piped inlet to match the have provided similar RoK 4 scree - HUBER TECHNOLOGY, offering the screenings vertically to the upper inlet-channel’s rectangular cross section. We accomplished this by ning solutions for eight other commu - removing the pipe inlet and modify - nities in Wisconsin. Oostburg ing the inlet box with angles that could be attached to the channel. The Gary Wesselschmidt design team working with HUBER Sales Manager Mid-Western engineers came up with a Region, Huber Technology Inc. clean, safe and cost effective solu - [email protected]

The Village of Oostburg, WI was experiencing clogging problems througout their wastewater treat - ment plant. The clogging was due to a malfunctioning comminutor of their influent pump station in their head - works structure. The existing grinder was often out of service and repairs were very costly. It was the desire of the City to upgrade the plant by installation of a fine screen. While the solution seemed simple their design and equipment selection proved to be a challenge. The buil - ding is narrow, the inlet channel very short and in the middle of the channel is the comminutor pit. The channel is located twenty feet below the opera - ting floor. The screenings need to be lifted up to the operating floor for dis - posal. A staircase further reduced the Lower section of the RoK 4 with amount of available space in which to Chief Operator Phil Dulmes: „This is the best thing we ever did. We no longer Vertical screenings transport tube of screen basket and IRGA for scree - install a screen. have to manually clean out rags and other debris“ the RoK 4 nings washing Page 3 Mechanical Treatment Solutions

HUBER super-launder wash-presses WAP/SL excel at Chelmsford WWTP Solution for Screenings Problems at Anglian Water, UK and compact up to 4 m 3/h wet scree - nings. However, at peak times the units automatically alter their opera - ting cycle such that each can handle 6 m 3/h. Since Anglian Water has replaced their existing screenings handling system with our super-launder wash- Chelmsford presses WAP/SL, they have made sig - nificant savings in operating and maintenance costs. The operators are happy because our units work far more reliably than their prior system. Because Anglian Water has been so content with our WAP/SL super-laun - Two large escalator screens with 6 screens with a screw compactor on der wash-presses, we have supplied mm perforation are installed at the the discharge side. units of various sizes for replacement inlet of the Chelmsford wastewater The operators experienced wear pro - of failing screenings handling sys - treatment plant with each screen blems of the macerator pumps due to tems to other Anglian Water plants, arranged to discharge the screenings presence of grit, but their major pro - e.g. Southend, Rochford, Wickford into a common launder channel. The blem was that the washer dewaterers and Burnham on Crouch and many launder water and the screenings were not able to process the amount others. We also supply our units to were originally discharged into a of solids fed to them during peak other UK water companies and have macerator tank located at the end of times. over 100 units installed. It appears the launder channel. A pair of mace - that our WAP/SL has become the Anglian Water decided to replace rator pumps forwarded the macera - accepted state-of-the-art screenings their screenings handling system ted solids and the water to a pair of wash-press in the United Kingdom. washer dewaterers from where the with a pair of super-launder wash- dewatered solids were discharged presses HUBER WAP/SL size 6, into a skip located alongside the units though this involved some modifica - Dale Foster in an odour controlled container. tion of the existing launder channel Regional Manager for Basically the existing screenings system. Each WAP/SL unit is desi - Huber Technology, UK handling plant were D-shaped gned to intensively wash, dewater [email protected] Silchester, UK: WAP/SL fed through a launder tube

Twelve 2.6 diameter Ro 1 screens in China’s boom town Perforated band screens EscaMax ® for Anglian Water ROTAMAT ® Fine Screens lined up in Two EscaMax ® Screens Shanghai installed in England mechanical wastewater pre-treat - can handle a 500,000 m 3/d wastewa - processing system. We offered a pair ment. ter flow. However, this time we supp - of EscaMax ® 4000 perforated band lied twelve Ro 1 screens of an impro - screens with a width of 752 mm and a Because of this excellent reference ved version that maintains all its capacity of 101 l/s, installed at an installation, Ro 1 fine screens were excellent features, but is less expen - angle of 60° within the channel, a also selected for the first construction sive to manufacture. The screens WAP/SL size 2, and control panels. phase of the plant Zhuyuan in 2003 were installed in twelve parallel chan - The local contractor would carry out and four Ro 1 screens with a screen nels over a width of 42 m. They are the removal of the failing equipment, basket diameter of 2.2 m were orde - lined up like pearls on a string. supply of a launder channel and com - red and installed. Only three years Sleaford plete mechanical and electrical later the second construction phase installation. Shanghai began. This time we received an Franz Spenger Our proposal was accepted by Angli - order for twelve Ro 1 screens, again Product Manager of the an Water and an order was placed in with a 2.6 m diameter, the same size Mechanical Treatment Division April 2006. as supplied seven years earlier. They [email protected] Anglian Water approached HUBER in January 2006 and asked us to offer a The plant was commissioned in solution for resolving problems at November 2006 and operator trai - There is hardly another city worldwi - their Sleaford plant where large ning was carried out in January 2007. de that is growing with such a breath- amounts of screenings passing The operators are delighted with the taking speed as Shanghai, China’s through the inlet works and impairing new equipment and we are using this boom town. But such rapid growth site as an excellent reference for the downstream processes. The opera - ® comes at a high price. Shanghai’s tors were also experiencing problems HUBER EscaMax . infrastructure can hardly cope. It with their existing screenings proces - happens time and again that the sing system. power stations can not supply Dale Foster enough electricity, or that even the In co-operation with a local Regional Manager for 12 lane main highway is jammed to a contractor we proposed to remove Huber Technology, UK stand-still. Of course, sewers and tre - the existing screen and screenings [email protected] atment plants are also under strain and the city administration is doing its best to keep up. Seven years ago we supplied a pair of ROTAMAT ® Fine Screen units Ro 1 with a screen basket diameter of 2.6 m for the Bai Long Gang wastewater treatment plant, serving a high-tech industrial park in the city district Pudong. Our screens proved their ® excellent performance and reliability, Two of a total of twelve ROTAMAT Fine Screens Ro 1/2600 supplied for the which is particularly important for second construction phase of WWTP Zhuyu

Sleaford, UK: Perforated band screens EscaMax ® 4000

Three ROTAMAT ® Fine Screens Ro 1 / 2200 installed on WWTP Zhuyuan Sleaford, UK: WAP/SL size 4 with lauder tube Mechanical Treatment Solutions Page 4

Three HUBER RakeMax ® multi-rake bar screens in the City of Augsburg HUBER supplied all mechanical pre-treatment equipment State-of-the-Art Screens for a Big and New Headworks for the Ancient City Bavarian City of Straubing HUBER receiving station RoSF 8V. The station includes a feed tank, a vertical conveyor screw and a wash drum RoSF 9. All our equipment had to be installed during uninterrupted plant operation. This was only possible by excellent cooperation between the plants ope - Straubing ration managers, Mr. Buchmeier and Mr. Nikolaus, their consulting engi - Augsburg neer, Mr. Holle of ARTEMIS Inc., and our HUBER field service technicians. The plant’s management is very con - Straubing is a city in Bavaria, located tent with the operation and perfor - The Swebish-Bavarian city of Augs - about 60 km north-east of its capital mance of the entire HUBER equip - burg was founded in ancient times, Munich. The wastewater treatment ment. They are happy about the good over 2,000 years ago, by the Romans plant of Straubing is designed for a capture rate, low hydraulic head and and named after Emperor Augustus. total population of 220,000. In 2006 steep lifting capability of their SSV Its wastewater treatment plant is the plant’s inlet structure was refur - screens, about the excellent perfor - designed to serve a total population bished with new HUBER equipment mance to minimize screenings mass of 600,000. of their WAP/SL, and about the out- The two new Vertical Step Screens standing grit washing quality of their Over a year ago the city replaced SSV have a width of 1,776 mm and a RoSF 4. And they are glad that they their ancient climber screens with lamella spacing of 6 mm. The scree - ® now can treat their sludge from three HUBER RakeMax multi-rake nings are intensively washed and bar screens that have a width of sewer flushing with their RoSF 8V compacted in a new super-launder without any problems. 1,952 mm and a bar spacing of 8 mm. wash-press WAP/SL size 6. Grit from At the same time they replaced their their grit channels is now washed in old wash-presses with our most effe - ® our ROTAMAT COANDA grit washer Helmut Schmidt, ctive super-launder / high-pressure RoSF 4. In addition, sludge from Sales Office Southern Bavaria WAP/SL/HP units. These units not sewer flushing operation is fed to a [email protected] only intensively wash batches of screening like our WAP/SL units, but increase the pressure in their discharge pipe by controlled cross section reduction. In this way our WAP/SL/HP wash-presses achieve a solids concentration in excess of 50 % DS. Our entire equipment had to be installed during uninterrupted plant operation. Thanks to the excellent cooperation between the plant’s ope - ration manager (Mr. Wagner), consul - ting engineer (Mr. Schürmann of Arnold Inc.) and HUBER service tech - nician (Mr. Stiegler) this could be done and finished in time. Since then our equipment is operating well and without problems.

Helmut Schmidt Sales Office Southern Bavaria [email protected] Augsburg: Three RakeMax ® multi-rake bar screens in parallel channels Straubing: Grit washer RoSF 4 and discharge from wash drum RoSF 9V

Two RakeMax® multi-rake bar screens for Oman Two Giants on Their Way to the Orient construction. from becoming clogged or damaged ® The Sultanate Oman is a country on by coarse solids. Our RakeMax the Arabic peninsula, south-east of screens are the ideal solution for this the United Arab Emirates, east of challenge because they easily lift the Saudi-Arabia and north-east of largest amount of screenings from Yemen. Its south-eastern coast faces such a great depth. the Arabic Sea and its north-eastern Of course, such huge screens can not coast the Gulf of Oman. Stretched be shipped in one piece. Their frame along the gulf coast is Muskat, the is provided with two flanged conne - capital with a population of 850,000. ctions along its length, so that each Azaiba Two kilometres south of the city, in Al frame is shipped in three pieces. The Ansab, the capital’s wastewater tre - pieces are then reassembled on site These giants RakeMax ® screens are atment plant is under construction. before installation. The photo shows 19.3 m tall 1.25 m wide and have a Its headworks and sludge treatment one of the RakeMax ® screens in our bar spacing of 20 mm. They are the will also be provided with HUBER factory during assembly and before tallest screens we have manufactu - equipment. test-running and disassembled for red and supplied so far. They will be An average flow of 4 m 3/s and a peak shipment. As can be seen, the installed in a wastewater pump sta - flow of 6 m 3/s is pumped to the new screens have a rigid and self-suppor - tion in Muskat, Oman at an angle of plant from a pump station in Azaiba ting frame that does not bend under 75°. They pre-screen wastewater where our giant RakeMax ® screens its own weight, which is a heavy before it is pumped to the largest will be installed. After passing the 5,600 kg. membrane bio-reactor (MBR) plant screens, the wastewater is lifted by The assembly process in the factory worldwide that is presently under 17 m. Our screens protect the pumps has been documented, photogra - phed and described in detail to provi - de excellent assembly instructions for the contractor. This is necessary because these giant screens, due to their size and weight, must be assem - bled and installed on site in a particu - lar way. In the next volume of our HUBER Report we will report about their installation and show some photos thereof.

Peter Brüchner Harald Plank Project Managers in our Business Unit Mechanical Treatment Screen assembly [email protected] Giant RakeMax ® screen on the hook Page 5 Mechanical Treatment Solutions

ROTAMAT ® RoK 2 screen for research project Reducing Pollution from Combined Sewer Overflows of wastewater, infiltration water and plant: only 3 % of the time more than rain water; it contains all kinds of 500 l/s overflow, which is the basis of solids, such as faeces and hygiene the design, but 56 % of the time less articles. While sewage overflows, a than 100 l/s overflow. Overflow dura - substantial portion of this disgusting tions obviously far exceed storm matter is directly dumped into surfa - durations. ce waters. The third diagram shows the freight CSO problems are further exacerba - balance over an entire year. Column ted by the fact that overflowing does 1 is the calculated COD freight ente - not end when the storm is over; espe - ring the sewer system, column 2 is cially in rural areas much water Burbach the measured freight arriving at its keeps infiltrating into the sewers for a WWTP, which is only 61 %. Column 3 long period thus extending overflow shows a moderate remaining freight durations from a few days to even in the plant’s effluent and the overflo - weeks. And it should be noted that Even where a highly efficient central wing freight of column 4 is 8.5 times smaller overflows are less diluted, so wastewater treatment plant (WWTP) larger. It is mind-boggling that the the polluting freight does not subside exists, remains some substantial pol - freight entering the surface water proportionally with the flow. lution of surface water which is often (See column 5) is 43 % of the freight overlooked. The problem is that not The diagrams illustrate how severe entering the sewer system. This cen - all sewage is treated in the WWTP. the CSO problem can actually be. The tralized sewerage system appears to Daily COD freights arriving at a WWTP; average freight into the sewer system is Any WWTP is designed and built for a first diagram shows the incoming be inefficient and a waste of money. 5,000 kg/d COD freight at a WWTP serving a total certain hydraulic capacity, e.g. for 3 It is a fact that the quality of surface population of 50,000 over an entire times the dry weather flow in the US. waters is usually worst after storm year. The COD freight entering the Combined sewer systems carry events, in spite of their dilution by sewer system is over 6,000 kg/d. higher flows during rainstorms. To rain water. And it is also a fact that prevent overloading of downstream However, during most days the freight arriving at the WWTP is much the overflowing freight often far sewers and treatment plants combi - exceeds the freight in the treatment ned sewer overflow (CSO) structures lower. The freight peaks can be explained by sewer flushing and plant’s effluent over the course of an are commonly built within sewer sys - entire year. tems. They discharge any flow excee - mobilization of deposits. ding the downstream capacity limits The second diagram serves to Of course, it would be ideal if we to an adjacent surface water. Sewage explain why a substantial portion of could replace all combined sewer in combined sewer systems is a blend the freight does not arrive at the systems with separate sewer sys - tems, but this is hardly possible where sewer systems are built. The feasible remedy is to reduce over - Classification of overflows at a storm water tank in rural area flows, e.g. by construction of storm water retention tanks, and to remove as much freight as possible from the remaining overflows by fine-scree - ning. We suggested a research project and found a partner in the City of Bur - bach. The project is funded by the German State Nordrhein-Westfalen. Main objective of the project is to monitor and compare the volumes and freights overflowing from two identical storm water tanks having almost the same operational condi - tions. Both tanks were provided with flow metering weirs, but only one of the tanks was also provided with a RoK 2 fine screen upstream of the metering weir. Since September 2006 the system is in operation and data are monitored and analysed. It is too early to publish any results. We are proud that we could make a substantial contribu - tion to this research project by provi - ding our screen and flow meters. We look forward to learn how much freight our screen actually retains. We are certain that it is substantial.

Christian Gelhaus, Product Manager in our Business Unit Mechanical Treatment Sewage flowing through our RoK 2 screen and overflowing our measuring weir [email protected] COD freight balance of the sewer system and WWTP a over the entire year 2000

Automated sewer flushing saves time and costs HUBER Power Flush ® Solution section. While the gate is closed, wastewater collects upstream of the gate. When a certain upstream water level is reached, the gate automati - Hunderdorf cally opens and a water surge rushes through the downstream sewer and flushes it out. The plant operators are very happy with the results. Once per day they The WWTP of the Bavarian town Hun - press a button to close the gate. The dersdorf is presently extended to ser - following water retaining and flus - ve a total population of 5,500. The hing process is fully automated. Sin - main sewer connecting the town to ce the system is in operation, the grit the plant is DN 1,400 and has an ave - arrives at the plant, is removed in its rage slope of only 0.15 %. The avera - grit channel and washed in our ge flow of 35 l/s is much too low for ROTAMAT ® COANDA grit washer RoSF sewer flushing. As a result grit accu - 4. The clean grit is reused as constru - mulated in the sewer and formed ction material. Manual flushing of the heavy deposits. Frequent manual main sewer is no longer needed, so flushing of the sewer was necessary, that the operators save much time which was very laborious and costly. and costs. In 2006 an automated HUBER PowerFlush ® gate was installed to sol - It is so simple: Chief operator Eberth ve this problem. The swivelling flap Helmut Schmidt presses a button to start the daily gate is installed near the up- Sales Office Southern Bavaria ® sewer flushing cycle stream end of the main sewer [email protected] HUBER PowerFlush gate with pneumatic seal Industrial Applications and Solutions Page 6

Wastewater pre-treatment at meat processing plant Industrial HUBER Solution in Ohio, USA consulting engineer date back to consulting engineers in every step 2003. During several visits and mee - during the design phase. tings with HUBER engineers, the pre - In 2004 and 2005, HUBER Technolo - liminary layout for the project was gy Inc. was awarded orders for the developed. complete treatment system. The first During the fall of 2003 we tested one - order included a tank-mounted site a HUBER HDF pilot plant and ROTAMAT ® Ro 2 wedge wire screen achieved the following results: with 1,000 mm diameter and 2 mm ® FOG of up to 600 mg/l, reduced spacing, one dissolved air flotation by over 99% (DAF) system HDF-20 with floccula - ® tion reactor and polymer station, con - Canton TSS of up to 2,000 mg/l, reduced trols integrating all equipment, and by up to 98% spare parts for five years. The DAF is ® BOD of 2,000 mg/l, reduced by capable of handling the average flow 3 40 to 60% of about 170 m /h (750 GPM) and 3 ® peaks of well above 200 m /h (880 DS concentration of the flotate GPM). The second order for a sludge Fresh Mark Inc., an Ohio based meat sludge around 8% dewatering screw press RoS 3 size 2 processing company, was founded in These outstanding results were deci - was awarded in 2005. A second HDF 1920. A strong focus on quality and a sive in convincing the customer to 20 DAF system may be installed in diverse product range from a full line choose HUBER as their supplier. The the future to provide for redundancy. of hams, smoked sausage, wieners, other major factor influencing the The wastewater first enters an equa - ® and deli meats has ensured Fresh customer’s decision was HUBER’s lization tank. From there it is pumped Freshmark: ROTAMAT screw press RoS 3.2 for dewatering of flotate sludge Mark’s continued success. ability to provide a complete system through our tank-mounted Ro 2 solution. In other words, screening, screen. The screened process water City officials in Canton, OH had indi - FOG reduction, sludge dewatering as enters a second equalization tank. It cated that Freshmark’s existing was - well as controls and integration was is then pumped through a tubular flo - tewater treatment system was obso - to be provided by HUBER. Our engi - cculation reactor, where colloidal lete. Our initial discussions with their neers assisted the customer and his suspensions and emulgated oils and fats are destablized, coagulated and flocculated. Next is enters the DAF unit. Floated and settled sludge from the DAF enters a holding tank. The effluent from the DAF is discharged into the public sewer. The sludge is flocculated with polymer and dewa - tered in our RoS 3 screw press. The system installed at Fresh Mark elimi - nated any freight surcharges the cus - tomer had to pay to the local sewer authority and significantly reduced their sludge disposal and transporta - tion costs. In addition our system reduces their chemical and labor costs.

Christian Roedlich, PhD Sales and Marketing Manager of Freshmark: HUBER HDF 20 dissolved air flotation unit with tubular reactor for Huber Technology Inc. (USA) ® chemical pre-treatment [email protected] Freshmark: ROTAMAT wedge wire screen Ro 2 / 1000 / 2 & screw press RoS 3.2

Slaughterhouse for 77,000 pigs per year HUBER Solution for Europe´s Largest Slaughterhouse Ro 2 screens with a wedge wire points along the length of a tubular easy to operate and maintain. Back - fats were easily and instantly attai - spacing of 1 mm, with an reactor with a nominal diameter DN washing of their screen baskets is ned. Our technical solution and pro - additional hot water spray bar for 150. This tubular reactor is designed full-automatic and requires little ject management were so convincing optional hot backwashing and a and dimensioned such that the che - wash water, which is most important that in January 2007 Danish Crown screen basket diameter of 1,000 micals are quickly mixed into a turbu - in this case because the sludge con - ordered another HUBER HDF unit mm. To provide for redundancy lent flow and that sufficient retention tains so much grease and fat. There with chemical pre-treatment and during maintenance work, three time for good flocculation is guaran - are no filter belts that could become 120 m 3/h capacity for their slaughter - (2+1) screens were installed. teed. blocked by grease and fat. The opera - house in Blans. This unit will probably tion costs of our screw presses are Horsens ® Flow 3 with a maximum of 15 l/s An important requirement by our be started up in October 2007. much lower than those of other is collected at the washing client was treatment and disposal of dewatering machines. station for the livestock trucks. the generated flotate sludge. We This flow contains high solids supplied ROTAMAT ® screw presses The slaughterhouse and the waste - Andreas Böhm loads, mainly consisting of hay RoS 3 for sludge dewatering. Main water treatment were started up in Sales Engineer in our Business and saw dust. A pair of advantages of our screw presses are 2005. The results were excellent. The Unit Industrial Applications ROTAMAT ® Ro 9 screw screens that they are entirely enclosed and required limits for COD, BOD, SS and [email protected] with 3 mm perforation and a screen basket diameter of 700 In Europe’s largest and best equip - mm were selected. Downstream ped slaughterhouse in Horsens, Den - of each Ro 9 unit a ROTAMAT ® Ro mark, built and operated by the 2 screen with a wedge wire Danish Crown Company, you can find spacing of 1 mm and a basket not only the latest technology for diameter of 780 mm is installed. slaughtering and meat processing, This tapered screening was but also a HUBER state-of-the-art chosen to combine removal of a wastewater solution with mechanical high solids load by the Ro 9 with and chemical process steps. the excellent capture rate of the Three types of wastewater are colle - Ro 2. cted and pre-treated separately: After passage of the screens, all ® Flow 1 with a maximum of 35 l/s three wastewater flows enter a com - comes from the packaging and mon balancing and storage tank with freezing department. It is a volume of 800 m 3. This tank serves screened with a ROTAMAT ® Ro 2 for reducing hydraulic and freight with a wedge wire spacing of 1 peaks. The combined and equalized mm and a screen basket wastewater is then pumped to three diameter of 780 mm. The main dissolved air flotation (DAF) units task is removal of paper from HUBER HDF-7. Each of the three units wrappings and wood chips from has a capacity of 80 m 3/h. Two of the pallets. units are sufficient to process the ent - ire flow, the third unit serves for ® Flow 2 with a peak of 94 l/s redundancy. arrives from the slaughterhouse and butchery. This flow is more Before the wastewater enters a DAF difficult because it contains fat unit, FeCl 3 is added as coagulant and and grease, meat pieces and polymer as flocculant. Emulgated bristles. Even butcher hooks can fats, blood and colloidal particles are be found therein. A robust and destabilized and flocculated, and can well cleansable screen was thus be removed in the DAF units. needed. We selected ROTAMAT ® The chemicals are added at various Three HUBER dissolved air flotation units HDF-7 with tubular reactors for chemical pre-treatment and sludge storage tank Page 7 Industrial Applications and Solutions

HUBER equipment is internationally used for energy recovery from biomass HUBER Solutions for Renewable Energy Generation standard screening machine for the The biogas generated from bio-waste such new processes and plants. Dis - Kongsberg removal of plastics and other distur - or sewage sludge is commonly used turbing solids and grit are also pre - bing materials from pulped bio-was - for co-generation of power and heat. sent in their raw material and have to te. All their current designs include Some of the heat is used for fermen - be removed. Ieper our product and during the last 15 ter or digester heating, but surplus months we already supplied 7 units heat can be used for thermal drying to this customer alone. Based on this of dewatered product, e.g. in one of Thomas Nagler and ® experience, our Swedish subsidiary our KULT BT dryers. Bernhard Ortwein, HUBER HYDROPRESS received an Currently there is a boom for fuel Sales Engineer / Madrid order for the supply of two STRAIN - from biomass to reduce consumption Sector Manager in our Business Palma de Mallorca PRESS ® units and a grit washer RoSF of mineral oil. Our process and pro - Unit Industrial Applications 3 for another project in Scandinavia. duct solutions are also suitable for [email protected] / [email protected] Various HUBER equipment is in ope - sits on the bottom. Fifteen of our reli - ration at many plants for energy able low-maintenance Ro5-Bio units generation from biomass, such as are in successful operation today. screens, screenings wash-presses, Fermented product is dewatered in complete pre-treatment plants, dis - our RoS 3 screw presses that are, due solved air flotation plants, grit classi - to their robust design, particularly fiers and washers, and even sludge efficient for dewatering of such dryers. fibrous material. High dewatering Our customers know the HUBER engi - efficiency and capture rate in combi - neers as competent, experienced nation with low operation and main - and reliable partners. We do not only tenance costs make our entirely supply efficient and reliable equip - enclosed screw presses very compe - ment, but are also increasingly invol - titive. We recently received the order ved in process engineering; we provi - for a turn-key project near Wiesba - de industrial solutions for their chal - den that includes dewatering of fer - lenges. It is an important advantage mented bio-waste and treatment of that our industrial department can the filtrate. use and bundle expertise of our other departments, e.g. concerning While international projects are usu - mechanical or sludge treatment. ally for design and construction of new plants, German projects often Our mechanical pre-treatment unit require refurnishing and optimization Ro5-Bio has been used for many of existing systems. We often have to years in Germany and other coun - adapt our solutions and equipment to tries at plants for the biological fer - given constraints. At a plant in nor - mentation of solid waste. This unit is thern Germany, for example, we especially adapted for the removal of have replaced equipment of competi - coarse solids and grit from pulped tors at three locations with our super - biological waste. Pre-treatment with ior wash-presses WAP 6. this unit protects the fermenter equipment from clogging and pre - A British engineering company has vents formation of heavy grit depo - selected our STRAINPRESS ® as their Product dewatering in Ieper, Belgium; the enclosed screw presses RoS 3 are connected to a deodorization system

HUBER Screw press RoS 3 replaces vacuum filter Paper Mill in Bulgaria Saves Costs The paper mill of Duropack – Trakia matic operation. Our guarantees for 95 %. their placement of another order for Papier AG in the Bulgarian city of polymer, power and water consump - Based on these values and in compa - their wastewater treatment plant: ® Pazardzik had serious problems to tion and for cake dryness, together rison with the previous operation of two ROTAMAT Ro 2 screens with a dewater the sludge produced from with our competitive price, convinced the vacuum filters, our solution screen basket diameter of 1.2 m and their wastewater treatment plant. For our customer to order HUBER equip - brings operation cost savings of 1 mm wedge wire spacing, and a ® over 30 years they had operated ment. In addition, they had received 56,000 Leva (over 28,000 Euros) per ROTAMAT COANDA grit washer ROS vacuum filters from Russia. They encouraging responses when they year. This figure includes savings of 4 size 1. consumed much water and power, inquired about our reference installa - water, power, transport and disposal, This great success would not have were difficult to operate and main - tions. and also includes polymer costs (the been possible without the excellent tain, achieved only a cake dryness of Commissioning tests over a period of vacuum filters did not use polymer). support by our German colleagues of around 20 %DS, which led to high Not included in these savings is the three days and with two different the Industrial Applications Division. transportation and discharge costs, Pazardzik polymers gave the following results: fact that our equipment needs far and the vacuum filters were about to With the better polymer and a dosa - less labour for operation and mainte - fall apart. The plant’s management ge of 1.63 g/kg we achieved average nance. Petar Dimitrov decided to replace them. cake solids between 39.3 and 46.4 Our customers are extremely happy General Manager of They were looking for equipment that %DS, with an average of 42.5 %DS. about their cost savings and our Huber Technology Bulgaria 93.8 % fine material, 1.4 % coarse can dewater 15 – 35 m 3/h sludge to a The average solids capture rate was equipment’s operation. This lead to GmbH material. much higher dryness. The characte - ristics of the sludge are: 1.5 to 3 % As our solution we offered our screw dried solids, 60 – 65 % thereof orga - press RoS 3 Size 3, complete with all nic (volatile), grinding degree 48 °SR, required ancillary equipment for flo - 4.6 % long fibres, 0.2 % short fibres, cculation with polymer and full-auto -

Before: Old Russian vacuum filter After: HUBER ROTAMAT ® screw press RoS 3 size 3 Industrial Applications and Solutions Page 8

HUBER DAF, units improve potable water quality A HUBER SafeDrink ® Solution in Sri Lanka tion. Then the water is disinfected and formed mud balls that could not uneven distribution is thus prevented with chlorine gas and distributed. The be effectively removed by filter back - and operation is most reliable. problem was that the solids removal washing. Good micro-bubble generation and efficiency of the existing flota - In cooperation with the National even flow pattern, together with inte - tion/filtration combination unit was Water Supply and Drainage Board grated lamella separators providing a so poor, in particular concerning col - (NWSDB) and their consulting engi - loidal particles and algae. Scaling and multiplied surface area for separa - neers of Pöyry GKW we provided a fouling occured in the water distribu - tion, lead to excellent separation of solution for these problems. We tion network. Water from the network the floating matter. The distance bet - supplied two HUBER HDF-15 stainless was turbid and had bad colour, scent ween the lamellae is large enough to steel DAF units, each having 150 prevent clogging. Colloidal particles and taste. 3 m /h capacity. Our separate DAF and algae are effectively removed in Drawbacks of the existing flotation / units replace the flotation portion of our HDF units. The two compact HDF filtration unit were insufficient air the existing combination unit, while units have a capture rate of 90 to 95 saturation of the DAF system, inte - its sand filter portion is further used. gration of flotation and sand filtration %. Average turbidity of their effluent The water saturation system of our is below 5 NTU. After such pre-treat - Ampara in a single tank, and insufficient solids removal efficiency. The exis - HDF units includes a water pump that ment, the existing sand filters are ting saturation system included a simultaneously injects air and mixes able to remove the remaining turbidi - separate pressure vessel and a multi - it intensively with the pressurized ty without any danger of clogging. The drinking water for the city of tude of small pressure release val - water. Air saturation occurs in a tubu - The treated water is clear and con - Ampara and its surrounding area is ves. These small valves were prone lar reactor and a single and large val - tains virtually now solids. ve serves for subsequent and instant taken from a lake. The raw lake water to clogging so that distribution of saturated water was uneven. Micro- pressure release. The generated mil - is screened and treated by alum-lime bubbles were generated instead of ky water, containing invisibly small Ruben Grönnert coagulation/flocculation. Solids were micro-bubbles, and flotation was thus micro-bubbles, is then blended with Sales Engineer in our Business originally removed in a concrete unit insufficient. A considerable portion of the incoming raw water and evenly Unit Industrial Applications combining flotation with sand filtra - the solids settled onto the sand filter distributed. Valve clogging and [email protected] Pre-screening at the intake

Dissolved air flotation unit HUBER HDF-15 Intake structure at the lake

Business Unit Industrial Applications scores points at IFFA HUBER – Professional Partner for Meat Processing Industry technology. We focused our exhibits dewaters the separated flotate slud - wastewater treatment to speak of. the meat processing industry. on wastewater screening, dissolved ge and thus saves hauling and dispo - Many visitors of our IFFA booth came air flotation and flotate sludge dewa - sal costs. from Eastern Europe, Asia and Latin tering, but we also presented advan - Wastewater freights and discharge America. This shows us that our tech - Andreas Böhm ced solutions, such as full-biological costs are significantly reduced by the nology has great potential on these Sales Engineer in our Business wastewater treatment in membrane combination of screening, chemical markets too. In any case, HUBER is a Unit Industrial Applications bio-reactors (MBR). We met many treatment and dissolved air flotation. competent and reliable partner for [email protected] interested visitors and explained our products and processes to them. We A newer and innovative technology is emphasized that quality, tradition the HUBER membrane bio-reactor for and innovation is our company’s gui - biological treatment of industrial ding philosophy. wastewater. Our MBR process is a combination of biological treatment Traditional HUBER products, such as and extremely fine filtration through our ROTAMAT ® Rotary Drum Fine Frankfurt ultra-filtration membranes. The Screen Ro 2 or our ROTAMAT ® Micro effluent has such a high quality that it Strainer Ro 9, are machines that have can be directly discharged into surfa - well proven efficient and reliable for ce waters. many years in thousands of applica - tions. These sturdy screens (e.g. pro - Danish Crown recently awarded vided with 1 mm wedge wire spacing HUBER a contract for the supply of a or 3 mm perforations) reliably remo - complete wastewater treatment ve larger solids from the wastewater. plant at Europe’s biggest slaughter - They reduce the wastewater load and house in Horsens, Denmark (See In the meat processing industry, as in protect downstream equipment and separate report on page 6). We recei - other industries, growing ecological processes. ved this big order because we could awareness and cost pressure are For meat processing factories, after prove our long-term expertise with incentives to consider the benefits of pre-treatment by screening, we often many excellent reference installa - onsite treatment of their entire was - provide a HUBER dissolved air flota - tions. tewater flow or of highly polluted por - tion unit HDF for efficient removal of While meat processors in Western tions thereof. Against this back - fat and grease as well as suspended Europe, North America and Australia ground, the HANS HUBER AG pres - solids. If provided with chemical pre- are focused on upgrading or exten - ented itself at the IFFA 2007 exhibi - treatment, removal of colloidal parti - ding their existing wastewater treat - tion in Frankfurt as one of the global - cles, such as blood, is achieved. ment plants, meat processing plants ly leading suppliers of wastewater Our ROTAMAT ® Screw Press RoS 3 in other regions do not yet have any HUBER booth at the IFFA exhibition in Frankfurt Page 9 Industrial Applications and Solutions

Removal of fat and grease with a HUBER HDF-10 Solution for a Slaughterhouse in Norway The slaughterhouse in Ringsaker, a treatment of the wastewater from the The volume of the flotate is about 1 to town located about 80 km north of butchery. For mechanical pre-treat - 2 % of the wastewater flow, and its Oslo, has a capacity of 1,200 pigs and ment of the wastewater from the ani - concentration is 6 to 8 % DS. 120 cows per day. Its wastewater mal truck washing hall, we supplied a Terje Grinden, the technical manager flow of 5,400 m 3 per week contained tank-mounted ROTAMAT ® micro- of the slaughterhouse’s maintenance Ringsaker about 270 mg/l free fat and grease, strainer Ro 9 with 1 mm wedge wire department is very satisfied with our whish caused severe problems in the spacing and a screen basket diame - equipment and Reidar Larsen, the sewers and at the central wastewater ter of 500 mm. Since only particulate superintendent of the municipal was - treatment plant in Brumunddal. At matter needs to be removed, no addi - tewater treatment plant, confirms the end of 2003 the slaughterhouse tional chemical pre-treatment is nee - that their situation has magnificently management made their decision to ded in this case. Our dissolved air flo - improved since our slaughterhouse pre-treat their wastewater before it is tation unit HUBER HDF-10 efficiently system has been in operation. discharged into the municipal sewer. removes free fat and grease. Our Scandinavian subsidiary HUBER Our solution could easily meet and HYDROPRESS provided the solution exceed the stated removal efficien - Ole Alex Wetten for this challenge. They supplied a cies of 80 % for particulate fat and General Manager of 500 mm wide step screen SSM with grease as well as for total suspended Hydropress Huber AB, Norway 1.5 mm spacing for mechanical pre- solids, and of 30 % for BOD and COD. [email protected]

ROTAMAT ® Ro 9 micro-strainer screening wastewater from lifestock vehicle washing HUBER HDF 10 at the slaughterhouse in Ringsaker, Norway

HUBER Solutions for Food Processing and Paper Mills Solutions for Factories in South America ction also rises. Fortunately this cases solids are reduced by over 90 rate from wastewater and our pres - Europe and other parts of the world. appears to be the case. HUBER LATIN %, oil, fat and grease by over 75 % ses dewater and compact the fibrous They are convinced that we provide AMERICA, based in Santiago de Chile, and COD by over 70 %. After such screenings to solid cakes. suitable high-performance solutions has been and is busy selling solutions pre-treatment the remaining dissol - for their challenges. Our customers selected our systems and equipment to factories in Latin ved pollution in the effluents can well and products because of our pro - America. Here we can only mention a be removed biologically on-site or in found experience in treating such Ieda Manzoli few: central treatment plants. wastewaters, which we gained from Sales Manager in Brazil Feira de Santana We have supplied two dissolved air Other examples are paper mills: We hundreds of reference installations in [email protected] flotation (DAF) plants HUBER HDF supplied one sewer overflow screen ® Arasas with chemical pre-treatment to food RoK 1, one RakeMax multi-rake bar Telêmaco Borba processing factories of the Nestlé screen, two vertical Step Screens ® ® Otacilio Costa city concern in Brazil. These factories pro - SSV , two Step Screens SSF , one belt duce ice cream, yoghurt and soft filter press Bogenpress ®, and a total drinks. And we are presently awaiting of six screw presses RoS 3 to paper the order for a third system. Our DAF mills of the companies Ripasa, Inter - systems remove colloidal solids and national Paper, Klabin and Bahia Pulp emulsified oil and fat, and thus also in Brazil. Our screens remove pulp COD, with excellent efficiency. In all and paper fibres with high capture Economic development in Latin Ame - rican Countries is at a fast clip. As the Economist, an international weekly journal, reported recently (volume August 18th to 24th), average GDP growth since 2004 in the region was 5 % per year, while annual population growth is only only around 1.4%. Fas - ter growth, low inflation, expanding credit and liberal trade are helping to create a new middle class. Unem - ployment, poverty and even income disparity are falling. In spite of popu - lation growth the poverty rate of the entire region fell from 50% in 1990 to below 40 % today. The leading light is Chile whose poverty rate fell below 15%. Rising middle classes consume more goods and services, and gro - wing industries provide the supply, in turn creating more jobs and income. Growing industrial production would have the drawback of increased pol - lution of the environment, unless Tubular reactor for chemical conditioning Dissolved air flotation unit HUBER HDF investment for environmental prote - Sludge Treatment Solutions Page 10

Septage receiving station Ro 3.3 and screw press RoS 3 HUBER SeptageTreat ® Solution in Sweden ment system was installed. The liquid upper end. the level sensor in the buffer tank sludge is pressed through our septa - The thin sludge has a concentration provides a low signal. Operator atten - ge receiving station Ro 3.3 that inclu - Östersund of only around 1 %DS, which is rather tion is minimal. The operators are des a Ro 2 wedge wire screen with 4 low. The sludge cake’s solid concen - also very pleased with the comparati - mm spacing and a screen basket dia - tration is continuously above 30 vely low polymer consumption. Filtra - meter of 1.2 m. It is also provided %DS. The operators even found out te of good quality is discharged into with an integrated IRGA for washing, that they could achieve 37 %DS when the wastewater treatment plant. dewatering and compaction of the they increased the pressure within screenings. The Ro 3.3 unit also inclu - the screw press by adjusting its cone des a grit trap and grit classifier. The at the discharge end. Normal flow to pre-treated sludge is discharged into the screw press is between 7 and 8 Ulf Bengtsson, a storage tank with a volume of 200 m3/h. Our screw press operates fully General Manager of 3 m . automatic after it is switched on. It HUBER HYDROPRESS, Sweden From the storage tank the sludge is shuts down and washes itself when [email protected] Increasing sludge disposal costs in tion. The system was installed during pumped to our screw press RoS 3 size Sweden are the incentive to search spring 2005 and commissioned 2, but first it is blended with polymer for a new solution for septic sludge shortly after. that is prepared in a polymer station. treatment. Commonly septic sludge Flocculation occurs in a flocculation is hauled to large central wastewater Collected septic sludge is hauled in reactor wherefrom the sludge over - treatment plants and processed tanker trucks to the central wastewa - flows into the screw press. The incli - together with their sewage sludge. ter treatment plant of Östersund ned screw press discharges dewate - The restrictions for applying sludge where a separate septic sludge treat - red sludge cake through a chute at its on land are so stringent that most central plants can not meet the requi - rements and have to use more expensive ways of sludge disposal, e.g. drying and incineration. Septic sludge from households, however, is far less contaminated and may usual - ly be applied on land if it is treated separately. The city of Östersund with a popula - tion of about 50.000 is located in nor - thern Sweden. The sewer authority wanted to treat their septic sludge separately. The total sludge volume is around 6000 m 3 per year whereby most of the sludge is hauled from April to November because it would be very difficult to empty septic tanks during harsh winters in northern Swe - den. The authority required removal of debris, grit and gravel from the sludge as well as its dewatering. Last, but not least, they wanted to have a very reliable system that is easy to operate. In 2004 the sewer authority hired consultants to find a solution for separate septic sludge treatment, and they contacted our Swedish sub - sidiary, HUBER HYDROPRESS. We could offer our SeptageTreat ® Solu - Östersund: HUBER RoS 3 screw press for sludge dewatering Östersund: HUBER Ro 3.3 septage receiving station for debris and grit removal

Septage receiving stations RoS 3 and super-lauder wash-presses WAP/SL Well Received Septic Sludge in Finland The town Lahti is located about 60 km ling companies. They wanted to pre - ase. In the WAP/SL batches of scree - reduces the screenings’ mass to to the north-east of the capital Hel - vent that septic sludge is dumped nings and wash water are intensively about 25 %. sinki. The city and its surrounding into sewers or, even worse, on some agitated by an open pump impeller After our complete success in Lahti area have a population of around wasteland. They determined that the that is mounted on the wall of the other Finish cities also selected Lahti 120,000. Only the urban area is con - Ali-Juhakkala plant has sufficient launder tank. After each washing HUBER solutions for their septic slud - nected through sewers to the central capacity to treat the septic sludge. cycle, the wash water containing ge and screenings handling pro - Ali-Juhakkala wastewater treatment However, dumping the septic sludge almost all faecals and most of the blems. plant that is design for a total popula - into their inlet structure was not COD is drained to the plant. The was - tion of 50,000. Septic tanks are com - acceptable because the plant opera - hed screenings, consisting mostly of monly provided in suburban and rural tors had problems with their existing fibrous material, are dewatered and Ari Moisio areas. screenings handling system of their compacted on their way through the Country Manager Finland inlet screens. Municipal authorities were searching unit’s pressure pipe. In comparison to and the Baltic States for a way and place to treat the septic Our proposed HUBER solution could their former piston-press, our WAP/SL [email protected] sludge that is collected by ten hau - kill several birds with on stone. We suggested installation of our septage receiving station ROTAMAT ® RoS 3, which is essentially a tank-mounted Ro 1 fine screen with a bar spacing of 6 mm, to remove debris from the sep - tic sludge. The screenings are was - hed a first time in the screens inte - grated screenings wash system IRGA. A flow meter measures the sludge volume discharged by each hauler and a card reader serves for identification, so that the haulers can be charged properly. We also offered covered Ro 8T screw conveyors for moving the screenings, not only from the septage receiving station, but also from the plant’s inlet screens, to a common super-launder wash-press WAP/SL. This unit reduces the scree - nings’ mass to a minimum by intensi - ve washing and compaction. Since all equipment is enclosed, odour emis - sions are minimized. The city’s staff and consultants were convinced that our proposed solution works best and issued their purchase orders. Our system was installed and com - Lahti: Ro 8T screw conveyors move all screenings to the WAP/SL; visible is the top of missioned, and it works perfectly. Lahti: Septage receiving station RoS 3 with integrated IRGA for screenings was - its launder tank, the impeller motor and the rising pressure pipe; a highly compres - The rugged fine screen Ro 1 of the hing and enclosed Ro 8t screw conveyor forwarding the screenings to wash- sed screenings plug is pushed out of its end septage receiving station remains unaffected by debris, gravel and gre - press WAP/SL Page 11 Sludge Treatment Solutions

On-site incineration of sewage sludge First HUBER sludge2energy ® Solution in Design The HUBER sludge2energy ® system that is similar to those commonly and air flows are switched to the includes our medium-temperature used for biomass combustion. The other vessels. In this way, the peb - belt dryer. Hot dryer air is drawn by hot flue gas flows through a pebble bles are sequentially heated and coo - blowers through the slowly moving heat recuperator that transfers heat led, thereby transferring up to 98 % belts and the sludge layer thereon. to compressed ambient air. The hot of the heat from the flue gas to the The hot dryer air absorbs water and is and compressed air drives a micro atmospheric air. thus cooled. Most of the air is re-cir - gas turbine and a generator. Because The incoming atmospheric air is com - culated and blended with a smaller of direct gas-to-air heat transfer no pressed by the micro-turbine to flow of preheated ambient air. The water-vapour cycle is required. Even Grudziadz around 4 bar and heated to about blended dryer air is then heated to small systems can produce electricity 200 °C. The air is then cooled in a around 130 °C with heat from the with an efficiency of around 30 % and heat exchanger whereby the heat is sludge incinerator before it is drawn well over 50 % of the energy is reco - recovered to pre-heat ambient air through the sludge. Some of the vered through heat exchangers for dryer air is drawn by another blower sludge drying. entering the sludge dryer. Alternati - Landfilling and land application of ® other solid waste, such as vely, some water can be injected and out of the dryer thus keeping the ent - The pebble heat recuperator consists sewage sludge is no longer permitted screenings or bio-waste, can be ire dryer at a slight under-pressure to evaporated, thus cooling the com - in some countries and incineration incinerated together with the of a pair of vessels that are filled with pressed air and increasing the flow. prevent dryer air, odour and vapour pebbles. Hot flue gas and compres - remains the only viable method for sewage sludge, from escaping. This exhaust air is While the compressed air passes sludge disposal. Sludge is commonly sed atmospheric air are blown through the hot pebble recuperator, ® locally generated power sub- cooled in a heat exchanger whereby incinerated in large central plants or, sequentially through the vessels. The it is heated to over 900 °C and stitutes expensively purchased the extracted heat is used for prehe - as an additive, in coal fired power hot flue gas with a temperature bet - expands. Its now much larger volu - power, ating the incoming atmospheric air. stations or in cement kilns. ween 900 and 1000 °C is cooled in metric flow drives the micro-turbine Vapour condenses in the heat one vessel and heats the pebbles. At ® co-generated heat is used on site whereby it expands further while its In cooperation with the ATZ Develop - exchanger and the water is returned the same time, in the other vessel, for sludge drying and pressure drops. The expanded air has ment and Research Centre we offer to the treatment plant. The exhaust the pebbles are cooled and transfer ® now a temperature of about 600 °C another option: small, local sludge wastewater treatment plant air is further cooled and cleaned in a their heat to the compressed atmos - and is further cooled in heat exchan - incinerators. Sludge incineration at operators remain independent of scrubber. pheric air. The air is heated to over gers transferring heat to the sludge the treatment plant provides the fol - large power companies and their The dried sludge has a solids concen - 900 °C. When the temperature diffe - dryer. The still warm air is blown as lowing advantages: price increases for sludge tration of about 90 % and is fed with a rence between the flue gas and the combustion air into the sludge furna - ® sludge transportation is avoided, incineration. screw conveyor into a small furnace air exceeds a certain level, the gas ce. Formation of nitroxides is prevented by staged combustion, flue gas recir - culation and selective non-catalytic reduction. The flue gas, after it has been cooled and screened in the peb - ble recuperator, enters a further gas cleaning system. Acidic gases, such as SO 2 and HCl are neutralized and removed by addition of lime to the exhaust gas. Remaining organic components, such as dioxins and furans, as well as volatile heavy metals are removed through adsorp - tion on activated carbon. Fly ash and other particles are finally removed with filter elements. The elements are made of a special material that is resistant to chemicals and a tempe - rature as high as 350 °C. It is coated with an inorganic material to guaran - tee long life and low flow resistance. The exhaust meets the stringent Ger - man requirements. Together with the ATZ we are pres - ently designing our first slud - ge2energy ® demonstration plant for the Bavarian city Straubing. This first plant will have a capacity to incinera - te 2,200 tons of sludge dried solids per year and will generate 100 kW of electrical power.

Rodolf Bogner Head of our Business Unit Sludge Treatment Process flow diagram of the ATZ-HUBER sludge2energy ® Solution [email protected]

Cost-cutting by sludge drying A HUBER Sludge Solution is about half an hour per day. The operators do not need to move any sludge. The dried product is mechani - cally conveyed into a silo that is emp - tied into tanker trucks. The SRT dryer can be operated with various kinds of energy: water absor - bing capacity of the ambient air, hea - ting of the glass housing by solar radiation, warm air from the blower Rudersberg station and, if necessary, a heat pump cooling the wastewater and heating the dryer air. Depending on the environmental conditions, the combination of these energy sources Last March the town of Rudersberg benefits are combined with economi - is automatically optimized. In this inaugurated and started up their new cal value. way it is possible to dry the sludge to 3 sludge treatment system. 10,000 m Up to 8 m 3/h of liquid sludge is dewa - 90 % all year round, during summer per year of 3 % DS sludge are first tered in our new screw press Q 800. and winter. pressed and then dried to 90 % DS. The sludge cake has an average It should also be emphasized that this This is a mass reduction by 97% to solids concentration of 26 % DS and successful sludge solution was imple - 340 t per year. The dried product has is forwarded by a positive displace - mented in excellent cooperation bet - the same heat value as brown coal ment pump to our solar regenerative ween town representatives, consul - and can be used as additional fuel in dryer SRT where a lateral distribution ting engineer, contractor and HUBER. power plants or cement kilns. The screw spreads the cake evenly over town not only contributes to environ - the dryer’s entire width. Sludge mental protection, but is even able to press, forwarding pump and dryer André Großer, cut wastewater fees. This is an excel - are operated continuously and are Product Manager in our Business lent example for sustainable waste - fully automated. Additional work for Unit Sludge Treatment André Großer explains our technology to interested townspeople during open water management where ecological the operators is thus kept minimal; it [email protected] house day Filtration & ReUse Solutions Page 12

HUBER membrane bio-reactors treat wastewater for reuse HUBER DeSa/R ® Solutions in Indonesia king water. Clean water is becoming and hopelessly overloaded soak- solution for sanitation and water our DeSa/R ® solutions in the huge more and more scarce and expensi - aways and contaminated the ground - challenges. They protect the environ - Indonesian market. ve, which hurts particularly the poor. water. Our three membrane bio-rea - ment and simultaneously help to Since the cities grow faster than their ctor (MBR) systems are now in opera - save valuable freshwater resources Edna Schnell infrastructure, newer dwelling areas tion as pilot and demonstration pro - and to prevent water costs from Project Manager in our are not connected to water or sewer jects. They are not only a solution for rising. These first reference systems subsidiary HUBER Technology water protection, but also for water in Indonesia already led to another networks. Wastewater runs untrea - Asia-Pacific Ltd. ted to the nearest water course and reuse. The fire stations now reuse order. We recently received the order their treated and simultaneously edna.schnell@huber- also contaminates the groundwater. for another VRM ® unit serving a hotel disinfected effluent to fill and wash technology.com Sewers, where they exist, are hope - on the island of Sumatra. Thanks to their fire engines. Bettina Lanz lessly overloaded; they overflow the tireless efforts of our local repre - Project Manager in our Business during rainstorms. Construction of The forth, much larger system was sentative, PT Grahadika Adipurnaja - Unit Filtration & ReUse new sewers in densely populated commissioned in March 2007 and sa, we could successfully introduce [email protected] Sumatra cities is virtually impossible. To cope serves for the treatment of 250 m 3/d with these challenges, the Indonesi - wastewater from office buildings of a Photos in the news showing deluges an government and administration large province´s government. In the and flooding in Indonesia leave the are increasingly interested in decen - past the wastewater was treated in a impression that there is plenty of tralized sanitation and reuse conventional mechanical/biological water in this country. And yet, the (DeSa/R ®) solutions. Last year we plant that became overloaded. Since opposite is true, the country is actual - supplied four HUBER DeSa/R ® sys - this plant is located underneath the ly ridden by severe water shortages. tems to Indonesia, which generated office park, there was no space avai - Clean water is particularly in short much publicity. lable for extension. We supplied our ® supply in Indonesia’s cities. The We supplied three relatively large Vacuum Rotation Membrane VRM country is urbanizing rapidly. Poverty MembraneClearBox ® (MCB) systems unit to upgrade the existing conven - and the hope for a better life is dri - for fire stations that are located in tional plant into a modern MBR sys - ving rural population to move into density populated areas. Each unit tem with the advantage that more fast growing cities with choking has a membrane surface area of 60 than double the flow can be treated infrastructure. Parks and air conditio - m2 and can treat up to 25 m 3/d waste - in the same space. View of the site after flooding ning in posh parts of the cities consu - water. Until last year the fire stations The existing clarifier is no longer nee - me large amounts of precious drin - drained their wastewater to primitive ded and was turned into a storage tank for the effluent wastewater. The biomass concentration in the aera - tion tank and filter chamber of an MBR system is much higher than that in a conventional plant. We also supplied a Ro 9 micro-strai - ner with a 3 mm diameter perforation and a screen basket diameter of 400 mm for pre-treatment of the waste - water before it enters the MBR sys - tem. As with the other projects the clear effluent is reused. In this case it is sufficient for the cooling towers of the air conditioning system and for Samples of raw wastewater, of mixed liquor from the aeration tank and of clear per - irrigation of the office park. meate effluent Difficult work conditions during installation of a HUBER VRM ® unit These pilot projects demonstrate our

HUBER CFSF for post-filtration of wastewater from tanneries HUBER CONTIFLOW ® sand filters in water works New Sand Filter Plant in Italy Two HUBER SafeDrink ® se its capacity because of its excessi - ve backwashing costs. They were loo - Solutions in Europe king for a better system, preferably permitting continuous flow and back - washing, such as our CONTIFLOW ® fil - ters. They wanted to continue to tre - at 50 % of the flow in the existing sand filters and the other 50 % in new Olecko ones. In view of the special wastewater characteristics we suggested to per - The water works of Olecko in Poland thern Sweden has been in operation Montebello Vicentino form pilot tests with our CONTIFLOW ® was started up in May 2006. Its capa - for about a year. Its capacity is 600 sand filter, and the customer agreed. city is 190 m 3/h. Raw water is first m3/h. The plant treats a blend of We ran pilot tests from beginning of groundwater and surface water. Iron March to end of April 2005. To increa - aerated in a trickling tower and some The wastewater treatment plant of cation and denitrification, and sand 4 and manganese in the groundwater se the inflow solids concentration, KMnO is added to oxidize iron and Mentebello Vicentino is designed for filtration. Sand filtration is necessary are removed by a combination of backwash water could be blended manganese. Main objective of the a total population (per freight) of because sludge bulking leads to a subsequent sand filtration is removal aeration and sand filtration. Colour 3 with the feed. We tested several filter 500,000. It treats 15,000 m /d waste - suspended solids concentration in and turbidity of the raw surface water sand qualities to find an optimal com - of the precipitated metal oxides and water from the eponymous town and the effluent of the secondary clari - vary within a wide range, depending promise between removal efficiency reduction of the water’s turbidity. A several other municipalities. A stag - fiers of normally 70 – 100 mg/l that on the season. Both are reduced by and head loss. Analysis of the test special characteristic of this plant is gering 13,000 m 3/d, or 87 %, is was - rises seasonally to 300 mg/l and has addition of aluminium salts. results showed that we could guaran - that the backwash water of the main tewater from tanneries. The munici - peaks of up to 600 mg/l. The limit tee 20 mg/l in the effluent with a feed sand filter is filtered in a second sand In both cases the customers selected pal plant is in reality an industrial specified in the consent standard is ® concentration of 300 mg/l and a filtra - filter. In this way the 5 % wash water our CONTIFLOW sand filters because plant that also treats some domestic 35 mg/l. The existing conventional tion velocity of 8 m/h. We offered for ratio from the first filter is reduced to of their continuous and easy opera - sewage. The plant includes the pro - sand filters, supplied by Sernagiotto, a feed of 300 m 3/h five stainless steel only 1 % by the second filter while the tion and their low maintenance costs. cess steps of mechanical pre-treat - are overloaded and their effluent far CFSF 72 units. After a long delay we balance is clear filtrate. The plants Installation and start-up were done ment, primary sedimentation, an exceeds this limit. The plant owners finally received the order for supply efficiency is thus improved. Of cour - without problems and within the activated sludge process with nitrifi - and operators did not want to increa - and turn-key installation in October se, the second filter also serves for scheduled time frames. 2006. redundancy. And in case that the plant’s capacity is to become increa - We began installation of our filtration Wolfgang Fischer, sed, both sand filters can be operated system in January and after only a Project Manager in our Business in parallel. few months it was commissioned in Unit Filtration & ReUse March 2007. Commissioning tests The new water works of Kumla in sou - [email protected] proved average reduction of suspen - ded solids from 305 mg/l to an avera - ge of 18 mg/l suspended solids with a 300 m 3/h flow. This means that our system easily complies with the 35 mg/l limit of the consent standard. Our customers are very happy with our filters simple operation and excellent performance; they are presently considering replacing their old filters with another unit of five CONTIFLOW ® filters.

Horst Schnarf General Manager of Huber Technology G.m.b.H., Italy Five CONTIFLOW ® sand filters installed in Montebello Vicentino [email protected] Olecko, Poland: Top view of our CONTIFLOW ® sand filter Page 13 Filtration & ReUse Solutions

HUBER MembraneClearBox ® entering the US market ClearOnSite ® Solutions for Western Washington State important economic factors to this failing on-site systems in the Puget several months at their facility and it region. Much of the Puget Sound Sound area. Instead of temporary is meeting or exceeding their expe - region has shallow or otherwise unsu - repairs of failing drain fields, on-site ctations. The District has received a itable soil, high groundwater tables systems are converted to small MBR permit for installation of a pilot unit and frequent rainfall. To develop systems and the pollution problem is on a commercial property in order to many sought-after shoreline proper - solved. The treated effluent can be observe its performance in practice. ties with unobstructed views, many safely used for non-potable applica - The installation is closely watched by lots were created small and missha - tions such as landscape irrigation or the local Health Department who pen, with their long axis running even toilet flushing and valuable have jurisdiction for permitting onsite Washington State downhill to the shore. While most of groundwater can be preserved. After sewerage systems up to a flow of the urbanized areas are served by visiting the HUBER factory as well as 3,500 gallons per day (13.2 m3/d). public sewers, on-site or semi-centra - several MCB installations in Bavaria Due to the enormous interest in the lized treatment dominates in rural during October 2006, the District pur - HUBER MCB, the District has purcha - and suburban areas. All sewage is sed another MCB for use as a hands- chased one of the first MCB systems processed using individual or cluste - on demonstration unit. HUBER USA in the United States as a demonstra - red treatment systems with sub-soil and the District are closely coopera - tion unit. The MCB unit was installed effluent disposal. Direct discharge to ting to get the MCB officially appro - in an off-the-shelf 1,500 gallon (5,700 marine waters or tributaries is gene - ved for use in the State of Washing - liter) fiberglass tank with an internal In Washington State, 30% or 1 million the US are facing construction mora - rally prohibited. Effluents from such ton. baffle wall. The wastewater treat - households are not connected to toriums until the wastewater problem sub-soil drain fields were identified as ment staff affectionately named it sewers. Septic tanks and subsurface can be solved. With our HUBER Mem - the most significant man-made con - the “Pickle” (cucumber) project – drain fields are used for decentrali - braneClearBox ® (MCB) we now offer tributor to eutrophication and oxygen Sandra Schuler, after the shape and color of the tank zed wastewater treatment instead. developers and homeowners a sim - depletion of this region’s surface Project Engineer at used for the MCB installation. The The US Environmental Protection ple solution for their problem. waters. Huber Technology Inc. (USA) staff has been testing the unit for Agency (EPA) estimates that approxi - [email protected] mately 10 to 20% of onsite systems are failing, threatening public health Background A Sewer District and its New Satellite Management Program and polluting the environment. Con - Puget Sound is the nation’s 2nd lar - necting these houses to central sys - gest estuary with thousands of miles The Karcher Creek Sewer District pro - tems is often not a feasible option. of saltwater and freshwater shoreli - vides wastewater collection and tre - Rural developments in many areas of ne. Shellfish industry and tourism are atment to an urban area adjacent to the City of Port Orchard. In addition to centralized wastewater collection and treatment, the District is institu - ting a Satellite Services Management program for owning and/or operating small decentralized wastewater sys - tems outside of its corporate bounda - ries. In HUBER membrane bioreactor (MBR) technology the District recog - nizes an effective tool to solve many rural wastewater problems. The dis - trict is working with the County and Health District to develop solutions for failing decentralized systems in and around Hood Canal and plans to assume responsibility for proper ope - ration and maintenance.

The “Pickle” Project Installation of HUBER MembraneCle - arBox ® (MCB) units has been recogni - zed by the District as the most cost- Installation of the MCB in a 1,500 gallon (5,700 Liter) fiberglass tank with baffle Training of Karcher Creek Sewer District staff by HUBER USA effective solution for thousands of wall

VRM ® unit for Training Centre for Membrane Technology in Seelscheid HUBER Provides Membrane Technology for Training Centre ry of membrane technology and train support the first central training cen - its operation in practice. During tre for membrane technology in Ger - three-day workshops participants are many. The teachers are renowned tought the following subjects: specialists and experts of membrane ® Basic principles of membrane technology. The participants learn filtration various methods how to operate ® Operational features membrane plants, to evaluate their performance, recognize critical pro - ® Terms and data cess conditions and perform trouble ® Membrane cleaning and shooting. Membrane technology is on maintenance the rise – and we should all prepare! Seelscheid ® Process control ® Lab testing and analysis Further information is provided at www.simas.de. HUBER supplied a Vacuum Rotation Membrane VRM ® unit size 20/60 with Karsten Schulze 180 m 2 membrane surface. Ancillary mechanical and control equipment Project Manager in our Business (incl. installation and start-up) were Unit Filtration & ReUse Membrane bio-reactors (MBR) are also provided by HUBER. [email protected] SIMAS: VRM ® 20/60 after installation one of the most innovative and 3 advanced technologies for municipal Approximately 2.5 m /h screened and industrial wastewater treatment. wastewater flow directly into the Since the late 1990s many MBR membrane reactor where it is aera - plants were built and installed in ted with fine bubble diffusers and bio - Europe and North America. This tech - logically treated. The reactor is nology is now increasingly used in dimensioned for a sludge load of other regions too. Membrane filters below 0.1 kg BOD per kg activated simultaneously replace secondary sludge solids. clarifiers, sand filters and disinfection A permeate pump removes biologi - systems. cally treated effluent from the rea - ctor by drawing it with a low vacuum The Schulungsinstitut für Membran - ® technik Seelscheid e.V. (SIMAS), a through the VRM membranes. The training centre for membrane tech - effluent is forwarded to a conventio - nology in Germany, provides educa - nal activated sludge plant because, tion, training and qualification for for safety reasons, SIMAS has no per - professionals who are designing, mit for direct discharge. installing and operating membrane The quality of the treated wastewater filtration systems. SIMAS is funded by meets EU bathing water standards, it the German State of North Rhine- contains no bacteria and virtually no Westphalia. germs and viruses. SIMAS´ objective is to teach the theo - We are glad about the opportunity to SIMAS: VRM ® 20/60 during operation Filtration & ReUse Solutions Page 14

HUBER MCB ® units for semi-centralized treatment and reuse HUBER supports a private aid project First HUBER ClearNear ® Solutions for Boy Scouts Help Children in Cyprus Indonesia Cyprus (EU member since May 2004) ment for re-using the effluent. Howe - se Division suggested donation of a is a semi-arid country and freshwater ver, since the plant was located MembraneClearBox ® unit for waste - is scarce. At the same time, tourism under the parking lot, the space was water treatment at a small school - plays an important role in the econo - very limited and our suggestion was house or orphanage where the trea - my (contributes 7,7 % to GPD and to install a HUBER membrane bio- ted wastewater can be reused for irri - employs 9,8 % of the workforce). For reactor (MBR) plant using only the gation of a fruit or vegetable garden. the above two reasons, the policy of existing concrete structures. Finally Together with the boy scouts we sele - the local government is water conser - we received an order for the design, cted Indonesia as our target country. vation and protection of all tourist engineering, supply, installation, From HUBER Singapore’s dedicated attractions including of course the start-up and maintenance of a marketing and sales activities we ® coast line. HUBER MembraneClearBox plant. know that our membrane technology The aeration tank that had been built Jakarta is needed in this country. We know We recently received our first two that our local representative, Indra ® was used as a balancing tank, while orders for ClearNear solutions in the gravity secondary clarifier was Every year the boy scouts of Spalt, a Djunaedi, will take care of the neces - Cyprus. The first project, located in used as the membrane tank. Perme - Bavarian town, provide Santa Claus sary service and maintenance so that 3 Meneou-Larnaca, where 17 m /d of Cyprus ate pumps draw from the membrane services for a pledge. From their cha - the project will be a success and wastewater from 80 inhabitants of tank clear effluent through the mem - ritable work before last Christmas improve the quality of children’s the luxury Medview Beach Villas had branes. All biomass and all bacteria they had revenues of 1,500 Euros. lives. The remainder of the project’s to be treated (client: Iacovou Bros For the first case, our company had are retained on the membrane’s sur - They want to use this money for a cost will be carried by our Filtration & Development Ltd), and the second originally received the order for the face and the disinfected effluent is good cause. ReUse Division. project located in Latsi – Pafos, whe - construction of a conventional secon - diverted to a clean water storage We are very proud that the boy In cooperation with the governor of re 15 m 3/d of wastewater from 70 dary sewage treatment plant. Just tank for reuse for irrigation. Surplus scouts approached us. They were Jakarta we are presently looking for a inhabitants of apartment houses after the completion of the constru - biomass is returned to the primary impressed by our activities and our suitable application. Unfortunately located very near the beach had to ction of the concrete structures, clarifier and the excess sludge is award of the German Environment our search was delayed by recent be also treated (client: Leonidas client decided to consider the option removed from time to time, as septic Prize. They wanted to donate their natural disasters in Indonesia. We will Georgiou & Co.). to upgrade the plant to tertiary treat - sludge. money to fund a beneficial water pro - report in our next International For the second case, our company ject in an emerging country. HUBER Report about our progress. received an order for a HUBER Mem - During consultation we found out braneClearBox ® plant which was that the boy scouts would not want to Bettina Lanz, again constructed below the parking bury their money in a large and Project Manager in our Business lot of the complex. expensive project. Their project Unit Filtration & ReUse In both cases, our compact Membra - should be small. Our Filtration & ReU - [email protected] neClearBox ® units simultaneously ful - fill three functions: solid/liquid sepa - ration, filtration and disinfection. The existing plant’s capacity - if needed – can be easily increased by increasing the biomass concentration in the aeration tanks. It should be noted, that our MBR sys - tems provide not only excellent ClearNear ® solutions for upgrading and effluent reuse of existing plants but they also permit construction of far more compact and efficient new plants. We expect that our reference plants in Cyprus will not only open the market in Cyprus but also in other countries with similar climatic condi - tions and water scarcity.

Marios G. Poufos General Manager of C.P. Envirosystems Ltd, Cyprus HUBER MembraneClearBox ® units in the aeration tank [email protected] Proud boy scouts handing over their giant check to Hans Huber

HUBER BioMem ® plant for the Iranian Oil Ministry ClearOnSite ® Solution for Office Buildings in Teheran HUBER ClearOnSite ® system was aeration tank and a filtration tank. tank and is reused for irrigation of the Because of our system’s excellent recently installed at the NIOC head Therein the wastewater is biological - office park. performance and its easy and reliable office where are also located the offi - ly treated and the biomass aerobical - Our scope of supply also included all operation the NIOC intends to replace ces of the Iranian Oil Ministry. some more of their decentralized ly is simultaneously stabilized to per - required ancillary equipment, such The entire wastewater from the office plants with HUBER BioMem ® systems. mit reuse of the surplus sludge for as pumps and blowers and the con - complex is collected in a wastewater land application. And soil improve - trol panel. The plant was started up in Teheran sump. From there it is pumped ment. The effluent is drawn by a through a Ro 5 complete plant, inclu - May 2006; chemical flushing was Ms. Mehrabi pump from the filtration tank through ding a Ro 9 micro-strainer with 3 mm done only once during the first year Iran Arae Manager our Vacuum Rotation Membrane perforation, an aerated grit channel of operation. [email protected] VRM ® filter. The effluent is clean, cle - The National Iran Oil Company (NIOC) and a grease chamber. The removed ar and disinfected, has bathing water Design and operation data are as has several offices in Teheran where - grease is pumped into the dewate - of several are not connected to the ring and compaction auger of the Ro quality. It is collected in a storage follows: central sewer system. Many of their 9 and thus blended with the scree - 3 conventional decentralized wastewa - nings. After pre-treatment in our Ro 5 Design flow 120m /d unit the wastewater flows into a buf - ter treatment plants are overloaded Design BOD freight 72.5 kg/d and run down, cause odour and viola - fer tank that had originally been the te their consent standards. They aeration tank of the old plant. From Total aerated tank volume 60 m 3 need upgrading, but space limita - the buffer tank the wastewater is tions make this often impossible. To continuously pumped to our new Bio - Mixed liquor concentration 8 to 14 g/l ® 3 overcome these constraints, a Mem system, comprised of a 51 m Minimum Temperature 15 °C

Aerobic Sludge Age ≥ 20 d

Membrane area 360 m 2

Average design flux 15.5 l/(m 2*h)

Peak flux 30 l/m 2/h

Operating permeability 200 to 250 l/(m 2*h*bar)

Scouring air flow 120 m 3/h at 0.25 bar

Aeration air flow 250 m 3/h at 0.125 bar

COD removal from 632 to 12 mg/l

BOD removal from 290 to 6 mg/l

Total coliforms in effluent < 13 MPN/100 ml NIOC: ROTAMAT ® complete plant Faecal coliforms in effluent < 5 MPN/100 ml Permeate pump, aeration blower and scouring blower Ro 5 Page 15 HUBER International

A book by Fred Pearce: Reads like a mystery, but is reality When rivers run dry The latest book by the environmental her this or that project, or type of pro - journalist Fred Pearce about global ject, such as the building of a dam, is Water consumption in litres per kg in various countries freshwater resources is an appeal to useful. Instead, such projects are to USA China India Russia Italy Netherlands World Average every one of us. be understood as part of the complex and lively system “nature and man”. “We should swim with the flow before the rivers dry up” – this is the conclu - Pearce always begins with a concrete Wheat 849 690 1654 2375 2421 619 1334 ding sentence of the unsettling, alar - example, like that of the Indian far - ming and indeed scary book of Fred mer Suresch Ponnusami dwelling Soya 1869 2617 4124 3933 1506 1789 Pearce. The book could have many south of Tirupur who – like his neigh - Rice (peeled) 1275 1321 2850 2401 1679 2291 titles, but its title is plain: “When the bours – can not continue his farming, rivers run dry”. This phenomenon is but instead sells groundwater that he Rice (unpeeled) 1656 1716 3702 3118 2180 2975 the book’s leitmotiv – throughout its still finds beneath his fields, drilling a ten chapters the author makes the deeper and deeper well every year. Eggs 1510 3550 7531 4919 1389 1404 3340 Then the author follows the way of readers aware of the consequences. Chicken Meat 2389 3652 7736 5763 2198 2222 3918 Not only small and unknown rivers, this water. First it is driven in tanker like the Stour that once ran through trucks to nearby textile mills, where it Pork 3946 2211 4397 6947 6377 3790 4856 the authors hometown, but even the is used for dyeing, and then – which mightiest rivers on our planet are is really handy – discharged into the Beef 13193 12560 16482 21028 21167 11681 15497 dried riverbeds serving as sewers affected: Colorado, Yangtze, Indus, Milk 695 1000 1369 1345 861 641 990 Ganges, Nile and all the others, who - before it finally contaminates the se names are known to everybody groundwater. Or he tells about irriga - Cheese 3457 4963 6793 6671 4278 3190 4914 and whose size is maintained by all tion systems; originally no one could cartographers around the world, expect the damage they caused. Cotton / Linnen 5733 3210 18694 8242 belying the facts. Once there was a Indeed, the artificial irrigation by Coffee (roasted) 5790 7488 14500 20682 River Grande – the Mexicans could damming and deviation of the river say for many months per year. It runs Indus had also some benefits: It fed Tea 11110 7002 3002 9205 dry the first time near El Paso, where and clothed millions of people in it reaches the Mexican border, and Pakistan, but today, after a few deca - tional agenda for quite some time. themselves with ever bigger projects, kilogram of potatoes in such arid often does not even reach its mouth des, there is the threat of famines Treaties about water distribution whereby their main goal is provisio - countries requires about 1,000 litres at the Gulf of Mexico. And this is only due to such systems. The land is gra - rights have been negotiated since ning of their cities, too many engi - of water, while there are countries one example arbitrarily selected from dually turning into a salt desert: eve - the second third of the 20 th century. neers believe in unstoppable pro - where it needs only 500 litres of many. ry year 40,000 hectares of farmland Nowadays they gained some impor - gress and only ask: What is feasible? are abandoned, a tenth of its area is water and this is supplied naturally as Pearce searched for reasons and con - tance in the relationship between the As technocrats some engineers already lost; who can, is digging rain. A kilogram of bananas, a tropi - sequences in a wide breadth. He loo - USA and Mexico. understand nature and environment cal fruit, requires about 6,500 litres of ked into the wider socio-cultural rela - wells, a sometimes deadly self-help Pearce, the leading journalist of the as a mechanism that can be changed water if it is grown in desert planta - tionships of these problems and has endeavour since the water is enri - New Scientist Magazine, has taken at will; and if a first operation proves tions. Do we need to travel to Spain described them in a more graphic, ched with natural minerals in harmful stock of our global freshwater reser - to be unsuitable, they can try anot - for golf playing, where we enjoy plea - captivating and warning way than concentrations; parts of the popula - ve management; he disclosed names her. History, whose course Pearce sant fountains and green lawn, while could ever be done in a scientific tion suffer from fluoride poisoning (in and addresses of unknown persons; repeatedly outlines, teaches us the textbook. One topic of the book are Pakistan) – or from even deadlier the surrounding land is becoming a he cited scientists, well-known politi - certainty: We can do many things, river dams built for land irrigation in arsenic poisoning (in India along the desert because of water scarcity? cians and representatives of impor - but their benefits are all too often of hottest deserts, where most water river Ganges). And a big portion of The (former) Spanish government tant institutions, such as the United limited duration and their long-term consuming plants are grown, such as the population living on once fertile had planned to divert the river Ebro Nations, World Bank, World Health harm to nature and man are often cotton, rice or bananas, that are land near the mound of the river to the south of Spain – this decision Organisation, World Wildlife Fund lasting and devastating. grown for export, for us. At the same Indus, with its mangrove swamps, would have resulted in landscape and many other smaller organisa - time these dams are destroying the has already moved into the slums of The book has 324 pages and almost devastation of the entire region along tions; he is sober, factual and balan - livelihood of people living downstre - Karachi. The social problems are tre - every one could make one or several its present course. ced; he turned an unbelievable abun - am and bring them in deadly danger mendous not only here, but also in headlines, but in view of the facts dance of scientific statistics and We all need to find a way how we can of drowning when a dam breaks, cat - northern Mexico, in the southern they would appear vulgar and lead to live and act in harmony with nature – astrophes that occurred ever more parts of the USA or in China. results into a clear – even shocking – a dead end. The author does not want panorama; he also gives reference to we do not need to forgo much – and frequently during the last years. Nearly no one is searching for solu - to write headlines, he does not want other points of view; and he identifies therewith generate public aware - Another topic is the decreasing soil tions, and if someone does, then only to arouse transient compassion with his personal opinion and uncertain - ness. Not nations act, but we, who fertility and increasing desertification at places where it is unavoidable. The privation and misery of others, which ties as such. He rarely uses extreme of artificially irrigated areas by the military conflicts in Kashmir between obviously excites in blessed people of form the nation. If we do not coopera - words like “tragic” or “insane” and mineral salts that are carried in the Pakistan and India, after all two the rich world the pleasant sentiment te with Mother Nature, we will face only sparsely verbs like “we should” river water and the grave health risks nuclear powers, are about control of of social consciousness. Pearce huge immigration pressure due to or “we must”, though they would for their population. A further topic contributories of the river Indus. That wants to awake awareness of the freshwater scarcity, an entirely new often suggest themselves. Pearce are decreasing groundwater levels future wars will be fought about general public, which is most impor - problem. expounds the problems, but he does and freshwater resources in aquifers water resources, as one can read tant because decisions of politicians not politicize. On the other hand he (these are underground freshwater ever more often, is by no means pro - are guided by public opinion, by has the courage – his English natio - resources that were formed during phesy but already sad reality, though public awareness. Pearce’s book con - Manuela Jahrmärker nality proves to be a true advantage prehistoric periods of wet climate; fortunately, so far, only on a minor cerns everyone – even us, in particu - here – to name the enormous injusti - some of them are now beneath scale. It is even history: Sharon men - lar us. Do we really need to wear the deserts and can not be replenished). tioned in his memoirs that the seven- ce that Israel does the Palestinians. cheapest clothes made of cotton that Fred Pearce, Other chapters deal with the syste - day-war of 1967 was inevitable to Besides such political problems, he was grown under huge consumption “When rivers run dry” matic draining of ecologically impor - safeguard water resources beyond also illustrates the calamitous inter - of freshwater? Do we need to buy Paperback edition (2007) tant wetlands, the increase of mega- Israel’s border. Water distribution play of politics and engineering. Whi - potatoes and bananas from countries Beacon Press, Boston, USA projects for the diversion of rivers challenges have been on the interna - le some politicians desire to adorn with water shortage? Production of a 324 pages, $ 16.00 and river dam construction and with the stubbornness of decision makers in spite of their proven harm. One may scientifically question and correct one or the other figure; one may criticize, with reason, that quan - tities are provided, but nowhere their basis and methods of calculation, e.g. how the author derived the water consumption volumes per mass of food production. Did the author take the entire water cycle into account, that some of the evaporated water returns as rain or dew if it precipita - tes nearby? However, in view of the multitude and gravity of the illustra - ted problems, such objections are marginal: It would be as if we insisted to know exactly how high the wave of a tsunami was that killed thousands of people, whether its height was 6 or 8 or 10 meters. What so far sounds like a dry text - book about water scarcity or, the other extreme, its damaging and often deadly abundance, deals in truth with nothing more or less than sufficient supply of freshwater and food for the world population, and with the chance for peaceful cohabi - tation of peoples and nations. Pearce is able to show this by means of his narrative strategy: He tells about his voyages, lets the reader participate in his own research on site, involving all stakeholders, the active as well as the passive ones. This strategy makes good sense: In this way he avoids the one sided question whet - HUBER International Page 16

HUBER ReUse Concept: Sustainable resource management by recycling of water, nutrients and energy We close the loops Developed in industrializing coun - quate. Longevity of its infrastructure, take thereby centre stage. Adapted management of industrialized coun - water from the wastewater genera - tries 100 to 150 years ago and impro - long lockup of capital, waste of drin - concepts and solutions, adapted to tries is still conceived as state-of-the ted by our employees by means of ved ever since, centralized systems king water for flushing and conveying local conditions and constraints as art. Successful export of DeSa/R ® innovative technologies in our “Reco - for water supply and wastewater of faecal matter, energy consuming well as to the needs of the local popu - solutions is only feasible if we have very Plant”. With our “ReUse Park” management have become the nutrient removal and, last but not lation, which guarantee orderly was - reference installations at home and we demonstrate various possibilities norm. We call this an “end of pipe” least, pollution of surface waters with tewater treatment, must be develo - gain experience with their operation. for reuse of treated wastewater and solution for wastewater manage - micro-pollutants are only some rea - ped, tested and implemented. Gene - This is the reason why HANS HUBER its components, such as irrigation ment. It is a matter of fact that sewa - sons why conventional sanitary sys - rally, decentralized and resource- AG invests in several research and and fertilization of fruit and vegetable ge collection and central treatment tems are increasingly criticized. In saving solutions must be preferred; demonstration projects that we con - plants, and feeding a fish pond with have been a success in view of its ori - addition, because of its high con - solutions permitting sustainable duct either in cooperation with uni - treated effluent. ginal objectives to reduce the sprea - sumption of construction materials, development by consequent recy - versities or alone. It is our objective ding of wastewater borne diseases energy and freshwater, our flush cling and integrated management of to promote public acceptance of In this context, wastewater becomes and to solve the water pollution pro - canalization can hardly be a model resources. These innovative sanitary innovative system solutions and, a “secondary raw material”, raw blems. Centralized sanitation is high - for arid or semi-arid regions. concepts are often called Decentrali - finally, to improve our chances to material for the production of service ® ly recognized all over the world and is To permit sustainable development, sed Sanitation and Reuse (DeSa/R ) export our own technologies, by water of various quality, for produ - viewed, particularly in developing innovative sanitary systems are nee - concepts. transfer of know-how and participati - ction of phosphorus and nitrogen countries, as a status symbol for ded; systems that simultaneously Implementation of alternative and ve processes. and, last but not least, for power wealth and lifestyle. achieve the economical, ecological innovative sanitary concepts in deve - Our approach is multifaceted. For and/or heat generation. A fundamen - In respect to sustainability, however, and social objectives of sustainable loping and emerging countries is arid or semi-arid regions, such as tal paradigm shift, turning our tradi - our centralized system for wastewa - water management. Recycling and often impeded or even inhibited by Algeria, it is obvious to reuse partially tional way of thinking on its head, is ter management is no longer ade - integrated resource management the fact that traditional wastewater treated wastewater for park irriga - happening: The era of wastewater tion. Suitable treatment systems are discharge is ending - a new era of compact, easy-to-operate and cost- wastewater reuse has dawned. effective combinations of solid/liquid Due to the wide range of DeSa/R ® separation and subsequent disinfe - solutions, interesting markets open ction. Freshwater consumption in households can be reduced by use of up for manufacturers, suppliers and high-quality service water for toilet consulting engineers. Great demand flushing, laundry washing and irriga - for holistic, innovative and decentra - tion. Big and rapidly growing cities, lized solutions is expected particular - like Beijing and Shanghai, need was - ly in emerging and developing coun - tewater or grey water recycling. An tries where no widespread infrastru - immense challenge is water supply cture has been built. But only those and sanitation for mega-cities like exporters will be successful who have Lima. A promising approach is the the opportunity to test and demon - common digestion of wastewater strate these technologies in their compounds and kitchen waste for home countries. This is the reason biogas generation. why HANS HUBER AG invests in seve - Early in 2006 we implemented our ral research and demonstration pro - basic ecological recycling concept, jects and tests new technologies. the “ReUse Concept”, at our head - Thereby we conquer new markets quarters in Berching. Our integrated worldwide. water and wastewater concept for our new office building is based on separate collection and specific treat - Stefania Paris ment of different wastewater flows. It Manager of our Research and is our objective to recover a maxi - Development Department Sustainable resource management means closing of loops mum amount of nutrients and service [email protected]

Closing local water, material and energy cycles Globally active – at home in Bavaria HUBER ReUse Concept We Continue to Grow – Within the HUBER ReUse Concept service water, nutrients for agricultu - human consumption. Wastewater is yellow water (undiluted urine) and re, and energy. no longer considered waste material, Extension of our Head Office brown water (faeces and toilet flush but secondary raw material for reco - The objectives of the HUBER ReUse and bright perspectives of the HANS water) are separately collected via very of service water, fertilizer and Concept are to close water, material HUBER AG. We are grateful for their waterless urinals and NoMix toilets. energy. encouragement and will continue to and energy loops locally and contri - Grey water (cleaning and wash grow through innovation and custo - bute in this way to sustainable water) is conveyed via a separate mer satisfaction. line. Innovative HUBER technologies resource management. The treated Stefania Paris are available for treatment of the wastewater and nutrients are reused Manager of our Research and Berching From our home in Berching, where separate flows. These systems are in the company’s own park where Development Department our large factory and engineering operated with the aim to provide safe crops and fruits are produced for [email protected] staff is located, we also coordinate and administrate our global marke - ting and sales activities. Here is also In 2003 we moved into our new head the core of our research and develop - office building in Berching. However, ment. On the other hand, our global due to our continuing growth, our presence is also growing and we are new office building became already adding staff and office space in many too small after only a few years. Now regions worldwide. And we are for - we are investing around 1.5 million ming new partnerships with local dis - Euros in its extension and add anot - 2 tributors and representatives. We her 600 m of office space. know how important it is for our On March 21, 2007 the ground brea - clients that we are close and provide king ceremony for the extension took global and local customer services. place. We are honoured that two Our export ratio has reached around Bavarian State Ministers, Edmund 70 %; many of our products are glo - Huber of the Department of Economi - bal market leaders. We are at home cal Development and Werner in Bavaria, but we are active worldwi - Schnappauf of the Department of de. Environmental Protection, attended and pushed a tandem-spade (made by HUBER) into the ground. In their Bernhard Schmid subsequent statements the ministers Marketing Department, praised the continuous development [email protected]

Two Bavarian State ministers cooperating to break the ground and the Huber brothers Hans Georg (left) and Karl-Josef (right) watching Page 17 HUBER International

Our advertising campaign in ARAB WATER WORLD, WATER 21 and WORLD WATER HUBER SOLUTIONS for Global Water Challenges HUBER International Page 18

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