Huber Report International
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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.