Municipal Sewage Pumping Stations “ 2-Nd German Edition Publisher: D

International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Good morning. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen Microbially induced corrosion in sewage systems … International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

… what can we do in practice?“ International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

The referees Dipl.-Ing. Dieter Weismann

• Consulting engineer • Expert for sewage transport, odor and mikrobially induced corrosion (MIC) • Head of GECO Germany Assoziation Gera/Germany • Author of expert books

Dr. rer. nat Jan Kuever

• Head of the Department of Microbiology of the Bremen Institute for Materials Testing Bremen/Germany • Expert of mikrobially induced corrosion (MIC) • Author of many scientific publications International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Expert books (German)

„Sulfide - practical manual of wastewater technology Biogenic corrosion, odor, risk prevention and cost control “ Publisher: D. Weismann und M. Lohse 2007, 733 pages, several Co-authors

„Municipal sewage pumping stations “ 2-nd German edition Publisher: D. Weismann und T. Gutzeit 2006, 509 pages International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

awa.consult - our engineering scope:

» Forecasts for gravity and pumping systems » Comparison of avoidance strategies against odor and biogenic corrosion » Forecasts of costs » Planning of all sewage pumping processes (pneumatic, hydraulic or mixed) » Opinions about problems and solutions International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

MPA - our scientific and service scope:

Material oriented microbiology

• Isolation and identification of molds, bacteria, archaea, algae, etc. • Detection, analysis and interdisciplinary evaluation of microbially induced (influenced) corrosion (MIC) of materials • Expert advice and investigations of indoor mold contamination according to BIA 9420 • Microbiological testing of materials, substances and applications according to established international test standards • Adaptation of tests to investigate specific problems and new microbiological test development • Research projects

The MPA Bremen is a laboratory accredited by the DAkkS German Accreditation System for Testing. The »XXXX accreditation is valid for the testing procedures listed in the certificate. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Expert assoziation for odor and MIC:

www.geco-dialog.de International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Our members:

» global players, * f.e. a producer of concrete, DYCHERHOFF AG * f.e. a producer of sewage pumps, KSB AG… » small companies, * f.e. a producer solutions against odor... » Scientists, institutes * f.e. Dr. Jan Kuever, expert of MIC… » Planners and Engineers * f.e. awa.consult… » Expert assoziations * f.e. German assoziation for waste management (DGAW) * f.e. Environmental cluster Bavaria » Producers of metrology a.m.m. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Last project: International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

The film of the project

» click here! International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Workshops and congresses in 6 areas of germany

15.11.2012 11.10.2012 Bielefeld Halle/Saale

06.12.2012 25.10.2012 Wiesbaden Dresden

29.11.2012 06./07.02.2013 Augsburg in Gera International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Impressions of the Workshops International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Impressions of the Congress International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

AWASYS Congress main topic

100 years… …advanced Wastewater Technology… …needs new Ideas!? International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Looking for project partners!

» Workgroup 1 “Practical solutions for existing sewage systems”

»Worksgroup 2 “Wastewater monitoring systems for the future- New systems, materials, control systems, planning tools ...”

Interesting for you? Talk to me! International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

The beginning over 150 years ago

» smelly streets » diseases & epidemics » William Lindlay 1843 Hamburg » start of modern wastewater technology

[www.hamburg.de] [www.urbaner-metabolismus.de] International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Today we discuss about

MIC in sewage systems - What can we do in practice? International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Sewers and pressure pipes in Germany

» 550.000 km sewers » 100.000 km sewage pressure pipes (DN 80 - 250)

» 5.000 pneumatical pumping stations » 100.000 hydraulical pumping stations International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Many influences for MIC

Sewage system » structural and technical systems

Sewage Sewage producers »Changing cocktail with potential for » Drinking water consumption decreases, biological and chemical reaction thats why volume of sewage decreases

External conditions » Demography, energy costs, wastewater will be a valuable material International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Local aging from 1999 to 2020 (Germany)

East Germany is a problem area

[gwf-WASSER/ABWASSER, November 2010 M. Nowack, S. John, J. Tränckner, E. Günther] International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Migration of the population by 2020 (Germany)

Most areas will become problem areas

[BBR M. Nowack, S. John, J. Tränckner, E. Günther] International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Correlation

„If sewage is missing, the risk for MIC will grow.“ International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

MIC

„Microbielly induced corrosion“

The expert Dr. Kuever please! International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Anoxic conditions

MIC is present only if microbial sulfide is formed! Then other microbes produce sulfuric acid! International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Normal to low pH pH 6: 100% H2S pH 9: 0% H2S

MIC is dependent

on H 2S (gas) content in sewage International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Sewage temperature

The biological activity for the production of Sulfuric acid is higher at 30 °C than at 12 °C International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Results of MIC International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Cast iron and conrete International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Cast iron and concrete International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Concrete International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Manhole International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Sewage vacuum station International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Sewage pumping station International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

MIC over the sewage level International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Question

What we can do in the practice? International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Posibilities

There are over 50 options. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

General answers

• Generate more sewage? Usually UNPOSSIBLE. • New guidelines for design and planning improvements? POSSIBLE. • Sewage systems problem-oriented building? POSSIBLE. • Sewage systems problem-oriented operating? POSSIBLE. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

A big problem

Wastewater changes on the way from its origin to its cleaning! International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Question

What is sewage/wastewater? International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Sewage - a special liquid! International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Official definition

Wastewater is water altered by domestic, commercial, agricultural or other use in its properties and the effluent (waste water), and the precipitates, draining and collected water (rain water) from built-up or paved areas.

As well as the waste water discharged from facilities for treatment, storage and dumping of wastes and fluids are collected. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

My own definition!

The most complicated liquid, diffuse, with living microorganisms, loaded with biological and chemical ingredients, under physical and climatic influences which will arise through any mixing and uncontrolled changes of water, fluids, soluble and insoluble substances from different locations which are in various stages, phases, and concentrations and in an unsteady state. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Different options in a sewage system

» producers of sewage » gravity sewer lines » lifting and pumping stations » pressure lines » sewage treatment plants International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Sewage in pumping stations and pressure pipes

Pumping Transfer station point Pressure pipe Gravity pipe

Gravity pipe International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Pumping systems are MIC problem areas

Pumping Transfer station point Pressure pipe Gravity pipe

Gravity pipe » Desposits and sewer slime » Plenty time for biological reactions » No oxygen supply... International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Technological processes

Hydraulical processes Pneumatical processs

without within with alternative Oxygen Oxygen meassures enrichment enrichment

Sewage pumping through pressure pipes International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Hydraulical Sewage pumping

Verdrängermaschinen Strömungsmaschinen (displacement maschines) (current maschines) International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Pneumatical sewage pumping

[Hoelschertechnic]

[Oekermann]

[WEISMANN]

[Hoelschertechnic]

[WEISMANN]

[WEISMANN] International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Different options in a sewage system

Mixture of different part-systems

Slaugtherhouse

Study area

Gravtiy pipe

Pressure Wastewater pipe treatment plant

Industrie area

Highway parking International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Two main strategies against MIC

Strategy against Microbially Induced Corrosion

ACTIVE PASSIVE measures measures International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Active measures

Measures which aim to preserve the freshness of sewage or its refreshing. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Active measures against Active measures Microbially Induced Corrosion

by planning by operating by regulation by sewage by sewer atmosphere and construction with respect to treating treating

»Sulfide balance »Cleaning »Sulfur »Useful life »Systematic compounds »Method »Additionally »pH »Hydraulic preventiv »Organic load »Design »Additionally if »Temperature required

by physical by biological by chemical by improving of by mechanical treating treating treating naturel ventilation ventilation

»Thinning »Partially by oxidants, like by pricipitation, by alkalization, by inhibiting, like »Refreshing cleaning »Natural oxygen like like »Bactericidal »Stripping »Biological »Technical »Iron salts »lime oxidation oxygen »Caustic soda »Microbially »Peroxide treating »Nitrate »Ozone »Chlorine compounds International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Passive measures

Measures which aim to minimize the negative impact of existing sulfide problems. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Passive measurs against Passive measures Microbially Induced Corrosion

by influencing the by sulfuric-acid- by sewer atmosphere biological layer in the gas resistant material treating chamber

by sacrificed by protective by resistant by chemical by biological by chemical layer covers material treating treating treating

»Thinning »Coating »Concrete »Thinning of »Bio filter »Oxidizing air »Refreshing »Lining »Plastic concentration »Bio washer washing »Stripping »Stoneware »Bio washer »Percolating »Ozoniation »Glas »Adsorption by filter /washer »UV treating activated »Neutralization carbon with or without »(Masking) mechanical ventilation International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Practical options

• More problem-oriented design and planning

• More problem-oriented building

• More problem-oriented operating International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Realistic outlook

• negative demografic development • no new industry location • cost reduction in private and industrial sector • exaggerated ideas for environmental protection

this means: • sewage will decrease and will contain less water • risk potential will rise • „compensating measures“ required and more often • costs for „accompanying measures“ will rise • numbers of paying customers will decrease • specific costs will increase

…a spiral? International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

More difficult for designer (planner) & operator

Both have to look what can influence the planning under fixed terms, and what impact will there be on function, reliability, required measures, economic feasibility, and finally what will be the follow-up International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Problem-oriented design and planning

Use forecasts for a problem-oriented planning. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Forcasts are possibel

• Forcasts in sewage pressure pipe systems • Forcasts in sewage gravity pipe systems

Caution!

• same causes, • similar correlations, • similar procedures, • different ways International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Mögliche Prognosen und Ergebnisse

- Complete data for oxygen and sulfide in all areas of the system - risk for odor formation - Geruchsstoffausbreitung - risk for corrosion - risk assessment for materials and components - simulation of possible replacement and countermeasures - Validation of possible measures - comparison: efficiency of energy efficiency of materials reliabiliy costs for maintenance costs for investments economic feasibility International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

To Make Gravtiy pipe Slaugtherhouse

• Situation capturing Study area • Target setting • Sewer area analysing • Identifying influences Wastewater (z.B. industrie, location, demographics, economics…) Pressure treatment plant pipe • Three reference modells defining (Volume of sewage stays the same, falls or rises Quality of sewage stays the same, falls or rises …) Industrie area • Examine, calculate and estimate models, impacts, risks and measures Highway • Facing the pros and cons, compare costs, parking • Decide on More International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

MIC

Survey of the problem Practical experience - Object data (location, dimension, materials) WAYTE - Quantity of sewage (hydraulic data) THISTLETH

- Quality of sewage (analytical data) OY MER PO B - Problem spezific data HVIT OO VED N -JAC OBS Determination of the basics for a prediction EN & POLDER - Comparative calculations using different models LEN MECHE - matching with practical experiences DW A 116 Making a prediction

- Comments of the results and hints International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Is there a general solution?

NO! Every sewer is unique! International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

Call us for help! We love solution. International Conference in Florence, 5-7 June, 2013 „Microbielly induced corrosion in sewage systems - what can we do in practice?“ Dipl.-Ing. Dieter Weismann, awa.consult and Dr. rer. nat Jan Küver, MPA Bremen

… Thank you.