dr.- ing. rainer-werner abendt nürnberg contact: rainer.abendt@gmx.de

®Rainer Abendt

Dr.- Ing. Rainer-Werner AbendtNürnberg

Contact: rainer.abendt@gmx.de

First WASPA Annual International Conference & Exhibition

8-9th September 2011, KICC Grounds, Nairobi, Kenya

Can the costs for waste water disposal be minimized?

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®Rainer Abendt

It is true, waste water disposal is expensive!It is true, waste water disposal is expensive!

But it is necessary!But it is necessary!

Why?It`s undeniable:

Supply of clean water to the population is indispensable for health provision. (National Water Services)

With appropriation of water, the disposal of the sewage system must be secured.

If this is not possible, Epedemien who are transmitted via the water are at any time possible.

Therefor, the construction of a sewage system is a health provision. A hygiene measure!

This evolution was also in Europe. It only began there already 100 years ago.

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Effluent Standards (emission)

Water Quality Standards (imission)

Education Standards: labours and academic

Health and Safety Standards

2

1

1

2

3

43

4

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Interest24%

Depriciation30%

Personnel16%

Maintenance16%

Others14%

17,5 Mio. €17,5 Mio. €

17,6 Mio.€17,6 Mio.€ 25,9 Mio. €25,9 Mio. €

14,9 Mio. €14,9 Mio. €31,5 Mio. €31,5 Mio. €

Example Nürnberg, the Cost of Wast Water Disposal per year:(500.000 Inhabitants and industrial pollution of 1 million Inhabitants)

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Waste water disposal(Discharge and treatment)

Environmental laboratory for:Self-monitoring;Industrial monitoring;Pollutans;Heavy polluters

Administration:

Finances;

PersonnelBy-laws:

Connection approval;Industrial monitoring;Cost covering

Sewer construction:

General drainage;Sewer network expansion;Sewer operation:

Maintenance, repair, operation/control of storage space and outlets (provisions under water law)

Wastwater treatment works construction:Matching structures to requirements including commissioning

Wastwater treatment works operation:Processes (provision under water law), maintenance, repair, sludge disposal

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Treatment plant

Urban area

Evolution of water crowd:

- Sewer construction

Evolution in sewer network:- By-laws

Evolution of Water quality:- Sewer operation

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Example: „Visual inspection coding system “

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Examples in TC`s on Water Subjects:CEN TC 155 „Plastics piping systems“ “

CEN TC 163 „Sanitary appliances “

CEN TC 164 „Water supply “

CEN TC 165 „Waste Water Engineering“

CEN TC 203 „Cast iron pipes “

CEN TC 208 „Elastomeric seals“

CEN TC 230 „Water analysis “

CEN TC 308 „Characterization of sludges“

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

DEN = Technical European Norms

Free trade

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Urban area

Evolution of water crowd:

- Sewer construction

Evolution in sewer network:- By-laws

Evolution of Water quality:- Sewer operation Laboratory

operating data

Demands on the sludge

Legal orders

secure disposal

government control

Automatic monitoring

Legal ordersPlanningAccompany projects

Treatmentplant

(Process system)

Product 2 "Sludge"

Product 1 „Clean Water"

Electricalengineering

Automizitation

Machine engineering

Maintenance

Building

Administration

PersonnelDocumentation

Financialmanagement

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Demands on water quality (Europe):Demands on water quality (Europe):

COD

BOD5

Ammonia Ntot

PtotSuspended Solid

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Waste Water Treatment

Sludge Disposal

54,7%

45,3%

The relation of Costs for Wast Water Treatment and Sludge disposal:

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Criteria for Sludge Treatment Disposal and Use Potenzial

Methods of disposal or use

Fertilizing in agriculture

Transport Comparission of Transport

Truck or trainCriteria: Costs, CO2-Minimization, Environmental production

Energy balanceAmount of energy for fouling, drying, transport ...Gaining Energy e.g. incinneration

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Waste water is a source of energy:

Use of the water heat out of the sewer or the treatment plant

Use of the waterpower potential on the treatment area

Anaerobe waste water processing

Treated water for irrigation in agriculture

Treated water for fabrication water

Energy generation of sludge digester (gas)

Energy generation of biomass, or organic waste similar with sludge in the digester

Sludge for fertilizing in agriculture

Sludge incineration for heating energy

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Personnel costs?

A financial manager normaly thinks:

„An employee is only a factor in costs. Minimize the worker number!“

But my experiences have showed:

A motivated worker minimize the operating costs. But he must be developed well in the field of work.

On one hand site he needs pure knowledge and on the other site practical experience.

Against the background of expensive investments and high operating costs:

„A well trained worker is the best investment for a company.“

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Example for pure knowledge, a biologic treatment step:

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17

16 15

13

12

14

B1

B2

Material flows1 : Reactor input2 : Reactor outlet3 : treatet water4 : Sludge recyclet5 : Sludge outlet6 : Air input7 : Exhaust

Measurement system

B1 : Activated sludge tank (Reactor)

B2 : Activated sludge plant

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Interest24%

Depriciation30%

Personnel16%

Maintenance16%

Others14%

17,5 Mio. €17,5 Mio. €

17,6 Mio.€17,6 Mio.€ 25,9 Mio. €25,9 Mio. €

14,9 Mio. €14,9 Mio. €31,5 Mio. €31,5 Mio. €

Example Nürnberg, the Cost of Wast Water Disposal per year:(500.000 Inhabitants and industrial pollution of 1 million Inhabitants)

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Securing the Qualification of Personnel

Question:Question:How do I acquire trained personnel, if I do not have the training and advanced training structure which is developed in Germany?

Answer:Answer:Personnel must be trained in plants locally. Helpful here is the employment of externally trained instructors or training facilities, such as are also offered by the DWA, together with a training programme.

DWA = German Association for Water, Waste Water and Waste

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Model NeighbourhoodModel NeighbourhoodGermany and Austria since 25 yearsTarget group Operatorsregional Groups approx. 10-20 Utilities2-3 meetings per yearTeachers get trained

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®Rainer Abendt

Thank you for your attention!

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

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®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

Costs of the wastewater disposalCosts of the wastewater disposal

For example in Nürnberg (including rainwater!):

In a 4-person household the costs arising for wastewater disposal for one year are shown as an example:

Fresh water consumption 35-40 m³/Person and yearPaved and connected surface area

of a detached house: 80 m²

Calculation: Wastewater charges per year (150 m³ x 1.99 EURO/m³): 298.50 €

Precipitation water charges (80 m² x 0.51 EUR/ m²): 40.80 €Total (costs per year): 339.30 €

A1

®Rainer Abendt

First WASPA Annual International Conference 8-9th September 2011, KICC Grounds, Nairobi, Kenya

A 4-person household in Germany has available an average annual income of 21.000 EURO. It must expend 1.6 % of its income for the disposal of waste water.

If the waste water charges are distributed over 365 days in the year there is a daily sum of 0.93 EURO.

Important relation of costs :Important relation of costs :If one expresses these charges in purchasing power then the

4-person household has to do without four to five cigarettes a day or one bottle of mineral water or ?

A1