Rainer Abendt Dr.- Ing. Rainer-Werner Abendt Nuremberg Contact: Wastewater Workshop in Nairobi 29-th August till 03-th September 2011.

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Presentation transcript:

Rainer Abendt Dr.- Ing. Rainer-Werner Abendt Nuremberg Contact: Wastewater Workshop in Nairobi 29-th August till 03-th September 2011 Optimization of Wastewater Disposal

Rainer Abendt Optimization of Wastewater Disposal Energy Schematic Flow Chart Sources of energyDemand for energy Minimization of Energy consumption Wastewater Waste Wastewater Sludge / Gas Biomass / Co-Digestion Sludge (Mono / Co) Waste, Biomass Sewer system Treatment plants Waste treatment plants Wastewater Waste Wastewater Sludge / Gas Biomass / Co-Digestion Sewer system Sludge (Mono / Co) Waste, Biomass

Rainer Abendt Optimization of Wastewater Disposal Energy Chart Sources of energy WastewaterWaste River Sludge incineration Waste incineration Digestion of biomass waste Use the gas of the dump Use of the wastewater heat Potential power addition to the WW treatment plants Anaerobic waste water processing Energy generation by digestion of the sludge/ gas Energy generation with biomass Co-digestion Hydro Electric power NAWARO Model used to Calculate data. Geothermal Power

Rainer Abendt Optimization of Wastewater Disposel Co-digestion of Waste at WWT plant Mode of operation Biological waste Treatment plant Waste from Preparation Contaminated materials Sludge Mixer Storage Digester Electric power Heat Wastwater Storage Dewatering Utilization

Rainer Abendt Optimization of Wastewater Disposel Vegetable residue (Biomass) Grease trap material Examples of Co- Substrates

Rainer Abendt Optimization of Wastewater Disposal Frying fatFood waste More Examples of Co-Substrate

Rainer Abendt Water Treatment Process Using Denitrification ! Dissolved Carbon particle N-ox Nitrogen (gas) No dissolved O 2 ! Bacteria take O 2 from inside a macromolecule and use to make CH 4 and CO 2 Phosphorus removel by sludge PO 4 is converted to PO 3 and energy is released

Rainer Abendt Water Treatment Treatment 3. Step: 2. Activated Sludge (N) (low loaded) Carbon Substrate NitrificationDenitrification Recirculation Sludge recirculation Gravity Thickeners Secondary Claryfiers Activated Sludge Pressed Air

Rainer Abendt Water Treatment Air

Rainer Abendt Use of the water heat out of the sewer or the treatment plant Uses of Wastewater Include: Optimization of Wastewater Disposal Use of the water heat outside the sewer or the treatment plant for heating or conversion to electricity As an alternative energy source for the treatment plant In Anaerobic wastewater processing For agricultural use through irrigation by farmers Treated water for recycling in industrial processes Energy generation of sludge digester (Methane gas) Energy generation of biomass, or organic waste similar with the sludge in the digester Dried Sludge for fertilizing in agriculture Sludge incineration for heating energy

Rainer Abendt Optimization of Wastewater Disposal Thank you for your attention