rainer abendt dr.- ing. rainer-werner abendt nuremberg contact: [email protected] wastewater...
TRANSCRIPT
Rainer Abendt
Dr.- Ing. Rainer-Werner AbendtNuremberg
Contact: [email protected]
Wastewater Workshop in Nairobi 29-th August till 03-th September 2011
Optimization ofWastewater Disposal
Rainer Abendt
Optimization of Wastewater Disposal
Energy Schematic Flow Chart
Sources of energy Demand for energyMinimization 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
Wastewater Waste 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 toCalculate data.• Geothermal Power
Rainer Abendt
Optimization of Wastewater Disposel
Co-digestion of Waste at WWT plantMode of operation
Biological waste
Treatment plant
Waste from
PreparationContaminated
materials
Sludge
MixerStorage
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 O2! Bacteria take O2
from inside a macromolecule and use to make
CH4 and CO2
Phosphorus removel by sludge
PO4 is converted to PO3 and energy is
released
Rainer Abendt
Water Treatment
Treatment 3. Step: 2. Activated Sludge (N) (low loaded)
Carbon Substrate
NitrificationDenitrificationRecirculation
Sludge recirculationGravity Thickeners
Secondary Claryfiers
Activated Sludge
Pressed Air
Rainer Abendt
Water Treatment
Air
Rainer Abendt
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