Basic Lagoon. Floating Mechanical Aerator Aerated Lagoon.
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Transcript of Basic Lagoon. Floating Mechanical Aerator Aerated Lagoon.
Basic Lagoon
Floating Mechanical Aerator
Aerated Lagoon
WasteCleanWater?
Wastewater Treatment
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- Very simple!
Basic Lagoon
WasteCleanWater
WasteCleanWater
O2 O2 O2 O2 O2 O2 O2
- Very simple!- However, mixing depends on wind!- Therefore, sometimes poorly mixed- Poor mixing means poor aeration- Oxygen supply will then be poor- Lagoon may stink!!
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Basic Lagoon
WasteCleanWatero
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O2 O2
- Improved aeration- Better oxygen supply- Better biological kinetics- Smaller lagoon
Aerated Lagoon
Benson WWTFLagoon Before Cleanout
Wastewater Management Division’s Paul Olander (in the pond) and Chuck Kellogg, former Benson Selectman, moving stabilized biosolids to the
manure pump intake
Tanker Truck Land Applying the Biosolids
Benson WWTF Lagoon After the Cleanout
Anaerobic Treatment Vs.Activated Sludge and Pond Technologies in Jordon
Fate of carbon and energy in aerobic (left) and anaerobic (right) wastewater treatment
Aerobic
100kgCOD+Aeration
Sludge, 30-60 kg
2-10 Kg COD
Anaerobic
100 kg COD
Sludge, 5 Kg 10-20 kg COD
Integrated wastewater treatment in Faisalabad
Description of the current system:
Pond system incorporating 4 anaerobic ponds, 6 facultative ponds and 4 sludge storage ponds, with design flow of 90,000 m3/day.
The area of each anaerobic pond is 2.75 ha.
The area primary facultative ponds is 14.9 ha. each and the area of secondory and tertiary ponds is 17.4 ha. each
Integrated wastewater treatment in Faisalabad
Western Domestic Sewage Treatment Ponds (WDSTP), Faisalabad
Integrated wastewater treatment in Faisalabad
Design Modifications
Alternative 1: The flow from
facultative pond 5 is diverted to 3 and pond 6 is reserved for fish farming
Pond 2 and 5 are used for duck weed cultivation.
F2
F6
F3
F5
A1
A2
A3
A4
A5
A6
F1
F4
Effluent
Influent
442 kg/(ha.d)
442kg/(ha.d)
144 kg/(ha.d)
144 kg/(ha.d)
A:Anaerobic PondsF: Facultative ponds
Design Modification Alternative 1
Integrated wastewater treatment in Faisalabad
Alternative 2: Ponds 2 and 5
are used for duckweed production and 3 and 6 for fish farming allowing small amount from 2 and 5 entering 3 and 6.
Remaining water by passed directly to the effluent drain.
F1
F2
F6
F3
F5
A1
A2
A3
A4
A5
A6
F4
Effluent
Influent
442 kg/(ha.d)
442kg/(ha.d)
144 kg/(ha.d)
144 kg/(ha.d)
A:Anaerobic PondsF: Facultative ponds
Design ModificationAlternative 2
