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Basic Lagoon

Basic Lagoon. Aerated Lagoon. Floating Mechanical Aerator. Wastewater Treatment. Clean Water. Waste. ?. o. o. o. Basic Lagoon. Clean Water. Waste. Very simple!. o. Clean Water. Waste. o. o. Basic Lagoon. O 2. O 2. O 2. O 2. O 2. O 2. O 2. Very simple !

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Basic Lagoon

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  1. Basic Lagoon

  2. Aerated Lagoon Floating Mechanical Aerator

  3. Wastewater Treatment Clean Water Waste ?

  4. o o o Basic Lagoon Clean Water Waste • Very simple!

  5. o Clean Water Waste o o Basic Lagoon 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!!

  6. o Clean Water Waste o o Aerated Lagoon O2 O2 • Improved aeration • Better oxygen supply • Better biological kinetics • Smaller lagoon

  7. Benson WWTFLagoon Before Cleanout

  8. Wastewater Management Division’s Paul Olander (in the pond) and Chuck Kellogg, former Benson Selectman, moving stabilized biosolids to the manure pump intake

  9. Tanker Truck Land Applying the Biosolids

  10. Benson WWTF Lagoon After the Cleanout

  11. Anaerobic Treatment Vs.Activated Sludge and Pond Technologies in Jordon • Fate of carbon and energy in aerobic (left) and anaerobic (right) wastewater treatment Anaerobic Aerobic 2-10 Kg COD 100 kg COD Sludge, 30-60 kg 10-20 kg COD Sludge, 5 Kg 100kgCOD+Aeration

  12. 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

  13. Integrated wastewater treatment in Faisalabad Western Domestic Sewage Treatment Ponds (WDSTP), Faisalabad

  14. F3 F2 F1 144 kg/(ha.d) Effluent 442 kg/(ha.d) A3 A2 A1 Influent F6 F5 F4 A6 A5 A4 144 kg/(ha.d) 442 kg/(ha.d) A:Anaerobic Ponds F: Facultative ponds Design Modification Alternative 1 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.

  15. F3 F2 F1 144 kg/(ha.d) Effluent 442 kg/(ha.d) A3 A2 A1 Influent F6 F5 F4 A6 A5 A4 144 kg/(ha.d) 442 kg/(ha.d) A:Anaerobic Ponds F: Facultative ponds Design Modification Alternative 2 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.

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