||Advanced Waste Water Treatment Using Powdered Activated Carbon in Recirculating Slurry Contactor-Clarifiers.
Garlan, C. F. ;
Beeb, R. L. ;
||Infilco, Tucson, Ariz.
||FWQA-14-12-400; FWQA-17020-FKB; 05386,; 17020-FKB-07/70
( Sewage treatment ;
Activated carbon treatment) ;
Activated carbon ;
Cost estimates ;
Water flow ;
Pilot plants ;
Field tests ;
||Some EPA libraries have a fiche copy filed under the call number shown.
||Pilot-scale studies dealing with the use of recirculating-slurry solids-contact clarifiers in treating activated sludge plant effluent were studied. Evaluation of all available materials led to selection of Darco S-51 activated powdered carbon and Purifloc C-32 polyelectrolyte flocculating agent, with 6 to 7 mg/l of polyelectrolyte required at a carbon feed rate of up to 140 mg/l. 30% greater carbon efficiency, as opposed to a single stage conventional unit, was achieved with a single slurry unit, while results for two series clarifiers were comparable to that of two conventional counter-current adsorption systems requiring multiple agitated tanks, clarifiers, and filters. Estimated costs for a 10 mgd plant with 240 mg/l and 8 mg/l dosages of carbon and polyelectrolytes respectively are $0.15/1000 gal for a 10 mgd plant, and $0.12.7/1000 gal for a 100 mgd plant. Further cost reductions could be possible in the event that effluent quality restrictions would allow a decrease in the carbon dosages. (WRSIC abstract)
||Paper copy available from SOD $0.75 as I67.13/4:ORD-17020-FKB-07/70.
|NTIS Title Notes
||Water pollution control research series.
|PUB Date Free Form