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Biological surfaces plus carbon upgrade plant water treatment

Journal Article · · Oil Gas J.; (United States)
OSTI ID:5152794
A $5.3 million waste-treatment facility, completed by Jacobs Engineering Co. at Tosco Corp.'s Avon refinery, Calif., is the result of a Phillips Petroleum Co. research program which was started in 1972. The facility, which processes 4.5 million gal/day of wastewater, combines a rotating biological surface (RBS) system with an activated-carbon storage and dispensing system, a pair of clarifier settling tanks, and a mixed-media granular filter. After removal of free oil, free-floating solids, hydrogen sulfide, and ammonia, biological treatment begins in a 20 acre aerated surge pond from which the effluent is pumped to the RBS facility, which provides 1.7 million sq ft of rotating-disk surface. Each disk is exposed alternatively to oxygen and wastewater and gradually accumulates a biological growth (biomass), which falls off in the form of a sludge. The process reduced COD, BOD (from 150 to 15 mg/l.), and phenol (from 15 ppm to 0.02 ppm), and the wastewater complies with the latest discharge requirements of the EPA and the California Regional Water Quality Control Board.
OSTI ID:
5152794
Journal Information:
Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 76:2; ISSN OIGJA
Country of Publication:
United States
Language:
English