Comparison of biological and chemical phosphorus removals in continuous and sequencing batch reactors

Journal Article · Thu Jan 01 04:00:00 EST 1987 · J. - Water Pollut. Control Fed.; (United States)

OSTI ID:6300282

Ketchum, L H; Irvine, Jr, R L; Breyfogle, R E; Manning, Jr, J F

A full-scale study of phosphorus removal has been conducted at Culver using continuous-flow operation, SBR operation, and several different chemical treatment schemes. A full-scale demonstration of SBR biological phosphorus removal also has been shown to be effective. Four contributing groups of organisms and their roles in biological SBR phosphorus removal have been described: denitrifying organisms, fermentation product-manufacturing organisms, phosphorus- accumulating organisms, and aerobic autotrophs and heterotrophs. The SBR can provide the proper balance of anoxic, anaerobic, and aerobic conditions to allow these group of organisms to successfully remove phosphorus biologically, without chemical addition. Treatment results using various chemicals for phosphorus removal, both during conventional, continuous-flow operation and after the plant was converted for SBR operation, have also been provided for comparison. Effluent phosphorus concentrations were almost identical for each period, except for the period when phosphorus was removed biologically and without any chemical addition when effluent phosphorus concentrations were the lowest. These removals were made as a result of settling alone; no tertiary rapid stand filter was used or required.

• Research Organization: Univ. of Notre Dame, IN; Univ. of Alabama, Birmingham
• OSTI ID: 6300282
• Journal Information: J. - Water Pollut. Control Fed.; (United States), Journal Name: J. - Water Pollut. Control Fed.; (United States) Vol. 59:1; ISSN JWPFA
• Country of Publication: United States
• Language: English

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AEROBIC CONDITIONS
ANAEROBIC CONDITIONS
AUTOTROPHS
BATCH CULTURE
BIOCONVERSION
BIOLOGICAL ACCUMULATION
BIOLOGICAL EFFECTS
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
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ELEMENTS
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HYDROGEN COMPOUNDS
LIQUID WASTES
NONMETALS
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PHOSPHORUS
QUANTITY RATIO
REMOVAL
WASTE WATER
WASTES
WATER
WATER TREATMENT