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RECORD NUMBER: 6 OF 149

OLS Field Name OLS Field Data
Main Title Anaerobic-aerobic treatment process for the removal of priority pollutants
Author Slonim, Zahava ; Lien, L. T. ; Eckenfelder, W. W. ; Roth, J. A.
Other Authors
Author Title of a Work
Lien, L. T.
Eckenfelder, W. W.
Roth, J. A.
CORP Author Vanderbilt Univ., Nashville, TN.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Publisher U.S. Environmental Protection Agency, Robert S. Kerr Environmental Research Laboratory,
Year Published 1985
Report Number EPA/600/2-85/077
Stock Number PB85-226900
OCLC Number 48624463
Subjects Water--Purification--Biological treatment
Additional Subjects Anaerobic processes ; Aerobic processes ; Herbicides ; Water pollution control ; Activated sludge process ; Fluidized bed processors ; Industrial waste treatment ; Pesticides ; Microorganisms ; Sucrose ; Biodeterioration ; Cresol/dinitro ; Municipal wastes ; Biological processes ; Pretreatment(Water)
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB85-226900 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 122 p. : ill. ; 28 cm.
Abstract
The removal of 4,6-dinitro-o-cresol (DNOC) was investigated using an anaerobic recycle fluidized bed reactor as a pretreatment stage followed by an activated sludge reactor. The DNOC was completely converted during the anaerobic pretreatment stage for influent DNOC concentrations as high as 600 mg/1. While complete conversion of DNOC occurred during the anaerobic pretreatment stage, there was only 25% COD removal. The subsequent aerobic activated sludge stage reduced the anaerobic stage effluent COD by 80%, resulting in about 85% overall removal. Batch tests established a range of DNOC loading rates for the anaerobic fluidized bed. The batch tests also indicated that DNOC did not degrade in the absence of a readily biodegradable co-substrate, and could not be used as a single carbon source by the anaerobic bacteria. This investigation used sucrose as the co-substrate. Anaerobic DNOC biodegradation was found to be a function of sucrose concentration. Previous investigation of aerobic treatment of DNOC using conventional activated sludge process showed that DNOC removal is less than 25% and the concentration of DNOC that is tolerated by activated sludge microorganisms is only about 50-60 mg/1. The present investigation demonstrated that anaerobic-aerobic treatment is an effective treatment process for the removal of DNOC.
Notes
Bibliography: p. 64-69. Microfiche.