Record Display for the EPA National Library Catalog

RECORD NUMBER: 28 OF 217

OLS Field Name OLS Field Data
Main Title Characterization of the Activated Sludge Process.
Author Bargma, Robert D. ; Borgerdin, Joseph ;
CORP Author Los Angeles City Bureau of Sanitation, Calif.
Year Published 1973
Report Number DI-14-12-148; EPA-17090-FJU; R2-73-224,; 11069
Stock Number PB-221 340
Additional Subjects ( Sewage treatment ; Activated sludge process) ; ( Activated sludge process ; Process variables) ; Biochemical oxygen demand ; Chemical removal(Sewage treatment) ; Carbon ; Nitrogen ; Phosphorus ; Performance evaluation ; Analysis of variance ; Flow rate ; Substrates ; Chemical oxygen demand
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-221 340 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 69p
Abstract
Operational control parameters of the activated sludge process during steady-state and transient flow conditions were evaluated and related to carbon, nitrogen, and phosphorus removals. During steady-state testing, chemical oxygen demand, net growth rate, aeration tank detention time, and final settling tank detention time were found to be the key operational control parameters. Changes in COD removal and suspended solids removal were proportional to a change in control parameter. Nitrogen removal was related to specific operational parameters and system nitrogen balances were computed. Phosphorus removal without external chemical addition was related to specific operational parameters. (Author)