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OLS Field Name OLS Field Data
Main Title Thermal treatment of municipal sewage sludges {microform} /
Author LeBrun, Thomas J. ; Tortorici, L. D.
Other Authors
Author Title of a Work
Tortorici, Liberato.
CORP Author Los Angeles County Sanitation Districts, Whittier, CA.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory,
Year Published 1984
Report Number EPA/600/2-84/104; DI-14-12-150
Stock Number PB84-196732
Subjects Sewage sludge digestion
Additional Subjects Sludge drying ; Solid waste disposal ; Dewatering ; Pilot plants ; Anaerobic processes ; Comparison ; Sewage treatment ; Odors ; Activated sewage treatment ; Performance evaluation ; Design criteria ; Sewage sludge ; Sludge treatment ; Thermal gasification
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB84-196732 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 236 p. : ill. ; 28 cm.
Abstract
The thermal conditioning research program was conducted as part of an overall long-term sludge management study for the Los Angeles and Orange County metropolitan areas. The major goal of this portion of the study was to investigate the advantages of thermal conditioning of primary and waste activated sludges prior to anaerobic digestion, on a continuous flow and pilot scale basis. The studies were designed to demonstrate whether thermal conditioning would help produce increased gas production and volatile solids destruction during subsequent anaerobic stabilization of the sludge. Anaerobic digestion and anaerobic filtration were used for sludge stabilization. The effects of thermal conditioning on sludge dewaterability were studied by means of dewatering via a filter press, vacuum filter, scroll and basket centrifuges and belt filter press. Other studies of interest included the fate of pathogens and heavy metals, and the production and control of odors during the thermal conditioning process. The pilot scale thermal conditioning unit was tested using a variety of operational conditions. Operating temperatures and pressures were varied and thermal conditioning with and without the use of oxygen was investigated. Two types of wastewater sludges were used: waste activated sludge and a blend of 65 percent raw primary and 35 percent waste activated sludge. An energy analysis was conducted to determine the net energy demands of including thermal conditioning in the sludge process.
Notes
Caption title. "May 1984." "EPA-600/2-84-104." Microform.