Record Display for the EPA National Library Catalog

RECORD NUMBER: 642 OF 4951

OLS Field Name OLS Field Data
Main Title Characterization of Air Pollutants from an Activated Sludge Process.
Author Scheff, Peter A. ; Holden, Janet A. ; Wadden, Richard A. ;
CORP Author Illinois Univ. at the Medical Center, Chicago. School of Public Health.;Health Effects Research Lab., Cincinnati, OH.
Year Published 1981
Report Number EPA-R-805003; EPA-600/J-81-172;
Stock Number PB81-212227
Additional Subjects Activated sludge process ; Air pollution ; Aeration ; Water pollution control ; Particles ; Coliform bacteria ; Concentration(Composition) ; Design criteria ; Performance evaluation ; Sampling ; Sites ; Reprints ; Total suspended particulates ; Air pollution sampling ; NTISEPAORD
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB81-212227 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 11p
Abstract
The activated sludge process is a common and useful method for treating wastewater. However, because of the necessity for aerating the sludge, the potential exists for release of a variety of viable and nonviable pollutants to the ambient atmosphere. This paper reports the results of an 8-month monitoring study in the vicinity of a large activated sludge plant in a Chicago suburb. Based on the measurements of this study, the wastewater treatment plant is a significant source of TVP (total viable particles) and total coliforms. Atmospheric TVP concentrations were elevated above background out to 1.6 km. Levels for total coliforms were reduced to background at less than 0.8 km, probably reflecting the limited viability of these bacteria in air. On the average, 95% of the viable particles discharged from the plant were greater than 2.1 micrometers, and 99% of the total coliform particles were greater than 1.1 micrometers. The health implications of these pollutants for populations living in the vicinity of the plant are not well defined. But the fact that plant emissions have the potential for relatively widespread dispersion should alert those concerned with the operation, planning, and design of activated sludge processes to incorporate the most effective control measures possible.