Record Display for the EPA National Library Catalog


Main Title Effect of an Activated Sludge Wastewater Treatment Plant on Ambient Air Densities of Aerosols Containing Bacteria and Viruses.
Author Fannin, K. F. ; Vana, S. C. ; Jakubowski, W. ;
CORP Author IIT Research Inst., Chicago, IL. ;Life's Resources, Inc., Addison, MI.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1985
Report Number EPA-R-806062; EPA/600/J-85/045;
Stock Number PB85-212140
Additional Subjects Activated sludge process ; Aerosols ; Air pollution ; Sewage treatment ; Bacteria ; Viruses ; Urban areas ; Microorganisms ; Bioassay ; Density(Mass/volume) ; Public health ; Exposure ; Plants(Botany) ; Reprints ; Environmental health ; Air pollution effects(Humans) ; Air pollution effects(Plants) ; Baseline measurements ; Biological indicators
Library Call Number Additional Info Location Last
NTIS  PB85-212140 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
Bacteria and virus-containing aerosols were studied during late summer and fall in a U.S. midwestern suburb before and during the start up and operation of an unenclosed activated sludge wastewater treatment plant. The air in this suburban area contained low-level densities of indicator microorganisms. After the plant began operating, the densities of total aerobic bacteria containing particles, standard plate count bacteria, total coliforms, fecal coliforms, fecal streptococci, and coliphages increased significantly in the air within the perimeter of the plant. Enteric viruses were detected in low densities from the air emissions of this plant. Only standard plate count bacteria remained at significantly higher than baseline densities beyond 250 m downwind from the center of the aeration tanks. Fecal streptococci and coliphages appeared to be more stable in aerosols than the other indicator microorganisms studied. In general, the densities of microorganism containing aerosols were higher at night than during the daytime. The techniques used in this study may be employed to establish microorganism-containing aerosol exposure during epidemiological investigations.