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RECORD NUMBER: 3 OF 4

OLS Field Name OLS Field Data
Main Title Inactivation of Enteric Pathogens during Aerobic Digestion of Wastewater Sludge.
Author Farrah, S. R. ; Bitton, G. ; Zam, S. G. ;
CORP Author Florida Univ., Gainesville.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1986
Report Number EPA-R-806290; EPA/600/2-86/047;
Stock Number PB86-183084
Additional Subjects Aerobic processes ; Sludge digestion ; Survival ; Aerobic processes ; Waste water ; Pathogens
Holdings
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NTIS  PB86-183084 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 79p
Abstract
The effects of aerobic and anaerobic digestion on enteric viruses, enteric bacteria, total aerobic bacteria, and intestinal parasites were studied under laboratory and field conditions. Under laboratory conditions, the temperature of the sludge digestion was the major factor influencing survival of bacteria and viruses. Their survival was substantially greater at 7 C than at 28 C. Lowering the temperature or dissolved oxygen level reduced the percentage of solids-associated organisms for bacteria but not for viruses. Bacteria were inactivated at different rates during aerobic sludge digestion. Streptococcus faecalis was more stable than Salmonella typhimurium or Escherichia coli. Varying detention time or source of sludge did not affect the rate of inactivation of viruses or bacteria. Aeration of stock Ascaris suum in sludge reduced percent embryonation and infectivity in rats when compared to aeration in 0.1 N H2SO4.