Record Display for the EPA National Library Catalog

RECORD NUMBER: 24 OF 25

Main Title Use of a Vacuum Filtration Technique to Study Leaching of Indigenous Viruses from Raw Wastewater Sludge.
Author Hurst, C. J. ; Brashear, D. A. ;
CORP Author Health Effects Research Lab., Cincinnati, OH. Toxicology and Microbiology Div.
Year Published 1987
Report Number EPA/600/J-87/160;
Stock Number PB88-151683
Additional Subjects Vacuum filtration ; Viruses ; Sludge disposal ; Developing countries ; Leaching ; Washing ; Beef ; Extraction ; Efficiency ; Stainless steels ; Evaluation ; Feces ; Contamination ; Ground water ; Survival ; Waste water ; Reprints ; Sewage sludge ; Secondary treatment
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB88-151683 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
Abstract
The relative efficiencies of a buffered beef extract solution, sewage secondary effluent, and distilled water, were compared in a study designed to simulate leaching of indigenous enteric viruses from raw primary sewage sludge. The initial sludge liquid fractions, termed sludge liquor, and leachates from five successive washings with one of the three test fluids were removed from the sludge samples by vacuum filtration through stainless steel mesh screens. The highest calculated efficiency for virus leaching was 2.8 + or - 1.4 percent obtained with the beef extract solution. This indicated leaching to be a very inefficient process and may suggest that viruses present in sewage sludges will remain highly solids-associated following land disposal.