Main Title |
Destruction of Enteric Bacteria and Viruses during Two-Phase Digestion. |
Author |
Lee, K. M. ;
Brunner, C. A. ;
Farrell, J. B. ;
Eralp, A. E. ;
|
CORP Author |
Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. ;Cincinnati Univ., OH. Dept. of Civil and Environmental Engineering. |
Publisher |
c1989 |
Year Published |
1989 |
Report Number |
EPA/600/J-89/526; |
Stock Number |
PB91-196188 |
Additional Subjects |
Enterobacteriaceae ;
Enteroviruses ;
Kinetics ;
Escherichia coli ;
Streptococcus ;
Feces ;
Sludge ;
Heat ;
Decontamination ;
Water microbiology ;
Microbial colony count ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-196188 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
11p |
Abstract |
The pathogenic microorganism destruction obtained during two-phase anaerobic digestion was compared to that for a conventional single-stage digester using municipal wastewater treatment sludge. Operation was draw-and-fill. Total digester residence times of 10 days and 20 days were evaluated. Evaluations were carried out at 35 and 53 C. Microorganisms measured included fecal coliforms, Escherichia coli, fecal streptococci, and enterovirus. Pathogen reductions were compared to those calculated from a kinetic relationship developed specifically for draw-and-fill operation. Ascaris were added to digested sludge and held at 53 C for up to 8 hours to observe their decline with time under thermophilic conditions. Common digester operating parameters were also measured. At the thermophilic temperature of 53 C essentially all the microorganisms measured were reduced to undetectable levels. At 35 C, two-phase digestion achieved from 0.48 to 0.91 greater log reduction of bacterial indicators, but essentially the same reduction in virus. |
Supplementary Notes |
Pub. in Jnl. of Water Pollution Control Federation, v61 n8 p1421-1429 Aug 89. Prepared in cooperation with Cincinnati Univ., OH. Dept. of Civil and Environmental Engineering. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Destruction of Enteric Bacteria and Viruses during Two-Phase Digestion. |
Category Codes |
57K; 68C; 68D |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/14 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
120724635 |
Origin |
NTIS |
Type |
CAT |