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Main Title Biological methods of sludge dewatering
Other Authors
Author Title of a Work
Mechalas, B. J.
Paine, Irving J.
Delafield, Frederick P.
CORP Author Envirogenics Company.; Envirogenics Co., El Monte, Calif.
Year Published 1971
Report Number PB207480
Stock Number PB-207 480
OCLC Number 11850652
Subjects Sewage sludge--Drying ; Sewage--Purification--Biological treatment
Additional Subjects ( Sludge disposal ; Dewatering) ; ( Muramidase ; Sludge disposal) ; ( Filtration ; Sludge) ; Filter aids ; Sewage treatment ; pH control ; Biodeterioration ; Deflocculating ; Depolymerases
Library Call Number Additional Info Location Last
EMBD MF PB-207 480 NRMRL/GWERD Library/Ada,OK 06/18/2004
NTIS  PB-207 480 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vii, 143 pages illustrations 28 cm.
Abstract Improved dewatering of sewage sludge has been accomplished for the first time by biological means; namely, through the agency of the enzyme lysozyme acting under controlled conditions. Improved dewatering was measured by a 4 to 8-fold increase in filtration rate, which, if extrapolated to plant scale operations, should result, in a given time period, in a 2 to 3-fold increase in solids yield, thus achieving a significant cost saving. A number of other exo- and endo-enzymes were also tested for their effects on dewatering, with uncertain results. Several microorganisms were isolated that showed lysis around their colonies when they were grown on agar plates containing sludge. Of major significance is the demonstration that the relative mild conditions of a biological process permit attacking the sludge dewatering process at its source - the matrix material. (Author)
Notes "Project #17070 EVY. Contract #14-12-427." Includes bibliographical references. Microfiche.
Place Published {Washington?}
Corporate Au Added Ent United States. Environmental Protection Agency. Water Quality Office. ; United States. National Technical Information Service.
PUB Date Free Form 1971.
Series Title Traced Water pollution control research series
BIB Level m
Cataloging Source OCLC/T
OCLC Time Stamp 20040615165351
Language eng
Origin OCLC
OCLC Rec Leader 01295nam 2200313I 45020