Record Display for the EPA National Library Catalog


Main Title Chemical primary sludge thickening and dewatering /
Author Di Gregorio, David. ; Ainsworth, J. Brian ; Mounteer, Keith J.
Other Authors
Author Title of a Work
Ainsworth, J. Brian.
CORP Author Envirotech Corp., Salt Lake City, UT. Eimco Process Machinery Div.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Available to the public through the National Technical Information Service,
Year Published 1979
Report Number EPA-600/2-79-055; EPA-68-03-0404
Stock Number PB80-108970
OCLC Number 06233230
Subjects Sewage--Purification--Phosphate removal ; Coagulation ; Sewage sludge--Drying
Additional Subjects Sludge disposal ; Chemical removal(Sewage treatment) ; Dewatering ; Thickening ; Phosphorus ; Coagulants ; Flotation ; Gravity ; Filtration ; Centrifuging ; Performance evaluation ; Economic analysis ; Pilot plants ; Iron ; Alum
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  TD769.7.D5 Region 1 Library/Boston,MA 04/29/2016
EJBD ARCHIVE EPA 600-2-79-055 Headquarters Library/Washington,DC 07/15/2013
EJBD  EPA 600-2-79-055 Headquarters Library/Washington,DC 03/31/2016
ELBD  EPA 600-2-79-055 AWBERC Library/Cincinnati,OH 05/14/2019
ESAD  EPA 600-2-79-055 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB80-108970 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xxii, 266 pages : illustrations ; 28 cm.
This report presents the results of a ten month study of the thickening and dewatering characteristics of chemical-primary sludges. Alum-primary and ferric-primary sludges were produced in parallel trains of a pilot plant operated using a municipal wastewater. Each chemical treatment unit was operated under several coagulant doses during the four phases of this study resulting in the production of several chemical-primary sludges with distinct characteristics. Gravity thickening and dissolved air flotation thickening results for each chemical-primary sludge are presented. Gravity thickening was evaluated using continuous, pilot scale gravity thickeners; dissolved air flotation thickening evaluations were performed using batch, benchscale equipment. Sludge dewatering evaluations were performed for all chemical-primary sludges using a pilot scale bowl centrifuge, vacuum belt filter and filter press. The report presents correlations developed relating performance of each unit operation to specific characteristics identified for each chemical-primary sludge. An economic analysis of centrifugation and vacuum belt filtration of each chemical-primary sludge is presented.
"Envirotech Corporation." "July 1979." Includes bibliographical references. "Contract no. 68-03-0404."