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Main Title Evaluation of hot acid treatment for municipal sludge conditioning /
Author McNulty, Kenneth J., ; Malarkey, Ann T. ; Goldsmith, Robert L. ; Fremont, Henry A.
Other Authors
Author Title of a Work
McNulty, Kenneth J.
CORP Author Abcor, Inc., Wilmington, MA. Walden Div.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Available through the National Technical Information Service.
Year Published 1980
Report Number EPA-600/2-80-096; EPA-68-03-2459
Stock Number PB81-144446
OCLC Number 13599899
Subjects Sewage--Purification--Heavy metals removal ; Sewage sludge
Additional Subjects Acidification ; Sludge disposal ; Dewatering ; Cadmium ; Zinc ; Nickel ; Economic analysis ; Metals ; Substitutes ; Capitalized costs ; Operating costs ; Solubility ; Design criteria ; Copper ; Molybdenum ; Sewage treatment ; Sewage sludge ; Heavy metals ; Chemical treatment ; Land disposal
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  TD760.E92 1980y Region 1 Library/Boston,MA 04/29/2016
EJBD  EPA 600-2-80-096 Headquarters Library/Washington,DC 04/05/2016
ELBD ARCHIVE EPA 600-2-80-096 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-2-80-096 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB81-144446 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xii, 162 pages : illustrations ; 28 cm.
Bench-scale tests were conducted to evaluate the technical and economic feasibility of the hot acid process for stabilization/conditioning of municipal sewage sludge. This process involves acidification of the sludge (pH 1.5-3) and heating to temperatures below boiling (approximately equal to C). Test results indicate that the process improves the dewaterability of the sludge, destroys essentially all pathogens, and preferentially solubilizes certain heavy metals relative to nitrogen and organics. The process demonstrated the potential for good solubilization and removal of toxic heavy metals including cadmium, zinc, and nickel with minimal solubilization of nitrogen. Thus the hot acid process improves the desirability of sludge solids for land application. A preliminary economic analysis of the process indicates that it is quite cost-competitive with alterntive stabilization/conditioning processes.
Includes bibliographical references (pages 150-152). Prepared for U.S. Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory, Cincinnati, Ohio, by Walden Division of Abcor, Inc., and Champion International Corporation, Knightsbridge, under contract no. Contract Number: 68-03-2459.