Record Display for the EPA National Library Catalog
RECORD NUMBER: 185 OF 237Main Title | Sludge conditioning using SO2 and low pressure for production of organic feed concentrate / | ||||||||||||||||
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Author | Weinberg, Myron S. ; Weinber, Myron S. ; Weis, Hans K. ; Palanke, Allen L. ; Sheffne, A. Leonard | ||||||||||||||||
CORP Author | Snell (Foster D.), Inc., Florham Park, N.J. | ||||||||||||||||
Publisher | U.S. Environmental Protection Agency, National Environmental Research Center for the Office of Research and Monitoring, | ||||||||||||||||
Year Published | 1973 | ||||||||||||||||
Report Number | EPA-670/2-73-062; PB223343 | ||||||||||||||||
Stock Number | PB 223 343 | ||||||||||||||||
OCLC Number | 31975087 | ||||||||||||||||
Subjects | Sewage sludge--Conditioning--Costs ; Feeds--Analysis ; Teratogenicity testing | ||||||||||||||||
Additional Subjects | ( Sludge disposal ; Utilization) ; ( Sewage treatment ; Sulfur dioxide) ; ( Feeding stuffs ; Sludge disposal) ; Animal nutrition ; Operating costs ; Filterability ; Sludge drying ; Solubility ; Dewatering ; Cost estimates ; Fertility ; Congenital abnormalities ; Supplements ; Laboratory animals ; Sludge treatment ; Food supplements ; Lactation | ||||||||||||||||
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Collation | xvii, 155 pages : illustrations | ||||||||||||||||
Abstract | Activated sludge from four municipal sewage plants was treated with 0-5% SO2 at pressures of 50-100 psig. The filterability of the treated sludges was improved and the treatment solubilized from 26 to 44% of the initial insoluble solids. The clear, light yellow filtrates were concentrated and then spray-dried to flowable, hygroscopic, tan powders having nutritional value as an animal feed supplement. Capital investment and manufacturing costs for a plant producing a 50% concentrate or dry product were estimated. Effects on reproductive performance of this organic feed concentrate (OFC) were investigated in rats, rabbits and chickens using nutritionally balanced diets. |
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Notes | Technical report. Environmental Protection Agency. Contract Number: Contract #14-12-813 "Project officer Dr. Robert B. Dean." "September 1973." Includes bibliographical references (page 155). "EPA-670/2-73-062." Photocopy. |