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RECORD NUMBER: 24 OF 1057

OLS Field Name OLS Field Data
Main Title Analysis and Assessment of Incinerated Municipal Sludge Ashes and Leachates.
Author Theis, T. L. ; McKiernan, M. ; Padgett, L. E. ;
CORP Author Notre Dame Univ., IN.;Municipal Environmental Research Lab., Cincinnati, OH.
Year Published 1984
Report Number EPA-R-806690; EPA-600/2-84-038;
Stock Number PB84-155563
Additional Subjects Sludges ; Ashes ; Solid waste disposal ; Leaching ; Chemical analysis ; Sewage treatment ; Incinerators ; Physical properties ; Chemical properties ; Toxicology ; Sampling ; Extraction ; Dewatering ; Mutagens ; Metals ; Bioassays ; pH ; Chemical treatment ; Ames assay ; Trace amounts
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB84-155563 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 102p
Abstract
Research was conducted to analyze the physical and chemical properties of ashes from incinerated municipal sludge and of corresponding dewatered sludge. Samples were gathered from 10 wastewater treatment plants ranging in size from 0.22 to 27.1 cu/sec. These samples were subjected to a series of physical, chemical, and biological tests, including batch and chemical extractions and the Ames Salmonella assay. Results showed that the addition of supplemental chemicals during wastewater or sludge treatment strongly influenced the leachate properties and composition of both dewatered sludge and ash samples. In the absence of inorganic chemical addition, incineration acted generally to decrease trace metal availability. The behavior of arsenic during the various leaching tests was the opposite of that for metal cations with respect to pH. Incinerated sludges demonstrated weak mutagenic activity in the Ames assay. Four of the 10 ash samples gave positive results, generally in the presence of activating mammalian enzymes. In addition, one dewatered sludge sample also gave positive results . Both frameshift and base-pair mutagens were implicated.