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RECORD NUMBER: 1147 OF 1214

OLS Field Name OLS Field Data
Main Title Treatment of arsenic residuals from drinking water removal processes /
Author MacPhee, Michael. ; Charles, G. E. ; Cornwell, D. A.
Other Authors
Author Title of a Work
Charles, Gail, E.
Cornwell, David A.
Sorg, Thomas J.
CORP Author Environmental Protection Agency, Washington, DC. Office of Research and Development.;National Risk Management Research Lab., Cincinnati, OH.
Publisher U.S. Environmental Protection Agency, National Risk Management Research Laboratory, Office of Research and Development,
Year Published 2001
Report Number EPA/600/R-01/033
Stock Number PB2002-103682
Subjects Arsenic--Waste disposal. ; Arsenic--Environmental aspects.
Additional Subjects Arsenic residuals ; Drinking water ; Water treatment processes ; Ground water ; Water pollution abatement ; Disposal ; Water pollution plants ; Sludges ; Quality control ; Quality assurance ; Toxicity ; Regulations ; Water sampling ; Federal regulations ; Adsorption ; Precipitation ; Chemical removal(Water treatment)
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=30002GY2.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB2002-103682 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation xi, 87 pages ; 28 cm
Abstract
This report presents the results of a laboratory study to evaluate several potential treatment options to treat residuals produced by five drinking water treatment processes; ion exchange (IE), reverse osmosis (RO), nanofiltration (NF), activated alumina (AA) and iron removal methods. The treatment processes evaluated were precipitation and adsorption. Residuals used in the studies were collected from arsenic removal facilities or from non-arsenic removal facilities whose residuals were spiked with arsenic. The precipitation test results showed that ferric chloride out performed alum generally resulting in arsenic removals of 88 to 99 percent except for the high alkalinity ion exchange residuals whose removal were lower. Best removals occurred at pH 5.0-6.2 and polymer addition typically did not improve removal with either coagulant. Adsorption tests for the removal of arsenic from liquid wastes showed an iron based medial to out perform aluminum based media and ion exchanges resins. Activated alumina and the iron based media provided comparable removals of close to 100 percent with an empty bed contact times of 3-min. Arsenic breakthrough occurred very rapidly for the ion exchange residuals and one RO concentrate both of which had high alkalinity. Of all of the residuals streams tested, the IE regenerants were the most difficult to treat. Toxicity charactistic leaching procedure (TCLP) tests on all final residuals produced including solid media samples by the arsenic removal processes had arsenic results far below the current regulatory limit of mg/L and were generally below 0.5 mg/L.
Notes
"June 2001." "EPA/600/R-01/033." "EPA Contract 8C-R613-NTSA." "Project Officer, Thomas J. Sorg, Water Supply and Water Resources Division, National Risk Management Research Laboratory, Cincinnati, OH, 45268." Includes bibliographical references (pages 59-60). Microfiche.