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Main Title Arsenic and Nitrate Removal from Drinking Water by Ion Exchange, U.S. EPA Demonstration Project at Vale, Or, Final Report Evaluation Report.
Author L. Wang ; A. S. C. Chen ; A. Wang ; W. E. Condit
CORP Author Battelle Columbus Div., OH.; National Risk Management Research Lab., Cincinnati, OH. Water Supply and Water Resources Div.
Year Published 2011
Report Number EPA/600/R-11/040
Stock Number PB2011-110819
Additional Subjects Drinking water ; Arsenic ; Nitrates ; Removal ; Ion exchange ; Water treatment ; Water sanpling ; Ground water ; Contaminants ; Water supply ; US EPA ; Demonstration project ; Performance evaluation ; Safe Drinking Water Act(SDWA)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB2011-110819 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 138p
As part of the EPA Arsenic Removal Technology Demonstration Program, a 540-gal/min (gpm) ion exchange (IX) system proposed by Kinetico was selected for demonstration at Vale, OR to remove arsenic and nitrate from a groundwater supply to meet their respective maximum contaminant level (MCL) of 10-ig/L and 10-mg/L (as N). This report documents the activities performed and results obtained from a 3.5-year long demonstration study that evaluated the performance of IX technology for arsenic and nitrate removal, determined the required system operation and maintenance (O&M) and operator skills, characterized the residuals produced by the technology, and determined the capital and O&M cost of the technology. This demonstration study was divided into three periods: Study Periods I and II and an interim period between the two. Study Period I (extending from September 19, 2006, through January 14, 2008) evaluated the originally proposed Purolite Arsenex II anion exchange (AIX) resin. Because of its deteriorating performance due to organic fouling and difficulties in restoring its exchange capacity after resin cleaning, a dual resin approach was identified and implemented in the interim period to address the relevant issues. In February 2009, Arsenex II resin was replaced with Purolite PFA300E resin, which was overlain with an organic scavenger, Purolite A850END. The performance of PFA300E/A850END was evaluated in Study Period II from February 10, 2009, through March 22, 2010.