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ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, REMOVAL OF ARSENIC IN DRINKING WATER: ADI INTERNATIONAL INC. ADI PILOT TEST UNIT NO. 2002-09 WITH MEDIA G2®; PHASE II
Citation:
NSF INTERNATIONAL. ENVIRONMENTAL TECHNOLOGY VERIFICATION REPORT, REMOVAL OF ARSENIC IN DRINKING WATER: ADI INTERNATIONAL INC. ADI PILOT TEST UNIT NO. 2002-09 WITH MEDIA G2®; PHASE II. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-05/073, 2005.
Impact/Purpose:
Inform the public
Description:
Verification testing of the ADI International Inc. Unit No. 2002-09 with MEDIA G2® arsenic adsorption media filter system was conducted at the Hilltown Township Water and Sewer Authority (HTWSA) Well Station No. 1 in Sellersville, Pennsylvania from October 8, 2003 through May 28, 2004. The source water was groundwater from Well No. 1, one of HTWSA's three groundwater supply wells. The treatment unit feed water for the verification test was withdrawn from an on-site chlorine detention tank, which contained groundwater that had been disinfected with sodium hypochlorite. Verification testing was conducted under manufacturer-specified operating conditions. The feed water, with an average total arsenic concentration of 21 µg/L and a pH of 7.6, was treated with sulfuric acid to lower the pH to 6.4 prior to the treatment unit. When operated under the manufacturer's specified conditions for this site and at the design flow rate of 1.7 gpm, the ADI International Inc. Unit No. 2002-09 with MEDIA G2® system reduced the total arsenic concentration from an average of 21 µg/L in the feed water to an average of 7 µg/L in the treated water.