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Removing Arsenic with a Softening/RO Combo
Citation:
SORG, T. J. Removing Arsenic with a Softening/RO Combo. WATER TECHNOLOGY. National Trade Publications, Inc., Latham, NY, 31(3):3 p., (2008).
Impact/Purpose:
In October 2001 when USEPA announced it was revising the arsenic maximum contaminant level (MCL) from 50 µg/L to 10 µg/L, it also proposed a research program to conduct a series of full-scale, on-site demonstrations of arsenic removal technologies. With USEPA budget and Congressional add-on funds ammounting to around $20M, the Agency has funded 50 demonstration projects in 27 different States during the past six years. The main objectives of the program are to evaluate system performance, to characterize residuals produced and to determine the capital and operation and maintenance (O/M) costs of the technology being demonstrated. The technologies demontrated have consisted of adsorptive media (10 different media products), iron removal, anion exchange, coagulation/filtration and point of use (POU) reverse osmosis (RO).
Description:
This paper provides a very short summary of the arsenic demonstration program and the limited test results from the point-of-use (POU), reverse osmosis (RO) project in Homedale, ID. Preformance data is presented on the effectiveness of the POU treatment system to remove arsenic, uranium and nitrate from the source water and the concentration of these contaminants in the RO reject water.
