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REMOVAL OF MICROBIAL CONTAMINANTS IN DRINKING WATER: KOCH MEMBRANE SYSTEMS, HF-82-35-PMPW™ ULTRAFILTRATION MEMBRANE
Citation:
NSF INTERNATIONAL. REMOVAL OF MICROBIAL CONTAMINANTS IN DRINKING WATER: KOCH MEMBRANE SYSTEMS, HF-82-35-PMPW™ ULTRAFILTRATION MEMBRANE. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-06/100, 2006.
Impact/Purpose:
to inform the public
Description:
Two Koch Membrane Systems HF-82-35-PMPW ultrafiltration membrane cartridges were tested for removal of viruses, bacteria, and protozoan cysts at NSF’s Drinking Water Treatment Systems Laboratory. The ETV testing was conducted as part of a series of evaluations of the Expeditionary Unit Water Purifier (EUWP), manufactured by Village Marine Tec. The tests reported herein served to demonstrate the performance of the Koch UF used in the EUWP. The HF-82-35-PMPW was operated at a target flux of 40 gallons per day per square foot (gfd). The UF cartridges were challenged with approximately 5 log10 of the bacteriophage viruses fr and MS2, 7 to 8 log10 of the bacteria Brevundimonas diminuta, and 5.7 log10 of live Cryptosporidium parvum oocysts. The bacteria and viruses used in this study served as surrogates for pathogenic bacteria and viruses that may be introduced into drinking water through accidental or intentional contamination. Each challenge was 30 minutes in length. The membranes removed a minimum of 4.8 log10 of the viruses, 6.0 log10 of B. diminuta, and 5.7 log10 of C. parvum.