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Removal of Microbial Contaminants in Drinking Water: Koch Membrane Systems, Inc. Targa® 10-48-35-PMC™ Ultrafiltration Membrane, as Used in the Village Marine Tec. Expeditionary Unit Water Purifier
Citation:
Blumenstein, M., B. Bartley, AND JEFF Q. ADAMS. Removal of Microbial Contaminants in Drinking Water: Koch Membrane Systems, Inc. Targa® 10-48-35-PMC™ Ultrafiltration Membrane, as Used in the Village Marine Tec. Expeditionary Unit Water Purifier. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-09/075, 2009.
Impact/Purpose:
To inform the public.
Description:
The Koch Membrane Systems Targa 10-48-35-PMC UF membrane module is used for the first treatment step in the US Navy Office of Naval Research’s Expeditionary Unit Water Purifier (EUWP). Two used UF cartridges from the EUWP were tested for removal of endospores of the bacteria Bacillus atropheaus, and Cryptosporidium parvum oocyts in the NSF testing laboratory. B. atrophaeus endospores (approximately 0.8 µm x 1.8 µm) served as a surrogate for pathogenic bacteria. Bacillus endospores were chosen as a challenge organism because field testing of the EUWP also examined endospore removal. The tests were conducted as part of a series of ETV verifications of the EUWP, manufactured by Village Marine Tec. The Targa UF membrane cartridge is used in the EUWP for the Uf treatment step. For this verification, the Targa 10-48-35 PMC cartridges were tested at a target flux of 38 gallons per day per square foot (gfd), which is the target flux of the cartridge in the EUWP. This verification did not address long-term performance, membrane cleaning,, or full-scale field maintenance and operation issues. These items are addressed in the verification reports for the full EUWP system. The UF cartridges ere challenged with approximately 4 log10 per milliliter (mL) of B. atrophaeus endospores, and 5 log10 per liter (L) of formalin-fixed Cryptosporidium parvum oocysts. Each challenge was 30 or 45 minutes in length. The membranes removed a minimum of 2.4 log10 per mL of B. atrophaeus, and 4.3 log10 per L of C. parvum.
URLs/Downloads:
REMOVAL OF MICROB CONTAM IN DW: KOCH MEMBRANE SYSTEMS, INC. TARGA 10-48-35-PMC ULTRAFILTRATION MEMBRANEETV VRVS Website