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Removal of Microbial Contaminants in Drinking Water: Siemens Corporation Memcor® S10V Ultrafiltration Module
Citation:
Blumenstein, M., B. Bartley, AND J. Q. ADAMS. Removal of Microbial Contaminants in Drinking Water: Siemens Corporation Memcor® S10V Ultrafiltration Module. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-09/110, 2009.
Impact/Purpose:
To inform the public.
Description:
The Siemens Memcor S10V UF module was tested for removal of endospores of the bacteria Bacillus atrophaeus and the MS2 coliphage virus according to the requirements of the EPA Long-Term 2 Enchanced Surface Water Treatment Rule (LT2ESWTR). B. atrophaeus served as a surrogate for Cryptosporidium oocyssts, as well as other bacteria. Five modules from five different production lots were challenged with both organisms. Separate challenges were conducted for each organism. The modules were operated at a target flux of 80 gallons per square foot per day (gfd), which for the S10V equates to approximately 16.7 gallons per minute (gpm). The LT2ESWTR specifies that log removal values (LRV) be calculated for each module for each organism, and then one LRV for each organism (LRVC-TEST) be assigned for the set of LRV. However, the rule does not specify how the LRVC-TEST should be determined, instead, three different methods are suggested. All three methods were used to assign LRV for this verification. See the Verification of Performance section below for descriptions of each method. The LRVC-TEST for each method is presented in Table VS-i. Table VS-i. LRVC-TEST for Each Organism Challenge Organism Method 1 Method 2 Method 3 B. atropheus 7.10 7.13 6.62 MS2 2.98 3.00 2.57
URLs/Downloads:
REMOVAL OF MICROBIAL CONTAMINANTS IN DRINKING WATER: SIEMENS CORPORATION MEMCOR S10V ULTRAFILTRATION MODULEETV VRVS Website