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ETV REPORT - PHYSICAL REMOVAL OF CRYPTOSPORIDIUM OOCYSTS AND GIARDIA CYSTS IN DRINKING WATER, LEOPOLD MEMBRANE SYSTEMS ULTRABAR ULTRAFILTRATION SYSTEM WITH 60 INCH MARK III ELEMENT AT PITTSBURG, PA - NSF/00/10/EPADW395
Citation:
ETV REPORT - PHYSICAL REMOVAL OF CRYPTOSPORIDIUM OOCYSTS AND GIARDIA CYSTS IN DRINKING WATER, LEOPOLD MEMBRANE SYSTEMS ULTRABAR ULTRAFILTRATION SYSTEM WITH 60 INCH MARK III ELEMENT AT PITTSBURG, PA - NSF/00/10/EPADW395. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-03/011, 2000.
Description:
Verification testing of the Leopold Ultrabar Mark III Ultrafiltration Systems was conducted from February 3-March9, 1999. The performance claim evaluated during field testing of the Leopold Ultrabar Mark III Ultrafiltration system was that the system is capable of a minimum 3 log10 removal ofGiardia cysts and 2 log10 removal of Cryptosporidium oocysts. The treatment system underwent microbial challenge testing on 3/19/99 and demonstrateda 4.9 log10 removal of Giardia cysts and a 5.8 log10 removal of Cryptosposidium oocysts. The log 10 removals were limited by the amount of the cysts and oocysts which were present in the stock feed solution, the percentage of the permeate that could be samples, and the percent removery of the analytical mehdology. There were no Giardia cysts or Cryptosporidium oocysts observed in the permeate. Source water characteristics were: turbidity average 0.09 NTU, pH 7.8, and temperature 3.9C. During the 30day verification tst, the system was operated a flux recommended by the manufacturer of 79 gfd at 39F which equates to 128 gfd at 68F (133 liters per square meter per hour (l/m2/h) at 3.9C, 216 l/m2/h at 20C). The average transmembrane pressure was 9.8 psi (9.68b). The feed water recovery of the treatment system during the study was 98%. Chemical cleaning of the treatment system was conducted as part of the verification testing.