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ETV REPORT - PHYSICAL REMOVAL OF CRYPTOSPORIDIUM OOCYSTS AND GIARDIA CYSTS IN DRINKING WATER AQUASOURCE NORTH AMERICA ULTRAFILTRATION SYSTEM A35 AT PITTSBURGH, PA. - NSF00/07/EPADW395
Citation:
ETV REPORT - PHYSICAL REMOVAL OF CRYPTOSPORIDIUM OOCYSTS AND GIARDIA CYSTS IN DRINKING WATER AQUASOURCE NORTH AMERICA ULTRAFILTRATION SYSTEM A35 AT PITTSBURGH, PA. - NSF00/07/EPADW395. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-03/010.
Description:
Verification testing of the Aquasource Ultrafiltration Treatment System Model A35 was conducted from 12/1 - 12/31/98. The treatment system underwent microbial challenge testing on 1/22/99 and demonstrated a 5.5 log10 removal of Giardia cysts and a 6.5 log10 removal of Cryptosporidium oocysts. Source water characteristics were: turbidity average 0.078 Nephlometric Turbidity Units (NTU), pH 8.5, and temperature 8.0C. During the thirty-day verification test, the system was operated at a flux recommended by the manufacturer of 112 liter per square meter per hour (1/m2/h) (65.9 gallon per square foot per day [gfd]) at 8.0C which equates to 155 l/m2/h at 20C (91.2 gfd at 68F). The average transmembrane pressure was 0.65 bar (b) (9.4 pounds per square inch [psi]). The feed water recovery of the treatment system during the study was 94%. Chemical cleaning of the treatment system was conducted as part of the verification testing.