882640

AWWA JAW46167

Journal AWWA - Reliability of Surrogates for Determining Cryptosporidium Removal

Journal Article by American Water Works Association , 05/01/1997

Li, Sylvana Y.;Goodrich, James A.;Owens, James H.;Willeke, Gene E.;Shaefer, Frank W. III;Clark, Robert M.

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Testing of field-scale bag filtration systems yielded results indicating that 4-6 um polystyrene microspheres can be used as a reliable surrogate for determining Cryptosporidium oocyst removal in bag filtration processes. A nearly perfect linear correlation was observed between log removals of 4-6 um polystyrene microspheres and Cryptosporidium parvum oocysts. The correlations between Cryptosporidium removal and other potential surrogates (including 4-6 um particle counts, 1-25 um particle counts, and turbidity) produced slopes that were substantially >1 and may vary geographically because of variations in raw water quality. The similarities and dissimilarities in log removal between Cryptosporidium oocysts and the potential surrogates for the bag filtration system resulted from their differences in size distribution. Includes 17 references, tables, figures.
 

Product Details

Edition:
Vol. 89 - No. 5
Published:
05/01/1997
Number of Pages:
10
File Size:
1 file , 990 KB
Note:
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