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RELIABILITY OF SURROGATES FOR DETERMINING CRYPTOSPORIDIUM REMOVAL
Citation:
Sylvana, Y. L., J. Goodrich, J. Owens, G. E. Willeke, F. Schaefer, AND R. Clark. RELIABILITY OF SURROGATES FOR DETERMINING CRYPTOSPORIDIUM REMOVAL. Journal of the American Water Works Association 89(5):90-99, (1997).
Description:
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 process. 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 paarticle counts, and turbidity) producted 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 oin size distribution.