Premium
Controlling Cryptosporidium oocysts Using Conventional Treatment
Author(s) -
Dugan Nicholas R.,
Fox Kim R.,
Owens James H.,
Miltner Richard J.
Publication year - 2001
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.2001.tb09356.x
Subject(s) - cryptosporidium , turbidity , raw water , water treatment , coagulation , filter (signal processing) , microbiology and biotechnology , water quality , biology , environmental science , pulp and paper industry , environmental engineering , medicine , feces , ecology , computer science , computer vision , engineering
Fourteen pilot‐scale tests were performed to assess the ability of conventional treatment to control Cryptosporidium oocysts and three surrogates: turbidity, total particle count, and aerobic endospores. Cryptosporidium oocysts were fed into the raw water at a target concentration of 10 6 /L for 30–71 h in each test. The effects of coagulant type, coagulant dose, raw water quality, filter loading rates, and filter media were evaluated. Under optimal coagulation conditions, conventional treatment achieved more than 4‐log total Cryptosporidium removal, and surrogate log removals were conservative (low with respect to Cryptosporidium ).