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Alternative filtration methods for removal of Giardia cysts and cyst models
Author(s) -
Logsdon Gary S.,
Symons James M.,
Hoye Robert L.,
Arozarena Michael M.
Publication year - 1981
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.1551-8833.1981.tb04655.x
Subject(s) - filtration (mathematics) , turbidity , giardia lamblia , cyst , giardia , water treatment , raw water , filter (signal processing) , environmental science , biology , pulp and paper industry , environmental engineering , microbiology and biotechnology , ecology , mathematics , medicine , surgery , engineering , statistics , electrical engineering
The recent occurrence of waterborne giardiasis outbreaks has spurred renewed interest in water filtration for cyst removal. Studies with cyst models and Giardia muris cysts suggest that properly operated water filtration plants should be able to remove a high percentage of G. lamblia cysts. For effective cyst removal, diatomaceous earth (DE) filters need 1.0 kg/m 2 diatomite precoat plus body feed, and granular media filters require coagulation of raw water and production of filtered turbidity well below 1.0 ntu throughout the entire filter run.