Filtration of giardia cysts and other substances, volume 1: Diatomaceous earth filtration
The effectiveness of diatomaceous earth filtration of drinking water was studied under various operating conditions for removal of Giardia lamblia cysts, total coliform bacteria, standard plate count bacteria, turbidity, and particles. Hydraulic loading rates imposed were 2.44, 4.88, and 9.76 m/hr (1, 2, and 4 gpm/ ft2) . Seven grades of diatomaceous earth were used. Temperatures ranged from 5° to 19°C, and concentrations of Giardia cysts and bacteria were varied over two or more log cycles. Giardia lamblia is a protozoan prevalent in the clear, cool waters characteristic of the Rocky Mountain ...
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