Filter media treatment of a fluid flow to remove colloidal matter
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United States of America Patent
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Dec 20, 1994
Grant Date -
N/A
app pub date -
Mar 19, 1993
filing date -
Mar 19, 1993
priority date (Note) -
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Abstract
Colloidal matter is removed from a fluid flow by first adsorbing a coagulant onto the surface of a finely divided filter media, and thereafter passing a colloid-containing fluid through the filter media. The adsorbing of coagulant is accomplished with the filter off-line, and it is returned on-line for filtering of the fluid. After the coagulant is adsorbed onto the filter media, it is not necessary to continue feeding coagulant during on-line operation, as the adsorbed coagulant captures the colloidal matter in the fluid and retains it on the surface of the filter media. The captured colloidal matter is removed during back washing of the filter media.
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