Filter media treatment of a fluid flow to remove colloidal matte

Details Filter media treatment of a fluid flow to remove colloidal matte Filter media treatment of a fluid flow to remove colloidal matte

1993-03-19

1994-12-20

Nessler, Cynthia L.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210669, 210679, 210723, 210504, 210506, 502402, 502407, C02F 128, C02F 154

Patent

active

053743571

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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