Filtering method of a colloidal solution

Details Filtering method of a colloidal solution Filtering method of a colloidal solution

2006-03-21

2006-03-21

Hruskoci, Peter A. (Department: 1724)

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

C205S500000, C205S747000, C210S638000, C210S639000, C210S721000, C210S724000, C210S748080, C210S754000, C210S756000, C210S778000, C210S791000, C210S903000

Reexamination Certificate

active

07014770

ABSTRACT:
A filtering method is directed to a wastewater of CMP process, which includes sub-micrometer particles suspended as colloid. The wastewater is filtered by a gel membrane formed on a surface of plastic filter. A coagulant or a pH adjuster is added to the wastewater so that the sub-micrometer particles are coagulated to form the gel membrane.

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