Water clarification

Details Water clarification Water clarification

C - Chemistry, Metallurgy

02

F

362/49

C02F 1/56 (2006.01) C02F 1/28 (2006.01) C02F 1/52 (2006.01)

Patent

CA 1176386

A B S T R A C T "WATER CLARIFICATION" A method for removing suspended impurities and coloured substances from water which is hard and/or has a pH in excess of 5 which comprises contacting the water at its natural pH with a coagulant/adsorbent which comprises a finely divided particulate mineral material, the individual particles of which have a thin hydroxylat- ed surface layer having a positive zeta potential at the adsorption pH, and separating the thus treated water from the coagulant/adsorbent.

400490

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