Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1991-07-12
1993-01-12
Hruskoci, Peter
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
162189, 210725, 210727, 210728, 210732, 210734, 210735, 210736, 210908, C02F 156
Patent
active
051787709
ABSTRACT:
A method of treating BCTMP/CTMP wastewater to improve retention and purification of cellulose fiber suspension and clarification of the BCTMP/CTMP wastewater which comprises the addition of a cationic, water soluble coagulant having a molecular weight less than 15,000,000 in an amount of about 1 to about 300 ppm; and a high molecular weight flocculant selected from the group consisting of: nonionic polymers having a molecular weight in the range between about 500,000 to about 30,000,000, low charge cationic polymers having a molecular weight in the range between about 5,000,000 to about 30,000,000, and low charge anionic polymers having a molecular weight in the range between about 5,000,000 to about 30,000,000, in an amount of about 0.1 to about 100 ppm.
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Product Literature--"The Berol Trawl-Method".
Product Literature--"The Berocell Polymer System for Water Clarification", Berol Surface Chemistry Division.
Product Literature--"The Krofta Supracell Zero Velocity Principle of Operation", Krofta Engineering Corporation, pp. 1-7.
Hruskoci Peter
Nalco Canada Inc.
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