C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/56 (2006.01) C02F 1/52 (2006.01) C02F 11/14 (2006.01)
Patent
CA 2368604
The invention is a method for clarifying, dewatering or improving retention and drainage of industrial waste water or paper furnish with an effective amount of at least one dispersion of a water soluble cationic polymer flocculant wherein the improvement comprises the addition of said polymer which has a concentration of at least twenty five percent to said waste water or paper furnish. The industrial waste is preferably food processing waste water, oily waste water, paper mill waste water and inorganic contaminated waste water. The paper furnish may be an aqueous cellulosic suspension.
L'invention concerne un procédé permettant de clarifier, de déshydrater, ou d'améliorer la rétention et l'écoulement d'eaux industrielles ou de compositions de fabrication, et ce à l'aide d'une quantité efficace d'au moins une dispersion d'un floculant polymère cationique hydrosoluble, l'amélioration consistant à ajouter ce polymère, qui présente une concentration d'au moins vingt-cinq pour cent, aux eaux usées ou à la composition de fabrication. Les eaux industrielles sont de préférence des eaux usées de transformation alimentaire, des eaux usées huileuses, des eaux usées de papeterie, et des eaux usées inorganiques contaminées, la composition de fabrication pouvant être une suspension cellulosique aqueuse.
Buelte Rudolf
Johnson Cathy C.
Maury Elise E.
Bcf Llp
Nalco Chemical Company
Ondeo Nalco Company
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