Method for treating pulp-containing waste liquors

Details Method for treating pulp-containing waste liquors Method for treating pulp-containing waste liquors

C - Chemistry, Metallurgy

02

F

362/51

C02F 1/00 (2006.01) C02F 1/52 (2006.01) C02F 1/54 (2006.01)

Patent

CA 1047178

A B S T R A C T This invention provides a process for treating a pulp-containing waste liquor which comprises adding a flocculating agent to the pulp-contain- ing waste liquor and separating and removing the resulting flocculated mat- ter, characterized in that about 1 to about 50 parts by weight, per 1000 parts by weight of the turbid components in said waste liquor, of a dicyan- diamide-formaldehyde resin is admixed with the waste liquor, and then alum- inum sulfate was added to the mixture. The process provides an improved clarifying effect.

219923

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