Treatment of pulp and paper wastewater with reducing agent and a

Details Treatment of pulp and paper wastewater with reducing agent and a Treatment of pulp and paper wastewater with reducing agent and a

1993-09-01

1994-07-05

Hruskoci, Peter A.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

162189, 210725, 210727, 210736, 210917, 210928, C02F 156

Patent

active

053264797

ABSTRACT:
A process for removing color from a pulp and paper wastewater which comprises the following steps: (a) treating the wastewater with a reducing agent which is capable of inactivating color producing functional groups of the wastewater; and (b) treating the wastewater subsequent to step (a) with a polymer which is capable of removing color from the wastewater.

REFERENCES:
patent: 4668404 (1987-05-01), Walterick
patent: 5200089 (1993-04-01), Siefert et al.

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