Method of purifying effluents from forest industries

Details Method of purifying effluents from forest industries Method of purifying effluents from forest industries

D - Textiles, Paper

21

C

9/36

D21C 11/00 (2006.01) B01J 41/04 (2006.01) C02F 9/00 (2006.01)

Patent

CA 1038562

TITLE OF THE INVENTION " METHOD OF PURIFYING EFFLUENTS FROM FOREST INDUSTRIES " A B S T R A C T In a process for decolouring wood pulp mill effluent, particulary that from the alkaline extraction stage in wood pulp bleaching, by passing the effluent through a bed of an acid activated phenolic anion exchange resin, the formation of channels in the resin bed is minimised and consequently the efficiency of the decolouring improved, by treating the resin bed with an aqueous acid while the effluent is being decolouring in the resin bed.

202221

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