Low effluent pulp mill, bleach plant operation

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Including recovery of organic by-product

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Details

162 29, 162 30K, 162 60, 162 89, 162DIG8, D21C 1112

Patent

active

041882601

ABSTRACT:
A pulp mill bleach plant operation having a low effluent volume, a low consumption of water, energy and chemicals, and yet provides efficient bleaching, caustic extraction and washing is described. Water conservation is practised by controlling the use of wash water in the bleach plant, controlling the design and operation of washers, deckers and other mechanical devices used in the bleach plant and controlling the inflow of water with chemicals. An aqueous polluting effluent-free pulp mill water utilization system is also described.

REFERENCES:
patent: 3764461 (1973-10-01), Baierl
patent: 3764462 (1973-10-01), Baierl
patent: 4039372 (1977-08-01), Reeve et al.

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