Method for reducing contamination in pulp processing

Details Method for reducing contamination in pulp processing Method for reducing contamination in pulp processing

1987-03-26

1990-07-31

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With washing

162 88, 162190, D21C 902, D21C 910, D21F 166

Patent

active

049448420

ABSTRACT:
Method and apparatus for reducing contamination in processed pulp and in white water effluent discharged from a pulp dryer or paper making mill. The system includes multiple pulp bleaching and washing stages wherein white water effluent discharge from the dryer or paper making mill is fed to the next-to-last washing stage and fresh water is supplied to the last washing stage.

REFERENCES:
patent: 2057059 (1936-10-01), Rue
patent: 3698995 (1972-10-01), Rupson
patent: 3884752 (1975-05-01), Campbell et al.
patent: 3919041 (1975-11-01), Wilder
patent: 4529479 (1985-07-01), Tuomi
patent: 4705600 (1987-11-01), Jacobsen

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