Disposal of paper pulp mill sludge

Details Disposal of paper pulp mill sludge Disposal of paper pulp mill sludge

1976-07-01

1977-06-21

Corbin, Arthur L.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Including recovery of organic by-product

162 29, 162 39, 162 72, 162DIG9, 210 4, 210 5, 210 6, 210 7, 210 15, 210 66, 210 68, D21C 322, D21C 1100, C02C 510

Patent

active

040309681

ABSTRACT:
A process for the disposal of paper pulp mill sludge by incorporating the sludge in the digestion step of a wood pulping operation without detrimental effects on the quality of the pulp obtained. In one aspect, the sludge is surplus sludge which is obtained from a system which microbiologically purifies spent wood pulping liquor by aeration and sedimentation.

REFERENCES:
patent: 1743080 (1930-01-01), Bradley et al.
patent: 3025151 (1962-03-01), Berg et al.
patent: 3402125 (1968-09-01), Tanaka
patent: 3444076 (1969-05-01), Sekikawa et al.
patent: 3737374 (1973-06-01), Stern et al.
patent: 3806448 (1974-04-01), Smith et al.
patent: 3876497 (1975-04-01), Hoffman
Biological Treatment of Sewage & Industrial Wastes, vol. I, McCabe, p. 350, 1955, Gp.170.

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