Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...
Patent
1975-12-12
1977-04-26
Bashore, S. Leon
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With regeneration, reclamation, reuse, recycling or...
210 18, 210 40, C02C 502, C02C 510
Patent
active
040199525
ABSTRACT:
Granular .gamma.-alumina in contact with the waste water of paper mills contaminated with oxygen-demanding, organic substances adsorbs the contaminants, particularly ligninsulfonic acids, and lowers the oxygen demand of the waste water much more effectively than activated charcoal, thereby permitting the purified waste to be fed directly to a secondary biological treatment without damaging the microorganisms.
REFERENCES:
patent: 3346336 (1967-10-01), Hayes
patent: 3625886 (1969-02-01), Mattia
patent: 3676334 (1972-07-01), Zuckerman et al.
patent: 3763040 (1973-10-01), Timpe et al.
"Purification of Bleaching Waste Water of the Pulp Industry with Aluminum," loetz Chem. Abstracts, vol. 83, 1975, Effective Date of Article Oct. 1974, (Papier Darmstadt).
Franzen Volker
Hasse, administrator by Adelbert
Ploetz, deceased Theodor
Bashore S. Leon
Berman Hans
Feldmuhle Anlagen- und Produktionsgesellschaft mit beschrankter
Kratz Peter F.
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