Method of purifying the waste water of paper mills

Details Method of purifying the waste water of paper mills Method of purifying the waste water of paper mills

1975-04-10

1976-12-21

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 40, 210 33, 162 29, B01D 1506

Patent

active

039987310

ABSTRACT:
The biochemical oxygen demand of waste water from paper mills containing nin and other colloidally dispersed organic contaminants is sharply reduced by adsorption of the contaminants from the acidified waste water by granular alumina. The treatment is most effective at pH 2.5 and when the waste water is acidified with hydrochloric acid.

REFERENCES:
patent: 3346336 (1967-10-01), Hayes
patent: 3625886 (1971-12-01), Mattia
patent: 3763040 (1973-10-01), Timpe et al.

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