Process for biological purification of liquid wastes

Details Process for biological purification of liquid wastes Process for biological purification of liquid wastes

1978-05-09

1980-12-02

Castel, Benoit

Liquid purification or separation

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

Responsive to fluid flow

210 16, 210 17, 435813, 435819, 435183, C02F 304

Patent

active

042370035

ABSTRACT:
An improved process for biological purification of liquid wastes is provided. The improvement is obtained by utilizing anaerobic bacteria in the presence of extra-cellular enzymes produced by Gram-positive bacteria and separated from said Gram-positive bacteria and the intra-cellular enzymes contained therein. As compared to the current technique the anaerobic process according to the invention may produce only 0.2% of sludge, while the retention time may be only 25% of the time currently used.

REFERENCES:
patent: 1751459 (1930-03-01), Simmer
patent: 3617541 (1971-11-01), Pan
patent: 3801499 (1974-04-01), Luck
patent: 3994780 (1976-11-01), Klass et al.
patent: 4088571 (1978-05-01), Helgesson
El-Sayed, Refaat M., "Biologically Active Filter Combined with Enzyme Treatment", A.I.Ch.E. Symp. Series, vol. 73, (167), pp. 166-171, (Mar. 1977).

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