Treatment of biologically-degradable waste

Liquid purification or separation – Processes – Treatment by living organism

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C02C 102

Patent

active

042305632

ABSTRACT:
Method for treating sewage, wherein sewage is circulated around a system comprising a downcomer and a riser communicating with each other at their upper and lower ends, the downcomer having an upper portion of enlarged cross-section and the riser having a lower portion of enlarged cross-section.

REFERENCES:
patent: 1963354 (1934-06-01), Currie
patent: 3642615 (1972-02-01), Wieferig
patent: 3980556 (1976-09-01), Besik
patent: 4008159 (1977-02-01), Besik
patent: 4045344 (1977-08-01), Yokota
The Condensed Chemical Dictionary, 8th Ed., 1971, p. 382.

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