Two phase anaerobic digester system

Details Two phase anaerobic digester system Two phase anaerobic digester system

1977-05-04

1982-03-09

Marantz, Sidney

Chemistry: molecular biology and microbiology

Apparatus

Bioreactor

48 61, 48197A, 210631, C02F 328

Patent

active

043189938

ABSTRACT:
A two phase anaerobic digestion process in which an initial phase continually receives an organic feed for short detention times of less than two days under conditions which efficiently liquefy and breakdown the feed to lower molecular weight acids and other intermediates for conversion to methane. A succeeding phase is operated to treat the lower molecular weight acids and intermediates for detention times of about two to about seven days under conditions which efficiently lead to production to methane. The feed is loaded in the first phase at rates from about one to about ten pounds of total organics per cubic foot per day; and the products from the initial phase are loaded in the succeeding phase at rates of about 0.1 to about 0.5 pounds total organics per cubic foot per day.

REFERENCES:
patent: 1750267 (1930-03-01), Harrison
patent: 2847352 (1958-08-01), Delacommune
patent: 3032476 (1962-05-01), Sher
patent: 3057785 (1962-10-01), Olsen
patent: 3146677 (1963-12-01), Stich
patent: 3622465 (1971-11-01), Orgel et al.
Pohland et al., Environmental Letters 1(4), 255-266 (1971).
F. G. Pohland and S. Ghosh, Biotechnol. & Bioeng. Symp., No. 2, 85-106 (1971).

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