Staged anaerobic reactor

Details Staged anaerobic reactor Staged anaerobic reactor

1985-10-02

1986-08-05

Castel, Benoit

Liquid purification or separation

Processes

Treatment by living organism

210612, 210619, 210218, 48197A, 435167, C02F 328

Patent

active

046042067

ABSTRACT:
An industrial waste anaerobic digestion process takes place in a digester having separate sections within the digester, in which the acid forming and gas forming phases of the digestion process can occur separately under conditions optimized for each phase. A rotating biological contactor is provided in each section for increasing the liquid/gas interface to facilitate the anaerobic reaction. A series of partitions is provided in each section to create zones in which the waste concentration is extremely high and on which the biota can react at maximal reaction rates. The CO.sub.2 produced in the acid forming phase is used in both acid and gas forming sections to mix and achieve pH adjustment, and the methane can be used in the gas forming sections for mixing. A thermophilic chamber in the center of the tank is surrounded by the mesophyllic chamber to minimize and utilize conductive heat loss.

REFERENCES:
patent: 2315577 (1943-04-01), Bach
patent: 4022665 (1977-05-01), Ghosh et al.
patent: 4067801 (1978-01-01), Ishida et al.
patent: 4211647 (1980-07-01), Friedman et al.
patent: 4248972 (1981-02-01), Fischer et al.
patent: 4429043 (1984-01-01), Paton

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