Process for the anaerobic decomposition of organic substrate

Details Process for the anaerobic decomposition of organic substrate Process for the anaerobic decomposition of organic substrate

1985-04-19

1986-12-09

Wyse, Tom

Liquid purification or separation

Processes

Treatment by living organism

210150, C02F 328

Patent

active

046279172

ABSTRACT:
This invention relates to a process and device for anaerobic decomposition of organic substrate in which organic substrate to be treated is passed in a downflow mode through a reactor (1) having a filter bed therein as a carrier for settling microorganisms. The substrate treated in filter bed (3) is partially recycled by a recycle pipe 4 from the bottom to the top of reactor (1). Produced digester gas is drawn off by a gas outlet (9) at top of reactor (1). To maintain a high volume load and to achieve high operational stability, it is provided that a partial stream of substrate treated in filter bed (3) is passed in an upflow mode through a riser pipe (11) to effect further degradation of residuals and is drawn off at the top of reactor (1) by means an outlet (10) directly from the riser pipe (11).

REFERENCES:
patent: 3371033 (1968-02-01), Simmons et al.
patent: 4256573 (1981-03-01), Shimodaira et al.
patent: 4351729 (1982-09-01), Witt

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