PURPOSE: To carry out the methane fermentation of sewage sludge, night soil, etc., by using chaff as the material for fluidizing a methane-producing bacteria carrier and the liq. in a fermenter when methane fermentation of org. matter by the methane-producing bacteria is carried out.
CONSTITUTION: When the methane fermentation by methane-producing bacteria of org. matter (e.g., high-concn. org. waste liq. such as city sewage, night soil, industrial waste water, wastes from agriculture, forestry, stock-breeding, and fishery, etc.) is carried out, chaff is used as the material for fluidizing a methane-producing bacteria carrier and the liq. in the fermenter. Consequently, the methane fermentation of sewage sludge, night soil, high-concn. org. waste liq., wastes from agriculture, forestry, stock-breeding, and fishery, etc., can be efficiently and economically carried out.
TANAKA SHIGENOBU
IKEDA KOJI
