ANAEROBIC TREATMENT OF ORGANIC WASTE

摘要

PURPOSE:To provide the anaerobic digestion treatment method which can shorten the number of days for digestion and improve a rate of decomposing org. matter by holding a microorganism group at a high concn. in the system of an anaerobic digestion stage. CONSTITUTION:A part 3 of sludge is withdrawn from the anaerobic digestion stage 2 and is centrifugally separated 4 and the concd. sludge 6 obtd. in such a manner is returned to the anaerobic digestion stage 2 at the time of treating org. waste 1, such as excess sludge, in the anaerobic digestion stage 2.