APPARATUS FOR SEWAGE PURIFICATION Russian patent published in 1996 - IPC

FIELD: liquids purification from different kind impurities, sewage purification using active sludge both in aerobic and anaerobic conditions. SUBSTANCE: apparatus for sewage purification using active sludge has body with bottom, circulation pipe with open upper and lower butts and made in the form of pipe suction pump mounted along axis of circulating pipe and connected to it by holders. Lower butt of circulation pipe is mounted over bottom of body with some space. Suction pump is also spaced from walls and upper and lower butts of circulating pipe. EFFECT: increased productivity due to increased defectiveness of micro organism life activity. 3 cl, 2 dwg