SEWAGE WATER PURIFYING APPARATUS Russian patent published in 2003 - IPC

FIELD: equipment for biological purification of sewage water. SUBSTANCE: apparatus has aeration tank with aerators, pipeline for supplying sewage water for purification and pipeline for discharge of purified sewage water, secondary settlers arranged in upper part of aeration tank and made in the form of troughs with longitudinal slot and drain troughs, vertical stabilizing pipes arranged under aeration tank and having length at least half the working depth of aeration tank, aeration chamber, suction pipe positioned in lower part of aeration chamber so that suction pipe does not reach aeration tank bottom. Aerator is positioned inside aeration chamber. Apparatus is further equipped with external chamber and down pipe arranged in lower part of lower chamber and provided with funnel fixed to down pipe end. Baffle is positioned on suction pipe. Pipeline for supplying sewage water to purification equipment is connected to flexible pipeline through two branch pipes equipped at their ends with narrowing heads having curvilinear grooves on their internal surfaces. Turbulators on internal surface of down pipe are made in the form of curvilinear spiral conductors. Slit particle catches arranged on trough edges are made in the form of springy spiral grooves with dovetail-shaped plates inserted inside said grooves. EFFECT: reduced power consumption and improved quality of sewage purification. 4 dwg