APPARATUS FOR SEWAGE BIOLOGICAL PURIFICATION Russian patent published in 1996 - IPC

FIELD: concentrated by biological impurities sewage complex purification. SUBSTANCE: tower type three stage sewage purification apparatus has vertical body-aerotank with aeration chamber and central guiding pipe. Chamber of secondary settling is made in the form of vertical column-aerotank with module of settling members in its upper part. During third stage of deep treatment of water in vertical tower-aerotank lower zone of clarification with settling members is combined with upper zone of third stage mineralization. Apparatus has following blocks of feeding sewage, air, aeration, recirculation and disinfection. Upper part of aeration chamber has coaxially mounted to body built-in bioreactor-settler with fiber-bristling biofiller and with located on axial air pipeline reactor aerator with distributor-deflector. Ring type space between body and bioreactor is filled with filtering grain-porous bioloading, mainly claydite. Settling members of module present tier set of sheet-type truncated cones, that are uniformly embracing ring-type collector of clarified water, formed by beadings and axial pipe of module with tubular water distributors in its upper end. EFFECT: increased productivity. 6 cl, 5 dwg