An Apparatus for Advanced Wastewater Treatment Using the Intermittent Aeration and Direct Dehydration of Excess Sludge in Oxidation-Ditch

摘要

The subject innovation is to, oxidation ditch reaction vessel (2), the oxidation ditch reaction vessel (2) is abandoned and the ratio giving stirring means to have an aerobic or anaerobic condition (4, 6, 8, 10, 12), the abandoned which waste water flows and non-giving stirring means (4, 6, 8, 10, 12) control means for controlling the operation of the, influent pipe 14 that is installed connected to one side of the oxidation ditch tank (2) flows to and waste water, the oxidation ditch effluent piping 16, which is installed on one side of discharging the treatment of the reaction vessel (2), the precipitation tank for precipitating the activated sludge mixed liquor discharged from the effluent pipe 20 (18), the sludge precipitated in the settling tank (18) oxidation ditch reaction vessel (2) conveying the sludge pipe 22 to provide a path to be returned to the oxidation ditch reaction vessel (2) directly drawn excess sludge pipe 24 to transfer to the activated sludge mixture from the excess sludge pipe (24 ), and an oxidation ditch which includes a dehydrator 26 for dehydrating the sludge transported through the wastewater provides a high processing device. ; According to the present invention, depending on the water temperature and the inlet load variations and waste water using the abandonment and non give stirring means provided in the oxidation ditch reaction tank and control the aerobic and anaerobic conditions, in the oxidation ditch reactor using the screw type dehydrator there is an effect that can be easily controlled by the; (ASRT aerobic solids retention time) to remove the organic material and nitrogen, and phosphorus in waste water by the activated sludge drawn directly dehydrated to solids retention time under aerobic conditions. ; Wastewater treatment apparatus and altitude, oxidation ditch, intermittent giving up, giving up and giving up non-stirring means, screw-type dehydrator, excess sludge