APPARATUS AND METHOD FOR WASTE-WATER TREATMENT WITH PHOSPHOROUS FILTERING TANK AND SUBMERGED MEMBRANE MODULE

摘要

PURPOSE: A wastewater treatment system and a method thereof using a phosphorus filter tub and a membrane separation device are provided to enable smooth phosphorus release from anaerobic tank and remove most of the phosphorus included in the inflow water by solving the dentirfyed microorganism which can be generated in the denitrifier and organic competition of phosphorus storage microorganism. CONSTITUTION: A wastewater treatment system include a pre-denitrification tub(10), an anaerobic tank(20), a phosphorus filtering tub(30), a first intermittently aerating tank(40) and a second intermittently aerating tank(50). The pre-denitrification tub denitratifies the nitrate nitrogen and nitrite nitrogen including within the wastewater and return sludge. The anaerobic tank release the phosphorus within inflow water by being supplied with a inflow water from the pre-denitrification tub. The phosphorus filter tub collects phosphorus which is released from the anaerobic tank by being including in the end part of the anaerobic tank. The first intermittently aerating tank and the second intermittently aerating tank are successively included in the backend the phosphorus filtering tub. The sedimentation type membrane separation apparatus is included within the second intermittently aerating tank. The sludge emitting the phosphorus within the anaerobic tank and the effluent which the phosphorus is accumulated are provided to the filtering tub and has a media which absorbs and collects phosphorus within the phosphorus filtering tub.