HIGH EFFECTIVE TREATMENT APPARATUS AND METHOD OF SEWAGE AND WASTEWATER

摘要

An advance wastewater treatment system and a treatment method thereof are provided to treat the nitrogen of wastewater up to the target water quality even C/N ration is low and to obtain high efficient removal of nitrogen, phosphorous and organic matter without additional facility. A first anoxic chamber(12) removes nitrate-nitrogen(NO3-N) from wastewater. An aeration tank(13) is connected to the first anoxic chamber, and organics oxidation and nitrification occurs at the aeration tank. A second anoxic chamber(14) is connected to the aeration tank, and the second anoxic chamber additionally removes nitrate-nitrogen(NO3-N) from wastewater. A membrane separation aeration tank(15) is connected to the second anoxic chamber, and the membrane separation aeration tank oxidizes residual organics. Nitrification and the solid-liquid separation in which treated water is separated from microorganism occur at membrane separation aeration tank.