SEWAGE AND WASTEWATER PHOSPHORUS REMOVAL SYSTEM AND METHOD

摘要

PURPOSE: A phosphorus removal system of wastewater and a removal method thereof are provided to use biological treatment processes of the wastewater including a settling tank, a flow control tank, and other tanks. CONSTITUTION: A phosphorus removal method of wastewater comprises the following steps: inserting drugs into a drawing line during a sludge drawing process inside a settling tank(50), for forming sludge with high concentration phosphorus inside settling tank sludge; transferring the sludge drawn from the settling tank to a concentration tank(70), using a line mixer; inserting air to the line mixer, for promoting the reaction of the sludge and the drugs; compress-precipitating the sludge inside the concentration tank, and returning surface water to an anoxic tank(20); and discharging the surface water after a biological treatment.