FLOCCULANT INJECTING APPARATUS FOR WASTEWATER TREATMENT

The present invention relates to an apparatus for injecting coagulant for treating sewage and wastewater which can uniformly mix a coagulant for coagulation treatment of phosphorus in sewage and wastewater within a short time in multiple points and can smoothly inject the coagulant for coagulation treatment of phosphorus in sewage and wastewater without clogging a portion of an injection nozzle caused by scum. According to an embodiment of the present invention, the apparatus for injecting coagulant for treating sewage and wastewater comprises: a compressed air supply line which supplies compressed air; multiple coagulant injection lines comprising a horizontal extension pipe which is branched and connected to the compressed air supply line, a coagulant injection pipe which is horizontally extended while immersed in sewage and wastewater and has multiple injection nozzles arranged at intervals, and a connection pipe connecting the horizontal extension pipe to the coagulant injection pipe; multiple coagulant supply lines which are coaxially arranged in the horizontal extension pipe among the coagulant injection lines and then are extended downwards only to a certain height of the joining pipe; a coagulant equal division supply device which has one side connected to a coagulant supply source, the other side connected to the coagulant supply lines in parallel, equally supplies the coagulant supplied by the coagulant supply source to the coagulant supply lines; and a coagulant injection amount controller which is connected to the coagulant equal division supply device which measures the concentration of phosphorous in each n sample, obtained by sampling the sewage and wastewater for each section, before a coagulation test and the concentration of phosphorous after the coagulation test and controls the amount of coagulant to be supplied to the coagulant equal division supply device. 본 명세서에 개시된 내용은 하폐수 내 인의 응집처리를 위한 응집제가 다지점에서 단시간 내에 균일하게 혼합될 수 있고 하폐수 내의 인의 응집처리를 위한 응집제가 스컴으로 인한 분사노즐 부위의 폐색없이 원활하게 하폐수에 주입될 수 있도록 한 하폐수처리용 응집제주입장치에 관한 것이다. 본 명세서에 개시된 내용의 일 실시예에 따른 하폐수처리용 응집제주입장치는, 압축공기가 공급되는 압축공기공급라인; 상기 압축공기공급라인에 분기연결되는 수평연장관과, 하폐수 내에 침지된 상태로 수평연장되고 다수의 주입노즐이 이격되어 구비되는 응집제주입관과, 상기 수평연장관과 상기 응집제주입관을 연통되게 서로 연결하는 연결관을 구비하는 다수의 응집제주입라인; 상기 응집제주입라인 중 상기 수평연장관 내로 동축배열된 후 상기 연결관의 일정 높이까지만 하부방향으로 연장되는 다수의 응집제공급라인; 일측은 응집제공급원과 연결되고 타측은 다수의 상기 응집제공급라인에 병렬연결되며 상기 응집제공급원으로부터 공급되는 응집제를 다수의 상기 응집제공급라인에 균등하게 분할하여 공급하는 응집제균등분할공급기; 및 상기 응집제균등분할공급기에 연결되고 하폐수를 구간별로 샘플링한 각 n시료의 응집실