PLC (programmable logic controller) control based sewage purification treatment system

The invention relates to a PLC (programmable logic controller) control based sewage purification treatment system. The system comprises a sewage distributing tank (1), an acidic sewage tank (2), an alkaline sewage tank (3), a first settling tank (4), a second settling tank (5), a third settling tank (6), a biochemical treatment tank (7), a clarification tank (8) and a water storage tank (9); by means of the PLC control module, acidic sewage and alkaline sewage are distributed to the acidic sewage tank (2) and the alkaline sewage tank (3) respectively according to PH values of sewage injected into the sewage distributing tank (1), and the proportion of the acidic sewage and alkaline sewage converging in the first settling tank (4) is further regulated according to the PH values of the sewage distributed in the acidic sewage tank (2) and the alkaline sewage tank (3). 本发明涉及种基于PLC控制的污水净化处理系统，该系统包括污水分流池(1)、酸性污水池(2)、碱性污水池(3)、第沉降池(4)、第二沉降池(5)、第三沉降池(6)、生化处理池(7)、澄清池(8)和蓄水池(9)；通过PLC控制模块，根据污水分流池(1)注入污水的PH值，将酸性污水和碱性污水分别分