Design of Aeration Control System for Sewage Treatment Based on PLC

With the rapid development of China's economy, water pollution has become a major issue that we have to face, especially how to deal with domestic sewage has become the top priority of our daily lives. Although traditional sewage treatment methods can solve the problem of water pollution to a certain extent, the effect is not as good as expected. However, domestic sewage treatment plants basically use the activated sludge sewage treatment process. This process is a dynamic system with multiple inputs and multiple outputs, which has strong coupling, uncertainty, nonlinearity and large hysteresis. And so on, and the modeling of this process is also quite difficult, it is easy to achieve the ideal control effect. Therefore, the in-depth study of the control measures of the aeration system has important historical, practical significance and broad application prospects for its application in the field of sewage treatment. The main purpose of this article is to in-depth discuss the control method of the aeration system of the sewage treatment plant. Through a large number of referenced documents and analyze the operation status of the sewage treatment plant under actual conditions, at the same time, it solves the sewage treatment aeration system in a targeted manner. Technical difficulties such as intermittency, nonlinearity, large hysteresis and linear control variables in the control work are difficult to carry out online detection. The control parameters of each link in the aeration system have been determined, and the simulation simulation of each link of the aeration system has been established. The practice and application of the fuzzy control technology of the air system in the aeration system of the sewage treatment plant and the realization of the fuzzy control strategy on the plc. The experimental research results show that the established inverse control system of dissolved ozone lssvm has good dynamic traceability, high precision, fast speed, good anti-interference ability and good robust characteristics. This kind of dissolved oxygen intelligent control system can realize the stability of the effluent water quality under the restrictive conditions of ensuring that the effluent index is reached, effectively realize the optimization of the aeration energy-saving technology, and reduce the operating cost.