As a process unit with very large energy consumption in the Shrimp Farming Aerators Manufacturers activated sludge process, controlling aeration redundancy is an effective means to reduce the cost of sewage treatment. At the same time, the improvement of frequency conversion accuracy can effectively reduce the redundancy of aeration volume and achieve the purpose of energy saving in the aeration system. In the process of processing analog signals by the central processing unit, by introducing control, it has higher control accuracy than conventional automation control programs. At present, most domestic sewage treatment plants and stations still use manual control aeration systems, and some use automatic control aeration systems. On the basis of summarizing the characteristics of the existing control methods, this system uses an online fluorescent dissolved oxygen meter to feed back dissolved oxygen signals in real time. The state's investment in the construction of rural environmental protection infrastructure has increased year by year. In addition, the dissolved oxygen value is usually adjusted by changing the aeration volume of the biochemical tank.Aquatic aerator tells that the activated sludge method is one of the widely used methods in domestic sewage treatment. In addition, the system can effectively reduce aeration redundancy and has obvious energy-saving effects, which helps to reduce the operating cost of rural water treatment and environmental protection facilities and ease local operating cost pressure. In recent years, the Ministry of Environmental Protection has successively carried out continuous improvement of rural environment and comprehensive improvement of rural environment across the country, and the number of rural domestic sewage treatment facilities and treatment capacity have been significantly improved. Such as influent water quality, sludge concentration, water temperature, air pressure, etc. However, there are two issues worth discussing: For some rural domestic sewage treatment facilities with strict discharge standards, the professional level and practical experience of the operators need to be improved, which is one of the potential factors affecting the stability of the facilities' compliance with the standards; the level of urban and rural economy still exists Differences, the daily operating costs of environmental protection facilities have put pressure on local governments, and the phenomenon that they can be built and cannot be used still exists