"中小型污水处理厂自动化监控系统设计及应用"

nt is receiving more and more attention from society. Sewage treatment not only plays a role in environmental protection, but also realizes the reuse of water, saving water resources. In order to improve the quality and efficiency of sewage treatment while saving manpower and resources, it is necessary to design an automated monitoring system. This paper introduces the overall design scheme of the automated monitoring system for small and medium-sized sewage treatment plants. The sewage treatment plant in this design adopts the inverted A²/O treatment process, with a designed sewage treatment scale of 40,000 tons per day. The entire monitoring system is divided into three parts: first, the field data collection part, which completes the data collection function; second, the field control unit, consisting of field control cabinets and PLC stations, the field control cabinets mainly complete manual control, and the PLC station mainly completes data processing, automatic control and communication functions; third, the upper computer monitoring part, which mainly monitors the operating conditions of various process flows on site and implements remote control functions. This paper takes the process flow as the clue, and introduces the overall design scheme of the system, the design of various PLC stations, important parameter monitoring, communication network, and the development of the upper computer monitoring interface. Key words: Programmable Logic Controller, Automation Control, Configuration Software.