Abstract: In this thesis, sewage purification treatment system PLC control system, with the rapid development of the city, environmental issues become increasingly important. Sewage damage to the environment is an important factor, the current Chinese sewage purification treatment automatic control system is relatively backward, the high cost of water purification, sewage purification station discharge treated effluent water quality is unstable, so how to establish an effective automatic control system, optimization operating results, is of great significance. The system includes monitoring configuration and design ladder design aspects, to achieve automatic control of wastewater treatment in smaller cities and remote monitoring. System consists of PLC, level sensors, intake pump, decanter, into the mud pumps and mud pumps, divided into manual and automatic control mode, use the ladder language to complete on-site control system; use MCGS monitoring group state monitoring interface software design, simulation demonstration system can not only working conditions, but also work on-site real-time monitoring, and remote control systems, complete automatic operation SBR wastewater treatment method. When system status, the ability to detect and stop the system, maintenance, reduce the incidence of accidents in the sewage treatment process.
Keywords: PLC; sewage treatment system; MCGS configuration; PLC control
