Automatic control system for sewage treatment plant

Automatic control system for sewage treatment plant

The automatic control system of the sewage treatment plant is based on reliable PLC equipment as the control core, and adopts advanced industrial grade computer control system to achieve upper computer monitoring. It is mainly used for production control, operation, monitoring and management of the sewage treatment plant. According to the on-site equipment situation, the control system can include various control subsystems such as lift pump control, grid control, biochemical digestion tank control, fan control, etc., with complete and reasonable control functions. The system networking can determine the most suitable implementation method based on the sewage treatment process, and choose the networking method reasonably to achieve optimized control of the process system. This control system is not only equipped with reliable hardware devices, but also provides powerful, reliable, and user-friendly system software. At the same time, this automatic control system is also equipped with an upper computer monitoring system, installed in the central control room. Workstation computers, network switches, DLP splicing display devices, printers, etc. can be installed according to the on-site situation to display the process flow, set the process electrical parameters, and generate various reports.

The automatic control system of the sewage treatment plant is shown in the following schematic diagram.

System Characteristics

◇ System reliability

The control system can operate stably for a long time in strict industrial environments. The design of system components conforms to true industrial standards, meets domestic and international safety standards, and is easy to configure, wire, maintain, and isolate. The structure is sturdy, corrosion-resistant, adaptable to a wide range of temperature changes, and can withstand the strict requirements of industrial environments.

◇ Fault diagnosis

The control system has a self diagnostic function, which can diagnose whether the system components have faults during operation, and timely and accurately reflect the fault status, fault time, fault location, and related information in the monitoring software. After a system failure, the I/O status returns to the pre-set state according to the process requirements of the system.

◇ Performance of communication system

The control system is an open control system. In addition to having good network communication capabilities, it also has the function of communicating with other control systems and standard external communication interfaces, with no special requirements for network connections.

◇ Scalability and compatibility

The control system has strong scalability, and key components such as the host, power supply, and communication network can all be expanded.