The main control objects of the automatic sewage treatment control system are: regulation tank, grille space, sand settling tank, biological reaction tank, biological ponds, pumps in subsystems such as sedimentation tank, chlorine dosing room, sludge dewatering, thickening tank, blower room, etc. Valves, gates, sand removers, grille wells and walking sand suction, sand water separation device. The system can not only centrally control the start and stop of the equipment in the sewage treatment process according to a certain program, time and logic relationship, The system can also collect the water quality of various aspects of sewage treatment by on-line monitoring instruments such as PH meter, dissolved oxygen meter, sludge densimeter, turbidimeter, etc. According to these data, the operation of aeration equipment, dosing equipment, mixing equipment and drainage equipment are controlled automatically, and the effluent quality of sewage treatment plant is monitored. At the same time, the system can monitor the state of the power supply system, statistics the energy consumption of the whole plant, as well as fault diagnosis records, production report records and other functions.
High reliability and high stability: the whole system selects mature products which accord with industrial standard, PLC module has self-diagnosis and fault-tolerant function, PLC control cabinet has perfect anti-interference and lightning protection technical measures; The equipment of the central control room and the local control station has the function of power supply redundancy, and the local control station can complete the basic local control independently in the manual mode even when the upper computer fails or the communication is interrupted.
Openness: the system is open to users. The user can complete the increase or decrease of the equipment, the selection of the control scheme, the expansion and maintenance of the system in a wide range of equipment environment. All the hardware interfaces and software protocols are designed and compiled according to the open standards.
Practical operation: configuration software and programming software are all Chinese interface, rich drawing functions, so that users clearly understand the operation of the sewage treatment plant in each section, the details of the branches of the fault alarm points, The operator can issue various instructions or change the screen only through the mouse, and the user can also access the data of any node in the network through the network of the host computer.Trapezoidal monitoring tools can also monitor industrial Ethernet and even controller network PLC ladder diagram program, without the need for field operation, to achieve a truly seamless connection.