PLC for industrial wastewater treatment system, provides effective control method Industrial control -

At present, the most sewage treatment control system automation level is not high, low security, mismanagement, efficiency is generally lower than the world standard. Sewage treatment system of aeration process control, data communication and management is a main problem needed to resolve. Sewage treatment automatic control system is relatively backward in China, sewage treatment cost remains high, sewage plant emissions of treated sewage water quality is not stable, so how to establish an effective control system, optimize the running effect, reduce the operation cost, is of great significance.

a, PLC controller system: PLC controller is short for programmable logic controller, use it as controller of processing system, realize the function of the control system, also can use the computer as the upper machine, through the network connection to PLC, real-time monitoring of production process and its characteristics are as follows: easy to programming, development cycle is short, easy to maintain. Strong commonality, easy to use. Control function is strong. Modular structure, strong ability to scale. Therefore widely used in wastewater treatment.

guangxi liuzhou sewage treatment project control objects including into Wells, coarse grid, improve pump room, fine grille, aerated grit chamber, blower room, biochemical reaction tank, two sink the pond, such as ultraviolet disinfection cabinet, the channel, each key control areas are required to test parameters such as liquid level, temperature, PH value.

second, the general block diagram of control system:

industrial wastewater treatment system of electrical control system block diagram as shown in the above, PLC as the core controller, through the test operation panel button input, input of all kinds of sensors, and the analog input, complete a run, stop and speed control of the equipment.

control requirements and process, the control system by combining the field control and remote control way, by Siemens S7 - at the scene 300 host + IM177A + OYES 200 series modules for data acquisition and control of water pump, door lock, such as motor, and then by DP bus and located in the central control room building engineer station communication, is equipped with industrial PC, PC software based on configuration kai-fa wang to monitor the control parameters and remote control. Flow chart is as follows:

3, project control system features: 1, using IM177 DP IO extension module, extensible 32 sub-stations, scalability is very strong.

2, OYES 200 series PLC controller anti-jamming is strong, the whole system is stable and reliable.

3, OYES 200 series product variety, convenient configuration and selection of customers.

4, system fault self-diagnosis function, in a timely manner to eliminate the problems that arise in the operation of the guarantee the reliability of the system is running.

5, Siemens 300 host + OYES 200 series of products, stable and reliable, high cost performance.

4, summary: from a variety of factors such as environmental protection, water injection, very necessary for industrial wastewater treatment. Therefore, the effective combination of the present state of the latest technology, measurement testing instrument use technology, PLC control system, will be for the current industrial sewage treatment control system provide effective control method.

PLC technology zone a waterworks, the application of PLC in jiangxi province for industrial wastewater treatment system, provides effective control method is the more the letter OYES 300 PLC application in a domestic steel pipe production line PLC application in the tunnel kiln temperature control system in PLC application in rotary screen printing machine
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