Waterworks Filter Automation System Design And Key Technologies

Water supply is an important industry concerned with national economy and the people's living. With the development of the society and the improvement of the people's living standard, the higher requirement for the water supply in cities has been put forward, which is not only to meet the need of pressure of pipelines and nets, to ensure adequate water supply, but also to require the obvious improvement of water quality. The filter is the last procedure in which the waterworks deals with water purification facilities, whose function directly effects the quality of the effluent from the waterworks. The back-washing of the filter is complicated in process design. If we still adopt the artificial mode, we will have a heavy labor intensity and a low labor efficiency and it's difficult for us to ensure the safety, so we must transform the automatic system of the filter.Aiming at the filter's automatic transforming items being carried out in Shiyuan Waterworks, and combining with the water characteristic of the Yellow River, the function of the waterworks and other aspects, the article probes into the said waterworks' the overall program design of the filter's automatic control system in detail, which adopts the modular design plan having the instantly controlling function, develops the functions of Configuration Software to the full and makes good use of PID algorithm based on PLC to fulfill the control for constant water level in the filter. The transformed automatic system of the filter can function independently, and in the meanwhile, as a part of the dispatch system, it can demand the dispatcher's office to observe the function of the filter. The filter station can also get the sub-station's information by the net. So adopting the PLC in the series SLC and Configuration King Software, they have designed the monitoring process and fulfilled the integration of...