Design and Application of Sewage Treatment Automatic Control System Based On WebAccess

• 1、College of Electrical Engineering,Hohai University

Abstract：In view of the Taihu basin sewage treatment demonstration project, this article has designed a set of supervisor control and data acquisition system. The chemical technology of sewage treatment uses traditional activated sludge and the advanced membrane structure, achieves advanced level.The system uses PLC to complete data acquisition、logic operation and system control;then takes the internet configuration software WebAccess as the human-machine interface for the surveillance and control of system and the data record; using RS232 bus for communication between the configuration software and PLC; using the shielded wire to realize the data two-way transmission among the devices and PLC. The result of application manifests that the designed system which can the full-automatic movement, monitor various part of movement condition, gathering and the data recording has achieved the anticipated effect.This demonstration project has already been installed in the Wuxi Sewage treatment factory and put into the scientific experiment.It also builds a good example for the similar system.

Keywords： sewage treatment WebAccess SCADA human-machine interface