Research On Automatic Contral System Of Integrated Sewage-Processing Device

The integrated equipment, which is used in sewage-processing, aggregates the characteristics of both the SBR and the method of active sludge-processing. It specially suits for processing the sewage in mining areas. The system which functions periodically must be installed with advanced automatic control system. By this method, operation and management systems can be simplified at the greatest extent, and the quantity and quality of sewage can be insured after processing. This subject analyzes the fundamental construction, the technology characteristics, the designing parameters, the operating modes, the main mechanical devices, the measuring appliances and their position installed. And it also provided configuration table of devices and configuration software such as PLC control system, computer and simulating screen. Consequently, the automatic degree and performance are improved.The function of central computer includes a lot of functions such as monitoring, controlling, malfunction alarming, safe landing, tabling, drawing trend-figure, modeling figure and helping etc. This subject also provided the general view schedule of PLC's input and output signals, the table of PLC's I/O addresses, the distribution tables of TIM/CN areas, DM areas and procession-controlling channel and the dictionary of central computer's sign name.The subject stresses the compensating measure of the control system when the malfunctions take place, which will reduce the loss and ensure the safe production. So it has great practical applying value and spreading value.