The Research On The Monitoring System Of Sewage Treatment Plant Based On King Scada

China is a dry and water shortage country. Total freshwater amount is2.8trillion cubic meters, which is6%of the global water resources. And it is afterBrazil, Russia and Canada, the forth in the world. But per capita has only2200cubic meters, only a quarter of the average of the world and1/5of the UnitedStates. It is121th in the world, so we are one of the13countries whose water ofper capita are poorest. Based on the fact of that the global water can’t change,sewage treatment has become an effective method of resolving the problem ofthe lack of water resources.This paper from sewage treatment method and process of bungalows sewagetreatment plant in the SBR activated sludge process by the method of CASS(Theabbreviation of Cyclic Activated Sludge System, this article as a CASS), throughto several other commonly used wastewater treatment process research theadvantages of clear CASS process.Pingfang sewage treatment plant the CASS process cover an area of an areasmall, reaction pool focus, but the corresponding automatic control system of thedemand is higher, this paper is combined with CASS process characteristics,choose the Siemens S7-400PLC as a series of automatic control systembungalows sewage treatment plants the hardware structure, the system adoptsdouble CPU redundant system, double communication module system, ensurethat appeared in an accident, the automatic control system has a CPU and totalcommunication module normal work, this has greatly increased the sewagetreatment plant security and stability. This paper has S7-400double controllerredundancy system in sewage treatment plant of the automatic control system toleave in front.In this paper the design of automatic control system by using optical fiberring network in the form of communication and data exchange, each productionworkshop equipment running status and real-time data can be passed the light signal transmission to the central control room in the upper machine, the systemto facilitate the manufacturer operation, in every workshop and established thesub control station, really consistent with the superior monitoring, lowerimplement sewage system of automatic control principle. This system used bythe king scada monitoring software, previously only in xian city fifth sewagetreatment plants use, which is the first in the three northeastern provinces.