Design And Application On Control System In Waste Water Treatment

In the era of economic stride development,today's society have to face the serious pollution of water resources present situation,through the establishment of a series of water pollution prevention and control project implementation,the present situation of water pollution has been a lot of links and improve,but compared with foreign advanced technology,the research of automatic control system we have a long way to catch up.Sewage treatment not only to the environment have played an important role in improving,and sewage after treatment to achieve discharge standard,implementation of water resources to use again,thus water use efficiency maximization goal.Study a reasonable sewage treatment automatic control system,the first thing to satisfy the requirement of the national emissions,and with a low operating cost,in order to achieve better treatment effect.A high degree of automation control system can also be late for maintenance in industrial production cost savings.This article is on the sewage treatment system is the basis of theoretical research and analysis,according to the ? Discharge standard of pollutants for municipal wastewater treatment plant? GB8978-1996 on the sewage treatment system,the relevant provisions of the combination of chaoyang share food factory sewage treatment requirements for the?Design and application of control system in waste water treatment?.Automatic control system of the control effect is directly related to the quality of the sewage treatment and speed.Through the analysis of the research to the SBR sewage treatment technology,this system using industrial computer as the upper machine,the Siemens PLC-300 as controller,and form a PROFIBUS network link up and down a machine.In the upper machine,through WinCC configuration software to make the operation and display screen,the next bit machine,the use of Siemens Step7 programming software of sewage treatment system decontamination machine,aerator,decanter and other equipment of automatic starting,automatic stop,fault alarm and parameter display program.Finally using S7-PLCSIM software program for the simulation,the results show that program can meet the requirements of sewage automatic control system.In the operation of the test at the scene debugging,sewage treatment control system automatic control part meet the requirements of the safety and reliability,to achieve the desired results..