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TechniquesofAutomation&Applications|123TechnicalCommunicationsPLCApplicationthePLCTechnologytotheSewageTreatmentandReuseSystemLIYi-qiang(LuodingPolytechnic,Luoding527200China)Abstract:ThispaperpresentstheapplicationofthePLCtechnologytothesewagetreatmentandreusesystem.Thecontrolrequirementsofthesystemarealsointroduced.ThehardwareandsoftwareofthePLCcontrolsystemareoutlined.Keywords:sewagetreatment;PLCcontrol;hardware;software;automation124|TechniquesofAutomation&ApplicationsTechnicalCommunicationsPLCPLCPLCTechniquesofAutomation&Applications|125TechnicalCommunicationsPLC