基于plc的污水處理系統(tǒng)畢業(yè)論文

1、i目錄第一章緒論.............................................................................................11.1國內(nèi)污水處理行業(yè)的發(fā)展.............................................................................11.2生活污水的處理工藝..............

2、......................................................................21.3SBR污水處理工藝..........................................................................................31.4本課題研究的主要內(nèi)容.................................

3、...............................................4第二章控制方案.....................................................................................62.1系統(tǒng)的總體設(shè)計(jì).....................................................................

4、.......................62.2工藝及控制要求分析....................................................................................82.2.1格柵池...........................................................................................

5、......82.2.2調(diào)節(jié)池.................................................................................................92.2.3SBR反應(yīng)池池.......................................................................................92.2.4除鹽

6、池.................................................................................................92.3PLC的IO分配.............................................................................................102.4IO設(shè)備確定及PLC的選

7、型.........................................................................112.4.1IO設(shè)備確定......................................................................................112.4.2PLC的選型..................................

8、.......................................................112.5軟件的介紹...................................................................................................12第三章PLC程序設(shè)計(jì)............................................

9、................................143.1系統(tǒng)外部接線圖如圖3.1所示....................................................................143.2程序流程圖如圖3.2所示............................................................................153.3梯形圖

10、如圖3.3所示....................................................................................163.4程序仿真圖及系統(tǒng)說明...............................................................................19結(jié)束語..............................

11、.......................................................................24致謝.........................................................................................................25參考文獻(xiàn)..................................

12、...............................................................26TheSewageTreatmentSystemBasedonPLCAbstractAbstractAlongwithourcountrysurbanizationdrivesmallmediumsizedcities(town)theincreasingnumberofwaterpollutionprobl

13、emsbroughtbytheincreasinglyserious.Sequencingbatchtypeactivatedsludge(hereinafterreferredtoastheSBR)complywithsmalltownsisthebasicrequirementofsewagedisposalbutmustachieveautomaticcontroltoexertitsadvantagesmakeitshaveme

14、broadapplicationprospects.Asautomationtechnologycomputertechnologyunceasingdevelopmentimprovethelevelofautomationsewagetreatmentplantsalsoincrease.withitsmaturetechnologyofPLCcontrollerversatilityhighreliabilitygoodflexi

15、bilityexpconvenientinstallationperfmancetopricehigherseriesofadvantagesinindustrialcontrolaregettingmemewidely.ThisarticlemainlyintroducedthesewagetreatmentplantinautomaticcontrolsystemcompositionfunctionhowtomakeuseofPL

16、Cautomaticcontrolintroducesthesystemimplementationproblemsencounteredtheirsolutions.InsewagetreatmentusingPLCcontrolsystemafterthetransfmationimprovethereliabilityoftheautomaticcontrolnotonlyreducethelabintensityofthewke