EDI膜堆的稳定运行及再生

EDI1,1,2(1.,100084;2.,300074):EDI,,;,;,15Mcm:EDI;;;:TU991.2:C:1000-4602(2004)11-0058-03StabilizationOperationandRegenerationofMembraneStackofEDIZHANGLi2hui1,LUANZhao2kun1,ZHANGHong2wei2(1.ResearchCenterforEco-EnvironmentalSciences,ChineseAcademyofSciences,Beijing100084,China;2.NorthChinaMunicipalEngineeringDesignandResearchInstitute,Tianjin300074,China)Abstract:Studywasmadeontheeffectofconcentratedwaterdischargemodeandinfluentqual2ityonEDImembranestackoperation,theforcedregenerationofmembranestack,andstabilityincon2tinuousoperation.Theresultshowsthatconcentratedwaterdischargemodeandinfluentqualityhavenoeffectoneffluentquality.However,useofconcentratedwaterrecyclecanresultinthereductionofenergyconsumption.Inthecaseofinfluentmeetingtherequirement,membranestackcanachievesuc2cessfullytheregenerationprocess,withsteadyoperationandresistivityofeffluentover15Mcm.Keywords:EDI;concentratedwaterdischarge;reverseosmosis;forcedregenerationEDI(),,1EDI,1,120mm410mm,3mm,1mm,EDI(25),150400V,24A,0.81.2m3/h,21,24h852004Vol.20CHINAWATER&WASTEWATERNo.111Fig.1Flowchartoftheexperiment2211EDI,,,,,,,300h,,,(15Mcm),400V300V,,,212EDI,,EDI,EDI23,160h(14S/cm),(1545S/cm)2,,3,2A,250350V;2A,100150V2Fig.2Influenceofinletqualityontreatedwaterquality3Fig.3InfluenceofinletqualityontheparametersofEDI,,,213EDI,,,,,;12h952004Vol.20No.11214,750h250400V,24A,1.0m3/h,15Mcm3EDI,,,,,,15Mcm:[1].[J].,2001,21(2):50-56.[2],,,.[J].,2001,17(10):74-76.[3]OrenY,EgozyY.Studiesonpolarityreversalwithcon2tinuousdeionization[J].Desalination,1992,86:155-172.:(010)60212222557E-mail:[e-mail]:2004-07-212004529,,,,,,,,,,,,,,,;,,,,,;,,,,,,,,,,,,,,()062004Vol.20No.11