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1、电渗析技术进展学院：轻化与环境工程学院班级：环科11-2学张超号201105011079ProgresselectrodialysisAbstract:electrodialysismembraneseparationtechnologyarewidelyusedinfood,chemical,wastewatertreatmentandotherindustriesoftheseparationandpurificationoftheproductionprocess,highefficiency,cleanandeconomicalenergysaving.Thispaperd
2、escribesthetypesofelectrodialysistechnology,focusesontheprincipleofelectrodialysistechnology,introduceselectrodialysistechnologyinthefoodindustryaswellasappliedresearchinwastewatertreatment,andtheprospectsofitsdevelopmentprospects.Keywords:electrodialysis;film;ApplicationElectrodialysisisunder
3、theeffectofexternalelectricfield,theuseofion-exchangeselectivemembranepermeability,sothationmigrationfromonepartofwatertoanotherpartofthephysicalandchemicalprocessesinwater.Electrodialysis,istheuseofmulti-compartmentelectrodialysisdesalinationprocesstoachievethepurpose.Maincomponentselectrodia
4、lysismembrane,electrodes,clampsorthelikebyapartition,ion-exchangecomposition.Ionexchangemembranesforionswithdifferentchargethroughsexualselection.Yangmembraneallowsonlycations,anionsstopby,overcastmembraneonlyallowsanions,cationsstopby.UndertheinfluenceofanexternalDCelectricfield,ionsinwateras
5、directedmigration.Becauseelectrodialysisiscomposedbymulti-compartment,solightionsmigratetothechamberadjacenttoconcentratecells,allowingsalinewaterdesalination.Inthefoodandpharmaceuticalindustry,electrodialysiscanbeusedtoremoveorganicionsfromtheelectrolytesolution,wheydesalination,desalinations
6、ugarsandaminoacidsaremorerefinedapplicationwassuccessful[1].Asanewelectrodialysismembraneseparationtechnology,innaturalwaterdesalination,seawaterconcentratedsalt,wastewatertreatment,etc.[2]playsanimportantrole,hasbecomeamoresophisticatedwatertreatmentmethods.1.Typeelectrodialysistechnology1.1i
7、nvertedpoleelectrodialysis(EDR)InvertedpoleelectrodialysisEDprincipleisbased,atregularintervals(typically15〜20min),thepositiveandnegativeelectrodepolarityswitchingeachother,dirtcanautomaticallycleantheion-exchangemembraneandtheelectrode
