GE水处理高回收率频繁倒极电渗析EDR脱盐技术.pdf

《GE水处理高回收率频繁倒极电渗析EDR脱盐技术.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、中海油水回用及浓盐水处理技术交流会议高回收率脱盐技术-GE频繁倒极电渗析EDR在废水回用中的应用2011年5月27日北京凯康大厦1/GE/ElectrodialysisReversal（EDR）AnecomaginationcertifiedproductGE绿色创想认证产品电渗析与倒极电渗析电渗析Electrodialysis(ED)Anelectrochemicalseparationprocessinwhichionsaretransferredthroughionexchangemembranesbymeansofa

2、DCvoltage一种电化学分离过程，通过离子在直流电压驱动下透过离子交换膜从而实现分离倒极电渗析ElectrodialysisReversal(EDR)Acontinuousself-cleaningelectrodialysisprocessbymeansofperiodicreversaloftheDCpolarity,switchingconcentratinganddilutingflowstreams一种具有连续自清洁特征的电渗析过程，其通过周期性改变直流电压的极性来实现浓水流与淡水流的周期性切换3/GE/Sli

3、deforPublicDistributionGE/IonicsEDRTimeline发展时间表2007–GEIntroducestheRe-DesignedEDRPlatform1948-Ionicsdevelops1970-IonicsintroducesionexchangemembranesreversalprocesstoElectrodialysis19501960197019801990200020071997–Introductionof1954–EDTechnologyisdevelopedIonicsED

4、R2020System4/GE/BrackishWaterDesalination（咸水脱盐）BWROOnlyEDROnlyBotharepossiblesolutions5/GE/SlideforPublicDistributionTechnologyPerformance:SaltRemovalandRecovery技术表现-脱盐率和回收率TDSRemoved,mg/l25,000SWRO20,000BCEDRisuniquelysuitedtoremovemoderatesalt15,000levelsANDachie

5、vethehighestwaterrecoveryforwaterscarceareas.10,000BWRO5,000EDR1,000EDI(E-Cell)1–10mg/lTDSrange50%75%100%6/WaterRecoveryGE/SlideforPublicDistributionTypicalApplications典型的应用DrinkingWater饮用水IndustrialProcessWater•Reductionoftotaldissolvedsolids工业工艺用水•Removalofnitrat

6、e,fluoride,arsenic,•ReduceTDSpriortoionperchlorate,radiumexchangeMunicipalWastewaterReclaim市政污水回用MassBalanceManagement•CreateIrrigationWatertoreducefreshwaterstress全厂水平衡管理•ForIndustrialMake-upWater•Concentrationofsalt,reducedisposalvolume•Reducemassfluxintoplant7/G

7、E/SlideforPublicDistributionElectrolyticCell电驱元件InasaltbathundertheCathode(-)influenceofdirectcurrent,thecations&anionsmigratetowardstheirrespectiveelectrode.FlowofElectronsThisisthebasisforallNa+electrolyticdrivenprocesses.Cl-8/(+)AnodeGE/SlideforPublicDistributio

8、nElectrodialysis（ED）Cathode(-)-----Na++NaNa+Cation-TransferMembraneNa++DesalinatedProductNa+Cl-Cl-NaCl-ClCl--Anion-TransferMembraneCl-Cl-Na+Cl-Cl