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第61卷第3期化工学报Vol.61No.32010年3月CIESCJournalMarch2010檭檭殐檭檭檭檭殐檭檭殐檭檭檭檭研究简报檭殐檭电去离子集成过程分级浓缩与纯化电镀镍漂洗废水王玉珍王建友卢会霞王少明董恒(南开大学环境科学与工程学院天津300071)关键词:电去离子;电镀废水;镍离子中图分类号:TQ028.8文献标识码:A文章编号:0438-1157(2010)03-0754-07犛狌犮犮犲狊狊犻狏犲犮狅狀犮犲狀狋狉犪狋犻狅狀犪狀犱狆狌狉犻犳犻犮犪狋犻狅狀狅犳狀犻犮犽犲犾犲犾犲犮狋狉狅狆犾犪狋犻狀犵狉犻狀狊犻狀犵狑犪狊狋犲狑犪狋犲狉犫狔犻狀狋犲犵狉犪狋犻狀犵犿犲犿犫狉犪狀犲狆狉狅犮犲狊狊狑犻狋犺犲犾犲犮狋狉狅犱犲犻狅狀犻狕犪狋犻狅狀犠犃犖犌犢狌狕犺犲狀犠犃犖犌犑犻犪狀狔狅狌犔犝犎狌犻狓犻犪犠犃犖犌犛犺犪狅犿犻狀犵犇犗犖犌犎犲狀犵(犛犮犺狅狅犾狅犳犈狀狏犻狉狅狀犿犲狀狋犪犾犛犮犻犲狀犮犲犪狀犱犈狀犵犻狀犲犲狉犻狀犵犖犪狀犽犪犻犝狀犻狏犲狉狊犻狋狔犜犻犪狀犼犻狀300071犆犺犻狀犪)犃犫狊狋狉犪犮狋:Successiveconcentrationandpurificationofsimulatednickelelectroplatingrinsingwastewaterwascarriedoutbyintegratingmembraneprocesswithelectrodeionization.Theconcentratecompartmentswerefilledwithionexchangeresinstoenhancetheseparation.TheconcentratestreamoftheprimaryEDIprocedurewasoperatedinclosedcircuitcirculation.Theinfluenceofthevolumetricratioofresinsinconcentratecompartmentsontheseparationwasexamined.Itwasfoundthatthebestperformancecouldbeachievedwhenaniontocationresinratioof6∶4wasadopted.WithfeedNi2+concentrationof50mg·L-1andpHof4.25theNi2+concentrationofeffluentdilutestreamcouldreach2.78mg·L-1whilethatoftheeffluentconcentratestreamwasashighas11171mg·L-1whichgaveaconcentrationratioofhigherthan220.TheeffluentdilutestreamoftheprimaryEDIwasthensenttothesecondEDIstackfordeepdesalting.Diluteproductwithresistivityof1.6—2.0MΩ·cmwasthenobtainedwhichcouldberecoveredaspurewaterforelectroplating.ThemembraneprocessintegratedwithEDIcouldfinditspotentroleforzeroemissionandresourcereuseofheavymetalwastewater.犓犲狔狑狅狉犱狊:elec