SeriesNo.294December 2000 金 属 矿 山METALMINE 总第294期2000年第12期* (96014511)。,,,110006139#。 ,,,。··电场强化十字流膜滤的研究进展*李海波 徐新阳 胡筱敏 罗 艹倩(东北大学) 。,。 十字流膜滤 膜污染 电场流场特性AdvanceintheResearchofIntensifyingCrossFlowFilteringbyElectricFieldLiHaibo XuXingyang HuXiaomin LuoQian(NortheastUniversity)Abstract Themainchallengesincrossflowfilteringarefilmcontaminationandconcentrationdifferencepolariza-tion.TheresearchofintensifyingcrossflowfilteringmadebothinandoutsideChinaarereviewedandthebasicprincipleandtheresearchofcrossflowfilteringunderthefunctionofelectricfieldaredescribed.Keywords Crossflowfilmfiltering,Filmcontamination,Electricfield,Flowfieldcharacteristics ,20,,、、、、、、、、,[1、2],,。1 。,。,,、[1、3]。1930Morton(CrossFlow)[4],,“”,。,,,,;1964Kasspar,。,,,。,,,,[5]。,。,,,,。,,。,。1.1 Belfort[6],,,。VanderWaal,:,·27·[7]。Colman,[8]。L.G.Wenten,,,100~300kPa,,100%[9、14]。,。1.2 ,,,。。[3]:,,。[10],Taylor,。,Taylor。1.3 1959,Bier,1969Moulik[1],、。1994J.Jurado[11],1992E.S.Tarleton、、[12]。R.J.Wakeman-[13]:,,,1/6。(ElectrocrossflowFil-tration/ECFF),,,,。2 ECFF“”E.Manegold,,1959Bier,,。2.1 ECFF,,,“”,,,,;,,“”,(electroosmosisfluxeffect),,。1[1]。1 ,、、、,,,,。2。,,,,,。,,,。,。2 2.2 ECFF,ECFF[1]:J=■P/RT,(1),J,■P,RT。·28·总第294期 金 属 矿 山 2000年第12期RT=Rf■P+RM+RC,(2),Rf,;RM;RC,。ECFF3[17],,、,;,,。,(2)3,。,3(b),,。3 ECFF(a)-;(b)-2.3 ECFF,ECFF:。ECFF,,SiO2,1[15]。50.5V/cm。E,,4;,E100V/cm,。,,,,,。1 /(V·cm-1)01733.335066.684/mm0.660.340.110.0100 :0.05%(W),0.12MPa,361L/hECFF。J.Jurado(BSA)[11],,,:1%BSA,125V/cm、2~4.5Hz,10;;25。ECFF:J=J0+μEE,(3),J0;μE(cm/s×cm/V)。(3),Jurado:J(Ci)J(1)=1-0.173ln(CiC1),(4),Cii;J(Ci)i。Jurado,,。E.S.Tarleton、,[12]:,。:ν=2εδE3μ,(5),ε,δZeta,μ,E。,Tarletonr、εpεfFe:Fe=2πγ3εf(εp-εf)εp+2εf(E2),(6),(E2),εpεf,。0.1m/s,140kPa,0.6%,50V/cm,:,,,10~14。,。TarletonWakeman,:,ECFF,ECFF,2。2 /(kW·m-2)/(kW·m-3)19.639.39.126.1 :1.4%·29· 李海波等:电场强化十字流膜滤的研究进展* 2000年第12期WakemanTarleton:,,。WakemanTarleton[16],,,。,,,,:,。D.Henry[17],ECFF,,(2)3,,,EEc,。:J=■P■Pkln(CSCB)+μEE+R0M1+KMR0ME■P,EEC(7)μEEkln(CS/CB),KME■P/R0M,(7):J=ME+M0,(8),MM0。(8):,。HenryECFF。,ECFF,。,,。,,,。3 ,,,,,。,。,ECFF,,。,,ζ、Henry;;N-S;Tay-lor;ECFF。ECFF,,ECFF。 1 ,..:,19972 ..:,19983 ,..,1994(3):1~54 Morton.Methodoffiltering.USPatent,No.1762560,June10,19305 ,..,1998(2):30~366 GBelfortetal,Thebehaviorofsuspensionandmacromoleculesolu-tionincrossflowmicrofiltration,MemSci,1994(96):1~587 VanderWaaletal,Masstransferincorrugates-platmembranemodulesⅠ.MemSci,1989(40):243~2608 ColmanDAetal,Enhancedmasstransferformembraneprocess.TransInstChemEng,1991(69):91~989 LGWentenetal,Mechanismsandcontroloffoulingincrossflowmicrofiltration,Filtration&Separation,Mar,1995:252~25310 ..,1998.411 JJuradoetal.Applicationofelectricfieldsandvortexmixingforenhancedultrafiltration.Filtration&Separation,May,1994:273~28112 ESTarleton,Theroleoffield-assistedtechniquesinsolid/liquidseparation.Filtration&Separation,May/June,1992:246~28113 ESTarleton,RJWakeman,Electro-acousticcrossflowmicrofil-tration.Filtration&Separation,Sep/Oct,1992:425~43114 MStumpe,BRedekerandUWerner.Theusesofelectrostaticin-teractionstoimprovethebackflushingeffectincrossflowmicrofil-tration.Filtration&Separation,June,1993:331~33515 ,..,1998(1):3~816 RJWakeman,ESTarleton.Membranefoulingpreventionincross-flowmicrofiltrationbytheuseofelectricfields.CheEngSci,1987,Vol42,No4:829~84217 JosephDHenry,JRLeeFLawlerandCHAlexKuo.Asolid/liq-uidseparationprocessbasedoncrossflowandelectrofiltration.AICheJournal,1997,Vol23,No6:851~859(收稿日期2000-10-18)·30·总第294期 金 属 矿 山 2000年第12期