硅橡胶膜渗透蒸发去除水中VOC性能的研究刘青鑫

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(VOC),VOC。VOC、、、〔1-2〕。。,VOC,、、(PV)、、〔3-4〕。,PVVOC、,。VOCVOC,,[M].:,2002:18-23.[5],,,.:,200810117545.5[P].2008-12-24.[6].[M].4.:,2002:211-281.StudyontheremovalcapacityofVOCfromwaterbypervaporationprocessthroughasiliconerubbermembraneLiuQingxin1,LiJinlong2,SuiGuozhe2(1.MethanolRefinery,DaqingOilfield,Daqing163411,China;2.CollegeofChemicalEngineering,QiqihaerUniversity,Qiqihaer161006,China)VOC1,2,2(1.,163411;2.,161006)[](VOC)。、、VOC。,VOC2.0×10-4、70cm3/min,90%,50cm3/min,72%,。,VOC。Henry。[];;;[]TQ085+.411[]A[]1005-829X(2010)06-0044-04Abstract:TheremovalcapacityofVOCfromwaterbypervaporationprocessthroughasiliconerubbermembranehasbeenstudied.Theeffectsofwaterfeedingvolumn,feedingtemperature,theexistenceofdissolvedgasandwa-tervaporinfeedingliquidontheremovalefficiencyofVOCareinvestigated.Theexperimentalresultsshowthatthere-movalefficiencyofbenzenecouldreach90%,whenthefeedingconcentrationofVOCgasinthesolutionis2.0×10-4,andfeedingvolumnofflowis70cm3/min.Buttheremovalefficiencyoftolueneisonly72%whenfeedingvolumnofflowis50cm3/min.And,theremovalefficiencyofVOCincreaseswiththeincreasesoffeedingtemperature.Theexistenceofdissolvedgasenhancestheremovalefficiencyofthemembrane,buttheexistenceofwatervaporde-creasesthepermeationcoefficientofVOCgas.BasedonthecalculationmodelofHenrycoefficient,aprettygoodpredictionontheexperimentalresultshasbeencarriedthrough.Keywords:volatileorganiccompounds;pervaporation;siliconerubber;hollowfibermembrane[](LC2009C09)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!30620106IndustrialWaterTreatmentVol.30No.6Jun.,2010[](1982—),2008,。:022-26689183,E-mail:zh-xcf@163.com。[]2010-02-25()44——2010-06,30(6),VOC。,VOC。,K.Jian〔5〕/。S.V.Ho〔6〕,Q.Liu〔7〕。VOC。、(2.0×10-4)VOC,、VOC。,。11.1VOC1。15L、15L、VOC1L、。32mm,300015.1cm。0.37m2,340μm,60μm。(20~150cm3/min)VOCVOC2.0×10-4,24hVOC。()VOC。。。,8×10-62×10-7。VOC,10%,O28×10-7N21.5×10-6。,VOC,293K,1.7~2.0kPa。,293~306K,,2L。1~3h。1.2VOC2。()、、。5.2cm,0.081m2,20μm,190μm,150μm。0.06%~0.8%。,1L/min。293K()0.4kPa。,,。FIDTCD(GC-SP6890,)、。22.1VOC293K3。3,100cm3/min,2.07×10-43.7×10-5;30cm3/min,;,:VOC45——2010-06,30(6)70cm3/min,90%。,,。40cm3/min,2.0×10-4,。,5×10-63.5×10-5。。293K4。4,50cm3/min,72%。,,。5。5,,。,,306K,。,。2.2,VOC3:(1);(2)VOCHenry,VOC-;(3)。2.2.1,Hausen〔8〕。VOCDABWilke-Chang〔9〕。,50cm3/min,30%。2.2.2HenryVOC。Henry,VOCVOC,(1)。PVOC=Hx(1):H———Henry;PVOC———VOC,kPa;x———VOC,mg/L。HenryA.Ito〔10〕。Henry,Henry。293K,、Henry0.0061、0.0021kPa·L/mg。2.2.3,,6。6,VOC0.0014,0.000141。,0.0016,0.000654。。Q。-46——2010-06,30(6)[](1976—),2000,。:0459-5536839,E-mail:liuqingxin23@126.com。:,E-mail:jinlong141@163.com。[]2009-12-30()、-。VOC。7。7,,1kPa,。。(2%~3%)VOC(0.1%),VOC。,VOC。2.2.4VOC,。xi、yi,Phi、Pli,LiVi,Qi,Aiδ,。(dLi/dA)=(Qi/δ)(Phi-Pli)(2)(dVi/dA)=-(dLi/dA)(3)yi=Vi/ΣVi(4)xi=Li/ΣLi(5)dLi/dA。、〔11-12〕。VOC、、(1)。,3~5。3VOC。,,VOC,VOC。,。,。Henry。[][1]LinekV,SinkuleJ,JandaV.Designofpackedaerationtowerstostripvolatileorganiccontaminantsfromwater[J].WaterResearch,1998,32(4):1264-1270.[2]YuJJ,ChouSY.Contaminatedsiteremedialinvestigationandfeasibilityremovalofchlorinatedvolatileorganiccompoundsfromgroundwaterbyactivatedcarbonfiberadsorption[J].Chemosphere,2000,41(3):371-378.[3]vanderBruggenB,VandecasteeleC.Removalofpollutantsfromsurfacewaterandgroundwaterbynanofiltration:overviewofpossibleapplicationsinthedrinkingwaterindustry[J].Environ.Pollution,2003,122(3):435-445.[4]PengMing,VaneLM,LiuSX.RecentAdvancesinVOCsremovalfromwaterbypervaporation[J].J.Hazard.Mater.,2003,98(1/2/3):69-90.[5]JianK,PintauroPN,PonangiR.Separationofdiluteorganic/watermixtureswithasymmetricpoly(vinylidendfluoride)membranes[J].J.Membr.Sci.,1996,117(1/2):117-133.[6]HoSV,SheridanPW,KrupetskyE.Supportedpolymericliquidmembraneforremovingorganicsfromaqueoussolutions.Transportcharacteristicsofpolyglycolliquidmembranes[J].J.Membr.Sci.,1996,112(1):13-27.[7]LiuQ,NobleRD,FalconerJL.Organics/waterseparationbypervaporationwithazeolitemembrane[J].J.Membr.Sci.,1996,117(1/2):163-174.[8]AnthonyLH,MaddoxRN.Masstransfer:fundamentalsandapplications[M].PrenticeHallPTR.,1984:83.[9]SeaderJD,HenleyEJ.Separationprocessprinciple[M].2nded.NewYork:JohnWiley&Sons,2005:211.[10]ItoA,YamagiwaK,TamuraM,etal.Removalofdissolvedoxygenusingnon-poroushollow-fibermembranes[J].J.Membr.Sci.,1998,145(1):111-117.[11]LiJinlong,ItoA.Dehumidificationandhumidificationofairbysurface-soakedliquidmembranemodulewithtriethyleneglycol[J].J.Membr.Sci.,2008,325(2):1007-1012.[12]SuiGuozhe,LiJinlong,ItoA.SeparationofVOCvaporfromairbyasurface-soakedliquidmembranemoduleusingtriethyleneglycol[J].Sep.Puri.Tech.,2009,68(2):283-287.,:VOC47——

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