PVDF管式超滤处理含油废水的膜污染分析郑阳

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Analysisofmembranefoulingofoil-containingwastewatertreatedbyPVDFtubularultrafiltrationZhengYang,XuZhenliang,WeiYongming,FengFei,WuLi(MembraneScienceandEngineeringR&DLab,ChemicalEngineeringResearchCenter,EastChinaUniversityofScienceandTechnology,Shanghai200237,China)PVDF,,,,(,200237)[](PVDF),(AFM)(SEM)PVDF,PVDF,(FTIR)X(EDS)PVDF,。,79.8%。,。[];;;[]X703.1[]A[]1005-829X(2010)09-0028-04Abstract:TheresistanceofPVDFtubularultrafiltrationmembraneusedfortreatingoil-containingwastewaterhasbeenanalyzed.ThePVDFmembranesurfaceisobservedmicroscopicallythroughatomicforcemicroscope(AFM)andscanningelectronmicroscope(SEM).ThesurfaceroughnessandsmoothnessbeforeandafterthemembranepollutionofthenewPVDFmembraneareinvestigated.PollutantsonPVDFmembranesurfaceareanalyzedwithfouriertransforminfraredspectroscopy(FTIR)andX-rayenergyspectrum(EDS).Thetypesandingredientsofthemainpollutantsarediscussed.Theexperimentalresultsshowthattheresistanceaftermembranefoulingismainlycausedbygellayerresistance,whoseproportionisashighas79.8%.Themainingredientsofthepollutantsadheredtothemembranesurfaceareoxygen-containingorganiccompounds.Keywords:PVDF;resistance;membranefouling;organicpollutants,,。,80%〔1-8〕。,。,〔3〕、、、;〔4〕;T.Sato〔5〕;L.Defrance〔6〕、65%、30%5%,;〔7-8〕,Darcy。,。PVDF,(AFM)、(SEM)、(FTIR)X(EDS),,、。30920109IndustrialWaterTreatmentVol.30No.9Sep.,201028——2010-09,30(9)11.1PVDF,1。,,、,。0.7m,0.4m;45m,60L/min,750W;PVDF,0.02μm,66cm,11mm,0.2mm,0.023m2,0.5MPa。、,:COD135.5mg/L,SS9.8mg/L,TOC17.38mg/L,3.45mg/L,33.8mS/cm,pH=6.78,50℃。(1):J=VS×t(1):J———,L/(m2·h);V———,L;S———,m2;t———,h。1.2VeecoMultiMode(AFM),;JEOLModelJSM-6360LV(SEM),,,,;NicoletFTIR,ATR,:4cm-1,750~4000cm-1,32;,,JEOLModelJSM-6360LVSEMEDAXFALCONX(EDS),。22.1PVDFDarcy〔9-10〕。,JΔP,Rt,:J1=ΔPμ×Rt=ΔPμ×(Rm+Ri+Rc+Rg)(2):J1———,m3/(m2·s);ΔP———,Pa;Rt———,m-1;Rm———,m-1;Ri———,m-1;Rc———,m-1;Rg———,m-1;μ———,Pa·s。:40℃,0.1MPa,3.5m/s。4,1。(2)Rm;Ri;Rc;Rg〔11〕。Darcy2。2,Rm17.0%,;Rc2.6%,,;1/(L·m-2·h-1)J01310J1202J2228J31265,:PVDF29——2010-09,30(9)Rg79.8%,,,;Ri0.6%,,,。,,。2.2PVDF3。3,PVDF,;8μm,。2.3,,。4PVDFSEM。4,,,,,PVDF。2.4(FTIR),,5。5,,3300cm-1O-H;2800~3000cm-1C-H;1750~1700cm-1、C=O;1300~1000cm-1C-O。、、。EDS2。2,,CO,33.19%40.14%,85%1%,,、、,。。AlSi,,、。Ca、S、P,,。3(1)PVDF,79.8%。(2)PVDF,,,,,。(3)、、2EDSCONaAlSiPSCa/%33.1940.142.0410.105.992.072.433.1130——2010-09,30(9),CO33.19%40.14%。、、,。[][1].[M].:,2001:287-288.[2],,,.[J].,1996,16(2):25-30.[3],.[M].:,2008:142-144.[4].[M].:,2004:295-296.[5]SatoT,IshiiY.Effectsofactivatedsludgepropertiesonwaterfluxofultrafiltrationmembraneusedforhumanexcrementtreatment[J].WaterScienceTechnology,1991,23(8):1601-1608.[6]DefranceL,JaffrinMY,GuptaB,etal.Contributionofvariousconstituentsofactivatedsludgetomembranebioreactorfouling[J].BioresourceTechnology,2000,73(2):105-112.[7],,.-[J].,2008,28(4):1-8.[8],,.[J].,2008,28(6):14-22.[9]OusmanM,BennasarM.Determinationofvarioushydraulicresis-tanceduringcross-flowfiltrationofastarchgrainsuspensionthroughinorganicmembranes[J].JournalofMembraneScience,1995,105(1/2):1-21.[10]JiraratananonR,ChanachaiA.Astudyoffoulingintheultrafiltra-tionofpassionfruitjuice[J].JournalofMembraneScience,1996,111(1):39-48.[11].[D].:,2003.,:PVDF———.CN101591118···············································,、、、、、,、、。、、、,,,,,,。、、、,,。()[](1985—),。:021-64253792,E-mail:zyzyzy1224@163.com。:,:021-64252989,E-mail:chemxuzl@ecust.edu.cn。[]2010-04-08()《》1981,,。、、、、,、、、、、、。、、,,。、、、。《》,(),。,、、、、、、《》、。《》,,、。《》,16,96,,,,。:ISSN1005-829XCN12-1087/X:6-61:4515MO:10:120:85:300131:022-2651211226678212:022-26512112《》··31——

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