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9PES/PANMBR*201620-,(PES)、LiCl、(PVP)N,N-DMAcPES(PAN)PES/PAN。25℃90KPaPES/PAN、PESPES222L/(m2·h)130L/(m2·h)82L/(m2·h)。。MBRPES/PAN、PESPES0.2559L/(m2·h·min)、0.3366L/(m2·h·min)、0.3539L/(m2·h·min)PES/PANMBR15dPES/PAN、PESPES83.75%、63.58%、61.32%PES/PANPES。/X703Adoi10.3969/j.issn.1003-6504.2010.09.0331003-6504(2010)09-0159-05MembraneFoulingMechanismandAnti-foulingPerformanceofPES/PANMembraneinMembraneBioreactorQIUHeng,WANGYong-hui,XUEGang*,LIUZhen-hong,MINHao,HEJinSchoolofEnvironmentalScienceandEngineering,DonghuaUniversity,Shanghai201620,ChinaAbstractPolyethersulfone(PES)membranewaspreparedbyliquid-solidphaseinversionmethodwithPES,LiCl,polyvinylpyrrolidone(PVP)anddimethylacetamide(DMAc).Andpolyacrylonitrile(PAN)wasaddedintothesystemtopreparePES/PANmembrane.ThewaterfluxofPES/PANmembrane,PESmembraneandPESultrafiltration(UF)membranewereabout222L/(m2·h),130L/(m2·h)and82L/(m2·h)respectivelyundertheoperationalconditionsof25℃and90KPa.Accordingtoresultsofmembraneresistancedeterminationinamembranebioreactor,itwasfoundthatmembranefoulingwasmainlyattributedtoconcentrationpolarizationlayerandgellayer,andduringalongtermoperation,membraneholeblockagewasthereasonforresistanceaddition.InMBRthedecayratesofmembranefluxofPES/PANmembrane,PESmembraneandPESultrafiltration(UF)membranewereabout0.2559L/(m2·h·min),0.3366L/(m2·h·min)and0.3539L/(mm2·h·min)respectively,themembranefluxofPES/PANmembranedecreasedmostslowly.AftermembranesraninMBRfor15d,bychemicalcleaning,purewaterfluxrecoveryrateofPES/PANmembrane,PESmembraneandPESUFmembranewereabout83.75%,63.58%and61.32%respectively,withpurewaterfluxrecoveryrateofPES/PANmembraneasthemaximumandanti-foulingperformanceofPES/PANmembranebetterthanPESmembrane.KeywordsPES/PANmembrane;membranebioreactor;membraneresistance;anti-foulingperformance2009-07-152009－09－08NECT-07-0175;107046;08JC14005001987-,()13816753863Hengqiuqiu@126.com;*13671611264xuegang@dhu.edu.cn。EnvironmentalScience&Technology33920109Vol.33No.9Sept.2010(PES),、、、,[1]、PES(MBR)。(PAN),。PES[2]PANPES。,(MBR)、,(、、)MBR[5]。,33。:[4-5],,,、MBR[6][7][8]。PES、PES/PAN、PES。11.1(PESRADELA-100)(PAN)74000(PVPK30)44000-54000,LiClN,N-DMAcPES。1.2/PH-140(A)THZ-031JSM-5600LAR1140-()JY-82。1。19.625cm2。MLSS8000～10000mg/L,8h。1.312%PESN,N-DMAc1%LiCl9%(PVP)()60℃(70℃)24h-[7]PES22℃40℃0.2~0.3mm2min40℃5%N,N-PES/PAN24h。3%PANDMAcPES/PAN。1.4,25℃、90KPa[10][11]JY-82,JSM-5600LV。1.525℃、90kPaMBRPES/PAN、PESPES,m。lgJt=lgJ1-mlgtJttL/(m2·h)tminmL/(m2·h·min)。1.6、、。。Rt=Rm+Rc+RifRtRmRcRif。。DarcyJ=△PμRt=△Pμ(Rm+Rc+Rif)25℃,μ=8.90×10-4Pa·sμ=3.32×10-3Pa·s。J0J1J2L/m2·h△P16093RcRif。PANRm、Rc、Rif、RtPESPESPESPESPAN。2.2.225℃90kPaRt1012m-11012m-11012m-11012m-1(%)PES4.1142.493.9650.56100PES2.8122.001.8826.69100PES/PAN1.625.800.437.85100RmRcRif(%)8.1310.5320.64(%)84.0482.4373.89(%)7.837.045.473(24h)Table3Thefiltrationresistanceofthreekindsofmembranesandtheproportion(runningfor24h)PAN—CN≡N—CN≡NPES。[12]。1PES/PANPESPESPESPES/PAN。2PES/PAN、PESPESPES/PANPES/PANPESPES。2.22.2.125℃90kPaJ0MBR24J1J22、3。MPa。J0=△PμwRmJ1=△PμRt=△Pμ(Rm+Rc+Rif)J2=△Pμw(Rm+Rif)Rm=△PμwJ01Rt=△PμJ1=Rm+Rc+Rif2Rc=△PμJ1-△PμwJ23Rif=△PμwJ2-△PμwJ04。22.125℃90kPa、、1。PES/PAN、PESPES2。Pr(%)JW(L/m2·h)r(μm)θoPES76.282.640.07376PES78.3129.800.21773PES/PAN87.6222.250.306531Table1PropertiescomparisonofthethreekindsofmembranesL/m2·hJ0J0J0PES88.611.9345.11PES129.383.6677.62PES/PAN222.3812.43177.582(24h)Table2Fluxofthreekindsofmembranes(runningfor24h)16133。5RtRc。RifRif。。2.32.3.1MBR25℃90kPaMBRPES/PAN、PESPES24h3。3MBR200min。10hPES/PANPESPES。310h4PANPES。4PES/PAN、PESPES0.2559L/(m2·h·min)、0.3366L/(m2·h·min)、0.3539L/(m2·h·min)PES/PAN。PESPESPES/PAN。PES/PAN。PES/PANPESPESPES/PAN。2.3.225℃90kPaMBRPES/PAN、PESPES15d8h8h1hMBR15dPESPES/PANJ0MBR16d8h8h1hJ1J24、5。4MBRPANPESL/m2·hJ0J1J2PES86.581.7816.51PES130.563.2027.43PES/PAN224.7311.7292.164(16d)Table4Fluxofthreekindsofmembranes(runningfor16d)Rt1012m-11012m-11012m-1(%)PES4.2132.7817.8454.83100PES2.7917.2310.4830.50100PES/PAN1.624.382.338.33100RmRcRif7.689.1519.45(%)59.7856.4952.58(%)32.5434.3627.981012m-1(%)5(16d)Table5Thefiltrationresistanceofthreekindsofmembranesandtheproportion(runningfor16d)1629pH4～524hpH11～1224h24h。。6。6PES/PANPESPES/PANPES。3125℃90kPaPES/PAN222L/m2·hPES130L/m2·hPES82L/m2·h。2MBRPES/PANRm、Rc、Rif、RtPESPES/PANPES。3MBRPES/PANPESPES/PAN、PESPES0.2559L/(m2·h·min)、0.3366L/(m2·h·min)、0.3539L/(m2·h·min)PES/PANPES。4MBR15dPES/PAN、PESPES83.75%、63.58%、61.32%PES/PANPES。[][1],.PES/NMP[J].,2001,21(5):1-6.LiZhan-sheng,JiangCheng-zhang.EffectofnonsolventadditivesonthepropertiesofPES/NMPmembrane-formingsystems[J].MembraneScienceandTechnology,2001,21(5):1-6.(inChinese)[2],,.PVC/PES[J].,2006,29(7):28-30.LiXi-yun,ZhangZhen-jia,QiaoXiang-li.CompatibilitypropertiesofPVC/PESanditsimpactonco-blendultrafil－trationmembrane[J].EnvironmentalScience&Technology,2006,29(7):28-30.(inChinese)[3],,.[J].,2003,21(2):7-9.SunZhen-long,ChenShao-wei,WuZhi-chao.Studyonmembraneperformanceintheoperationofsubmergedmembranebioreactor(MBR)[J].EnvironmentalEngineering,2003,21(2):7-9.(inChinese)[4]PierreLC,TonyAG.Foulinginmembranebioreactorsusedinwastewater