MFCMBR耦合系统中SMP与EPS特性的研究李慧

2013,33(1)49~55ChinaEnvironmentalScienceMFCMBRSMPEPS1,1,2*,1,1(1.,150090,150090)MFCMBR,MBRMFCMBR(SMP)(EPS).MBRSMPTBEPS8.5%9.2%,LBEPS47.9%,LBEPS.MBRMFCMBR,,MBRTMP30KPa38d,MFCMBR55d.MFC.MFCMBRSMPEPSX703.1A10006923(2013)01004907InvestigationonSMPandEPSinmembranebioreactorcombinedwithmicrobialfuelcells.LIHui1,TIANYu1,2*,SUXin-ying1,WANGCui-na1(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China2.StateKeyLaboratoryofUrbanWaterResourceandEnvironment,HarbinInstituteofTechnology,Harbin150090,China).ChinaEnvironmentalScience,2013,33(1)49~55AbstractThisstudyreportedanovelstrategyofintegratingMFCswithamembranebioreactor(MBR)formembranefoulingmitigation.Thesolublemicrobialproducts(SMP)andextracellularpolymericsubstances(EPS)fromthesuspendedsludgeofMFC-MBRcombinedsystemandconventionalMBRwereanalysed.ComparedtotheconventionalMBR,theSMPandTB-EPSconcentrationsintheMFC-MBRcombinedsystemincreasedby8.5%and9.2%respectively.Conversely,theLB-EPSconcentrationdecreasedby47.5%.Inaddition,thearomaticproteinandhumicacidinLB-EPSalsodecreasedsignificantly.ThemembranefoulingwasalsoinvestigatedintheconventionalMBRandMFC-MBRcombinedsystem.ThetimerequiredtoreachaTMPof30kPawas38daysintheconventionalMBRand55daysintheMFC-MBRcombinedsystem,whichindicatedthattherecyclingofthesludgetreatedbyMFCwasabletoalleviatemembranefouling.KeywordsMFC-MBRcombinedsystemSMPEPSmembranefouling(MBR),,,MBR[1].,,.,[23],(EPS)(SMP),EPSEPS(TBEPS)EPS(LBEPS).MBR,EPS,EPSMBR[45],Lee[6]Chang[7]EPS,EPS,EPS20120423(50978071);(2011TS01);(50821002)*,,[e-mail]5033,[89].EPS[10],EPS[11].Li[12]LBEPS,LBEPS,,.EPS,[13]MFC48.0%~64.5%,32.0%~14.5%,36.8%,67%.EPSEPS.MFCMBR,MBREPS,.MBR,MFCMBR,MBR,MBR,MBREPS,MFCMBR.11.11,MBR,MFCMBRMBR,MBR,MBR.8L,,0.1μm,0.1m2,,,MgSO4·7H2OFeCl2·6H2OCaCl2·2H2O.10h40d.MBR,MBR.,,.10100mL.,,,Pt,0.5mg/cm2.5d,MBR200mL2MFC,MFCMBR,MFCMBR.MFCMBRMFC-MBR1MBRMFCMBRFig.1SchematicrepresentationoftheconventionalMBRandMFCMBRcombinedsystem1.2SMPEPS50mL,4000r/min5min,0.45μm(SMP),500.85%NaCl50mL,4000r/min10min,0.45μmLBEPS,0.85%NaCl50mL,8030min,4000r/min15min,0.45μmTBEPS.1.3SMPEPSSMPEPS[14].1MFC-MBRSMPEPS511.4SMPEPS,(GFCWater250),,0.1mol/LNaCl0.002mol/LNaH2PO40.002mol/LNa2HPO4,0.4mL/min.0.45μm.1.5MBRMFCMBRSMPEPS1.2,1cm,(JascoFP6500),,5nm,220~400nm,250~500nm,2nm.22.1MFCMFCSMPEPS,.2MFCMFC,1MFC1000Ω,2MFC,,2MFC5dSMPEPS.2,MFCSMP,LBEPSTBEPS,MFCEPSSMP.SMP7.10,LBEPS11.2%,TBEPS12.2%,MFCSMP6.16,LBEPS21.6%,TBEPS20.7%.EPS.Ramesh[8]EPSSMP,EPS,EPS.MFCEPS,MBRMBREPS,.0100200300400500600700800BABASMPEPS(LB-EPS+TB-EPS)9.366.875.6CC(mg/L)756.7606.3666.30100200300400500600700800CBABCALB-EPSTB-EPS95.174.784.5(mg/L)661.6531.6581.82MFCSMPEPSFig.2TheSMPandEPSconcentrationsoftheMFCtreatedsludgeandanaerobicsludgeA.B.MFCC.2.2MFCMBRTMPTMP(),MBR,,10L/(m2·h),MBRMFCMBR55d,TMP.3,MBR38dTMP30kPa,MFCMBR55dTMP30kPa,MBRMBR,.MBRMFCMBR,MFCMBREPS,MBR,MFCMBRSMPEPS.523301020304050600.000.010.020.030.04MFC-MBRMBRt(d)TMP(MPa)3MBRMFCMBRTMPFig.3TheTMPdevelopmentsoftheMFCMBRcombinedsystemandconventionalMBR2.3MFCMBRSMPEPSMFCMBRMBRMFCSMPEPS,4.4,MFCSMP25~30min,21min13min,MFCSMP,.MFCMBRSMPMBR,,26,27,29min,MFCSMP.MFCLBEPS21min30min,,MFCMBRMBR,33,36,39min,MFCMBRMBR,MFCLBEPS,MBRMBR,MFCMBRLBEPS.TBEPSLBEPS,MFC,TBEPS,MBRMBRTBEPS,MFCMBRMBR.MFCMBRLBEPSTBEPSSMP.51015202530354045(mV)MFC-MBRMBRMFCt(min)05101520SMP51015202530354045t(min)(mV)MFC-MBRMBRMFC05101520LB-EPS51015202530354045t(min)(mV)MFC-MBRMBRMFC01020304050TB-EPS4MFCMBRMBRMFCSMPEPSFig.4GelfiltrationchromatogramsoftheSMPandEPSintheconventionalMBR,MFCMBRandMFCMFCMBRSMPEPS,MFCMBRMBRSMPEPS,,5.5,MBRMFCMBRSMP8.5%,EPS,1MFC-MBRSMPEPS53MFCSMP,2,MFCSMP6.2,46%56%.MBR,MFCMBRSMPMBR.EPSLBEPSTBEPS,MBRMFCMBRLBEPS47.9%,TBEPS9.2%,MFCMBRLBEPSTBEPS.01020304050607080EPS(mg/gMLSS)SMP(mg/L)EPS(LB-EPS+TB-EPS)SMP19.117.675.401020304050607080BABA75.301020304050607080ABBALB-EPSTB-EPS6.312.1EPS(mg/gMLSS)69.163.35MFCMBRMBRSMPEPSFig.5TheSMPandEPSconcentratesintheMFCMBRandconventionalMBRA.MFCMBRB.MBRTBEPSEPS,,,,,LBEPSTBEPS,,,,,,,.MBR,,LBEPSTBEPS[15].Ramesh[16]LBEPS,MFCLBEPS,.2.4MFCMBRMBRSMPEPS6MFCMBRMBRSMPLBEPSTBEPS.CHEN[17],5(Region),.,6,SMP(Ex/Em:260~285/320~360),(Ex/Em:200~250/410~50),(Ex260,Em385).MBR,MFCSMP.MBRLBEPS(Ex/Em:260~285/325~375220~240/330~380),(Ex/Em:220~240/280~320),(Ex/Em:260~280/460~470),MFCMBRLBEPS(Ex/Em:260~285/325~375220~240/330~380)(Ex/Em:220~240/280~320),MBR,MFCMBRLBEPS.TBEPS,(Ex/Em:260~285/325~375220~240/330~380)(Ex/Em:220~240/280~320),LBEPS,MFCMBRMBR.[18]SPSSLBEPS,TBEPS,MFCMBRLBEPSTBEPS.5433250300350400450500220240260280300320340360380400SMP(MBR)Em(nm)Ex(nm)0100200300400500600650250300350400450500220240260280300320340360380400Ex(nm)Em(nm)0100200300400500600650SMP(MFC-MBR)250300350400450500220240260280300320340360380400Em(nm)Ex(nm)LB-EPS(MBR)0100200300400500600250300350400450500220240260280300320340360380400LB-EPS(MFC-MBR)Ex(nm)Em(nm)0100200300400500600250300350400450500220240260280300320340360380400Ex(nm)TB-EPS(MBR)Em(nm)0100200300400500600700750250300350400450500220240260280300320340360380400Ex(nm)Em(nm)TB-EPS(MFC-MBR)01002003004005