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78Vol．7No．820138ChineseJournalofEnvironmentalEngineeringAug．2013MFC-MBR112*111．1500902．150090MBRMFCEBOM。MFCMBR———MFC-MBRMBRMFC。MBR、。COD94%NH+4-N92%。28%。MLVSS/MLSS80%～88%。LB-EPS48%。2．69×1012m/kg1．67s·L/gMLSS。X703．1A1673-9108201308-2855-06Analysisofperformancesofmicrobialfuelcell-membranebioreactorsystemWangCuina1TianYu12SuXinying1LiHui11．SchoolofMunicipalandEnvironmentalEngineeringHarbinInstituteofTechnologyHarbin150090China2．StateKeyLaboratoryofUrbanWaterResourceandEnvironmentHarbinInstituteofTechnologyHarbin150090ChinaAbstractMembranebioreactorMBRisaneffectiveprocessforwastewatertreatmentwhereastheprocessofmicrobialfuelcellMFCcaneffectivelydegradeextracellularbiologicalorganicmatterEBOMandrecoverelectricity．AnewprocessforcombiningMBRwithMFCswasestablishedtomitigatemembranefoulingandrecoverelectricity．TheexcesssludgeofMBRwastreatedbyMFCsandthenrecycledtoMBR．Thecom-binedsystemwascomparedwiththeconventionalMBRwithrespecttotheperformancesofwastewatertreatmentthemembranefoulingandthecharacteristicsofmixedliquor．Theresultshowedthattheeffluentqualityofthecombinedsystemwasnotdeterioratedsignificantlywithremovalefficienciesof94%and92%forCODandNH+4-Nrespectively．Membranefoulingofthecombinedsystemwasmitigateddramaticallyandthechemicalcleaningcyclewasprolongedby28%．TheratiosofmixedliquorvolatilesuspendedsolidsMLVSStomixedliquorsuspendedsolidsMLSSforthetwosystemswerealmostidenticalintherange80%～88%indicatingthattheinorganicsfromtheMFCsdidnotaccumulateasparticulatesintheMBR．LooselyboundextracellularpolymericsubstancesLB-EPSdecreasedby48%resultingthatthesludgewasmodified．Lowerspecificre-sistancetofiltration2．69×1012m/kgandnormalizedcapillarysuctiontime1．67s·L/gMLSSdemonstra-tedthatthedewaterabilityofmixedliquorinthecombinedsystemwasimproved．KeywordsmembranebioreactorMBRmicrobialfuelcellMFCsludgerecyclingmembranefoul-ingwastewatertreatment2013ZX072010072011DX0120112302110060511210622012－04－182012－05－131987～。E-mailwangcuina0451@163．com*E-mailhittianyu@163．commembranebioreactorMBR。MBR1。MBR7、MBR2。3、、3。SMP、EPS、4。MBRMBR+5TJC-MBR6。microbialfuelcellMFC78。EPS9。EBOMEPSMFC。MFC10。MFCEPSMBRMBR。MBR———11。MFC-MBRMBR123。11．1MFCMFC30%4PTFEPt0．5mg/cm2。55mm×55mm10mm29．39cm240mm118mL。。20±2℃。1MFCMFC。1．2MBRMBRMFC-MBRMBR0．1μm0．1m2。。MBR8L。MBR10d。20±2℃DO3～5mg/L227mg/L、227mg/L、NaHCO3254mg/L、33mg/L、KH2PO415．4mg/L、K2HPO419．6mg/L、MgSO4·7H2O51mg/L、CaCl212mg/L、NH42SO4121mg/L。ZnCl20．13mg/L、FeSO4·7H2O17．5mg/L、PbNO320．27mg/L、MnSO4·4H2O0．13mg/L。28L/m2·h8minON/2minOFFHRT10h。TMP30kPa0．5%NaClO2～8h。1．3MFC-MBRMBR21。MBR200mLSRT40d。10MFC1MBRMFC-MBRMBRMBR2hDOMFCMFC200mLMBR。MFC5d。2MFC15、。1MBRMFC-MBRFig．1SchematicdiagramofconventionalMBRandMFC-MBR1．41．4．1水质分析方法0．45μm。COD、1265828MFC-MBR。1．4．2EPS的提取与分析EPS13。50mL4000r/min5minEPSsolubleEPSS-EPS。50℃0．85%NaCl50mLG-560ScientificIndustriesInc．NYUSA1min4000r/min10minEPSlooselyboundEPSLB-EPS。NaCl50mL80℃30min4000r/min15minEPStightlyboundEPSTB-EPS。0．45μm。1．4．3污泥基本性质的测定MLSSMLVSS14。ZetaELS-ZOtsukaJapan。nor-malizedcapillarysuctiontimenormalizedCSTCSTTYPE304MMLSSNormalizedCST。DSVI50mL100mLSV30DSV30MLSSDSVI。specificresistancetofiltrationSRF15P5000N/m2F0．0064m2。specificoxygenuptakerateSOURMLVSS、t。Mastersizer2000Ltd．MalvernUK0．02～2000μm。distributionspreadingin-dexDSIDSI=d90－d10/2d501d1010%μmd50μmd9090%μm。1．4．4电化学测量MFCVX5100R/C2/UHangzhouChina。1000Ω30h0．4V184h0．3～0．4V54．2mW/m2。MFC10～5000Ω。MFC300～400Ω。22．1MFC-MBRCOD30mg/L94%MBR1。CODMBR。。SMP16。MBR1．089kgCOD/m3·d1．104kgCOD/m3·d2MBRF/M。MFCMBRMBR。MBR92%MBR94%。1MBRMFC-MBRTable1PerformancesofwastewatertreatmentinconventionalMBRandMFC-MBRmg/LMBRMFC-MBRCOD430±30430±30COD50±658±5COD30±431±3NH+4-N26±526±5NH+4-N1．60±1．02．28±1．6NH+4-N1．45±1．12．27±1．4n=15。。SOUR。2MFC-MBRMBRMBR。MFC-MBR。758272MBRMFC-MBRTable2SOURofmixedliquorsinconventionalMBRandMFC-MBRmgO2/gVSS·hMBRMBR11．58810．26417．87964．56249．994MFC-MBR10．2779．76116．42663．18043．2512．2TMP。2MBR0～32d0．0038MPa0．0076MPa390．03MPaMFC-MBR0～37d0．0039MPa0．0073MPa500．0285MPa。28%11d。2MBRMFC-MBRTMPFig．2ProfileofTMPincreasesinconventionalMBRandMFC-MBROgnier217。。22MLSS、MLVSS、Zeta、DSVI、。2．32．3．1污泥混合液的一般性质32MBR8700mg/L。2VSS/SS85%Yasui18。。MBRobservedsludgeyieldYobs0．23gMLSS/gCOD0．20gMLSS/gCOD。MFCMFC。EPS、、、19。S-EPS。MFCS-EPS3。S-EPSsolublemicrobialproductsSMP20。S-EPS21。S-EPS3MBR、MFC-MBR、MFCTable3CharacteristicsofmixedliquorsinconventionalMBRMFC-MBRandMFC-treatedsludgeandanaerobicdigestionsludgeMBRMFC-MBRMFCMLSSmg/L8600±3888860±4728080±4808300±480MLVSSmg/L7454±3167583±3207050±4007000±420VSS/SS%85±384±487±283±2S-EPSmg/L17．6±319．1±3．566．8±875．6±12LB-EPSmg/gSS12．1±2．36．3±1．79．50±310．75±3．5TB-EPSmg/gSS63．3±969．1±1250．87±653．57±7ZetamV－16±4－16±3——DSVImL/gMLSS42±741±5——n=10。85828MFC-MBR。TB-EPSMFC21%16%TB-EPS。LB-EPSMFC21%11%LB-EPS48%。LB-EPSTB-EPS。LB-EPS、22。MFCLB-EPS。LB-EPS。Zeta23。2MBRZeta。MBRMLSS＜10gTSS/LDSVIDSVI。2DS-VI。2．3．2粒径分布3MBR、MFC-MBRMFCFig．3ParticlesizedistributionsofmicrobialflocsinconventionalMBRMFC-MBRandMFC-treatedsludge3MFC。MFC。MFC50μm11．78%MBR9．25%8．24%。MFCMBR。Bai2450μm。50μm。50μm。Bazi25DSI、DSI。MBR、MFC-MBRMFCDSI0．996、0．9081．018。DSI。2．3．3污泥的脱水性CST。EPSEPS26。Normalize