PAC影响MBR污泥混合液特性及膜污染研究李绍峰

32220112ENVIRONMENTALSCIENCEVol.32No.2Feb.2011PACMBR121.5180552.150030PACMBREPSRcSMPRpPAC.PACEPS、RcPACEPSRcRpSMPPACSMPRpRcRpRc/Rf26.32%～63.16%Rp/Rf7.89%～35.32%RcPACRcRp.X705A0250-3301201102-0508-072010-01-262010-03-26070090311972～[e-mail]atedCarbonontheSludgeMixedLiquorCharacteristicsandMembraneFoulingofMBRLIShao-feng1GAOYuan21.DepartmentofBuilding＆EnvironmentalEngineeringShenzhenPolytechnicInstituteShenzhen518055China2.SchoolofResource＆EnvironmentNortheastAgriculturalUniversityHarbin150030ChinaAbstractEffectofdosingpowderactivatedcarbonPAConthecharacteristicsofthesludgemixedliquorinmembranebioreactorMBRwasinvestigatedbyparalleltests.AndthereasonthatPACmitigatedmembranefoulingwasalsoexplored.TheresultsshowedthatPACcoulddecreasemixtureviscosityandincreasesludgeparticlesizewhichledtolesstrans-membranepressuredeveloping.ExtracellularpolymersubstancesEPScontentsludgespecificresistanceandcakelayerresistanceRchadagoodcorrelation.AddingPACcoulddecreaseEPSconcentrationsludgespecificresistanceandthenslowdowntheincreaseofRcwhichmitigatedmembranefouling.MembraneporeblockingresistanceRpincreasedexponentiallywithincreasingofthesolublemicrobialproductsSMPconcentrationinthesupernatant.DosingPACreducedtheSMPconcentrationandsloweddownthegrowthrateofRpwhichwashelpfultomitigatingmembranefouling.RcandRpincreasedalongwiththeoperationofMBRsandRc/Rf26.32%-63.16%wasalwaysgreaterthanRp/Rf7.89%-35.32%whichsuggestedtheRcwasthemainfactorinmembranefouling.MoreoveritwasalsofoundthatcontrollingofdosingPAConRcwasbetterthanitonRp.KeywordsmembranebioreactorMBRpowderactivatedcarbonPACdistributionofrelativemolecularmasssludgespecificresistancemembranefouling.membranebioreactorMBR1..2～4.MBRpowderedactivatedcarbonPAC5.Tsai6MBRPACMBRPACGuo7PACSatyawalia89PAC23%PACPACPACEPS/PACPAC.PAC.PACMBR、DOI:10.13227/j.hjkx.2011.02.0042PACMBR、EPS、SMPRc、RpPACMBR.11.121PACMBR2PACPAC-MBR2PAC2g/L100～150.30L0.1μm0.2m2/55cm20cm.、10min5minHRT6h.22.5g/L.、、、、.2.1.2Mictrotrac-S3500Millipore8200DHJ-5-4EPS10SMP0.45μmEPS、、S-3000NHitachJapanCODMLSS11.1.3DarcyJ=ΔpμRm+Rc+Rp=ΔpμRm+RfJm3·m2·s－1ΔpPaμPa·sRmm－1Rpm－1Rcm－1RfRpRc.22.1PAC2.1.112.PAC-MBR.MBR1Fig.1VariationofviscositywiththeoperationofMBR2×5000Fig.2SEMimagesofsludgemixedliquor×500090532PAC-MBR.2MBRPAC-MBR.2.1.233Fig.3VariationofsludgeparticlesizewiththeoperationofMBR.PAC-MBRMBR12.、.13.2.1.3451、2.2UV254MBRPAC-MBRMBR230004MBRFig.4DistributionofrelativemolecularmassintheMBRsupernatant5PAC-MBRFig.5DistributionofrelativemolecularmassinthePAC-MBRsupernatant0152PACMBRMBRPAC-MBR.SMPMBR.671、2.6MBRFig.6DistributionofrelativemolecularmassintheeffluentwaterofMBR7PAC-MBRFig.7DistributionofrelativemolecularmassintheeffluentwaterofPAC-MBR2.2PAC2.2.1PAC130d0.04MPaHCl2hNaClO95%.8.130dMBR47、92130d3.PAC-MBR59119d0.04MPa2.PAC、.2.2.2PACRc.14.9115328Fig.8VariationoftransmembranepressurewiththeoperationofMBREPS2EPSEPS.10RcRc.RcPAC-MBREPS、RcMBRPACEPSRc.9EPSFig.9RelationshipbetweenspecificresistanceofsludgeandEPS2.2.3PACRp11PAC-MBRSMPMBR.PACPAC10Fig.10RelationshipbetweenspecificresistanceandRc、PAC-MBRSMPMBR.11SMPFig.11RelationshipbetweenSMPinthesupernatantandRp12SMPRpRpSMP0.80870.9087.SMP.PACSMPRp.2.2.412152PACMBR.MBRPAC-MBR47d59d.1PAC-MBRMBRMBR.PAC、RcRpRtRcRtRpRtRc.PACRcRtRp/RtPAC.1MBRPAC-MBR1×1012/m－1Table1VariationofmembraneresistanceinMBRandPAC-MBR×1012/m－17d21d35d47d1212121259d2Rm0.20.250.20.250.20.250.20.250.2547.6260.9635.0948.0811.9838.467.2514.209.40Rp0.090.060.130.120.590.161.330.640.7321.437.8922.8123.0735.3224.6133.6936.4727.44Rc0.130.100.240.150.880.241.630.871.6830.9526.3242.1028.8552.7036.9259.0649.3363.16Rf0.220.160.370.271.470.42.561.512.6152.3839.0264.9151.9288.0261.5392.7585.8098.12Rt0.420.410.570.521.670.652.761.762.661%31PACMBR、.2PACSRTSMP.3EPSRc.PACEPSRc.42SMPRpSMPRpSMP.MBRPACRp.5Rc/Rf26.32%～63.16%Rp/Rf7.89%～35.32%RcPAC.1.PACMBRD.2009.2.PACMBRJ.200733614-17.3ChoJAhnKHSeoYetal.ModificationofASMNo.1forasubmergedmembranebioreactorsystemincludingtheeffectsofSMPonmembranefoulingJ.WaterScienceandTechnology20034712177-181.4GaoMYangMLiHetal.PannitrificationandsludgecharacteristicsinasubmergedmembranebioreactoronsyntheticinorganicwastewaterJ.Desalination2004170177-185.5MengFGChaeSRDrewsAetal.RecentadvancesinmembranebioreactorsMBRsMembranefoulingandmembranematerialJ.WaterResearch2009431489-1512.6TsaiHHRavindranVPirbazariM.ModelforpredictingtheperformanceofmembranebioadsorberreactorprocessinwatertreatmentapplicationsJ.ChemicalEngineeringScience200560205620-5636.7GuoWVigneswaranSNgoHHetal.ComparisonoftheperformanceofsubmergedmembranebioreactorSMBRandsubmergedmembraneadsorptionbioreactorSMABRJ.BioresourceTechnology2008991012-1017.8SatyawaliYBalakrishnanM.PerformanceenhancementwithpowderedactivatedcarbonPACadditioninamembranebioreactorMBRtreatingdistilleryeffluentJ.JournalofHazardousMaterials2009170457-465.9SatyawaliaYBalakrishnanM.EffectofPACadditiononsludgepropertiesinanMBRtreatinghighstrengthwastewaterJ.WaterResearch2009431577-1588.3153210.D.2006.11.M..2002.12SalanitroJPJohnsonPCSpinnlerGEetal.Field