MBR处理食品加工废水过程中亲水性PVDF膜性能研究赵珂青

、、[1]。2060SmithMBR[2]。、、。[3-4]。MBR、[5]。MBR。[35-7]。[8]MBR10～30L/(h·m2)MBR。、、[69]。。[10-12]。MBR[5]。。PVDFMBR[13]。、PVDFPVDF-MBR。MBRPVDF11211.2.315211PVDFMBRMBR。PVDF0.22～0.30μm8s70°0°0.1MPa1581L/(h·m2)COD400～800mg/L90～110、HRT10hMBRCOD40～50mg/L3～7MBR、30d30kPa30～40L/(h·m2)。MBRPVDFTQ028.8X792A1000-3770(2014)08-0076-0[e-mail][e-mail]40820148TECHNOLOGYOFWATERTREATMENTVol.40No.8Aug.,20147611.1MBR3MBRPVDF。1。/DropMeterA-100P721-100。1.2。0.1MPa10min/PVDFMBR1200L4～6m3/h20L/hHRT10h。10minCODGB11914－89[14]MBRCODGB13200－91[15]。22.1PVDFMBRPVDF2。20.22～0.30μm0.1MPa1581L/(h·m2)。3PVDF。38s70°0°。2.2MBRMBR。1h10min。30d4。4Fig.4Thevariationoffilteringpressureandfluxalongwithoperationtime04812162024283201020304020406080100
p/kPat/d

pJ30kPa/(Lhm)1Fig.1Theexperimentequipmentr/μm2Fig.2Theporesizedistributionofmembrane0.00.10.20.30.40.50123456lgn3Fig.3Themensurateresultofcontactangle0246810010203040506070t/sθ/(°)MBRPVDF77430kPa30kPa30L/(h·m2)。。2.3COD5MBRCOD。5COD1200mg/L200mg/LCOD40～50mg/LGB8978－1996[16]。MBRCOD。2.46MBR。6MBR7。MBRPVDF0.22～0.30μm。3PVDFMBR30d30kPa30L/(h·m2)。MBRCOD40～50mg/L7。。MBR。[1],,.[J].,2012,35(4):135-139.[2]SmithJC,GregorioDDi,TalcottRM.Theuseofmembranesforactivatedsludgeseparation[C].Lafayette:PurdueUniversity:24thAnnualPurdueIndustrialWasteConference,1969:1300-1310.[3]ZhengX,LiuJ.Dyeingandprintingwastewatertreatmentusingamembranebioreactorwithagravitydrain[J].Desalination,2006,190(1/3):277-286.[4]WangZ,WuZ,MaiS,etal.ResearchandapplicationsofmembranebioreactorsinChina:progressandprospect[J].SeparationandPurificationTechnology,2008,62(2):249-263.[5]WangZ,WuZ,YuG,etal.Relationshipbetweensludgecharacteristicsandmembranefluxdeterminationinsubmergedmembranebioreactors[J].JournalofMembraneScience,2006,284(1):87-94.[6]LiX,WangX.Modellingofmembranefoulinginasubmergedmembranebioreactor[J].JournalofMembraneScience,2006,278(1/2):151-161.[7]EngelhardtN,FirkW,WarnkenW.Integrationofmembranefiltrationintotheactivatedsludgeprocessinmunicipalwastewatertreatment[J].WaterScienceandTechnology,1998,38(4/5):429-436.[8],,,.[J].,2008,28(3):416-432.[9]ChuHP,LiX.Membranefoulinginamembranebioreactor(MBR):sludgecakeformationandfoulingcharacteristics[J].BiotechnologyandBioengineering,2005,90(3):323-331.[10]YuHY,XuZK,YangQ,etal.Improvementoftheantifoulingcharacteristicsforpolypropylenemicroporousmembranesbythesequentialphotoinducedgraftpolymerizationofacrylicacid[J].JournalofMembraneScience,2006,281(1/2):658-665.[11],,.[J].,2006,39(B06):316-319.[12]YuliwatiE,IsmailAF,MatsuuraT,etal.EffectofmodifiedPVDFhollowfibersubmergedultrafiltrationmembraneforrefinerywastewatertreatment[J].Desalination,2011,283:214-220.[13],,,.[J].,2012,38(1):32-35.[14]GB11914－89[S].[15]GB13200－91[S].[16]GB8978－1996[S].5MBR、CODFig.5ThevariationofMBRinfluentandeffluentCODalongwithoperationtime04812162024283202004006008001,0001,2001,400
COD/(mgL)t/d6MBR、Fig.6ThevariationofMBRinfluentandeffluentturbidityalongwithoperationtime04812162024283204080120160200
/t/d8240878EXPERIMENTALSTUDYOFSO42-REMOVALFROMREVERSEOSMOSISCONCENTRATEDWATERZhouXuan1,WuFuping1,YuanGuowen1,WangYingchao2,XiaoYu2,XiaChuan2(1.SchoolofEnvironmentalandMunicipalEngineering,LanzhouJiaotongUniversity;2.EngineeringResearchCenterofIntegratedAvailability,MinistryofEducation:Lanzhou730070,China)Abstract:Inordertoalleviatetheseriouspollutionproblemswhichbroughtbythereverseosmosisconcentratedwater,thisexperimentuseddifferenttreatmentmethodstoanalyzeandcomparetheremovalofCa2+,Mg2+andSO42-intheconcentratedwater.TheresultsshowedthatthechemicalprecipitationmethodfortheremovalofCa2+andMg2+isbetter,andtheremovalratecanreachover85%,buttheremovalofSO42-isnotideal.However,theSO42-removalefficiencybyettringitemethodwasthebestintheotherthreemethods,andtheremovalratecanreach88%.ThisisbecauseoftheformationofAlO2-isthekeytothegenerationofettringite.InthepH11~12,slowlyaddingcalciumhydroxidecanfurthestgetridofSO42-inconcentratedwater.Inaddition,thegypsumcrystalmethodcannotonlyremoveSO42-,butalsohavetheoppositeeffect;flocculationprecipitationmethodbymixingcalciumhydroxideandpolymericaluminumchloridecannotremoveSO42-.Therefore,chemicalprecipitationandettringitemethodcanbeasaneffectivemethodfortreatmentofthereverseosmosisconcentratedwater.Keywords:reverseosmosisconcentratedwater;chemicalprecipitationmethod;ettringitemethod;SO42-AlO2-SO42-pH11～12Ca2+SO42-。[1],,.[J].,2010,30(5):23-26.[2],.[J].,2005,36(3):58-59.[3].[J].,2006,32(3):80-81.[4],,,.[J].,2007,24(4):5-8.[5]BenattiaCT,TavaresCRG,LenziE.Sulfateremovalfromwastechemicalsbyprecipitation[J].JournalofEnvironmentalManagement,2009,90(1):504-511.[6]LensPNL,VisserANL,JanssenAJH,etal.Biotechnologicaltreatmentofsulfate-richwastewaters[J].CriticalReviewsinEnvironmentalScienceandTechnology,1998,28(1):41-88.[7]GhigliazzaR,LodiA,RovattiM.Kineticandprocessconsiderationsonbiologicalreductionofsolubleandscarcelysolublesulfates[J].Resources,ConservationandRecycling,2000,29(3):181-194.[8]《》.[M].4.:,2002.