GOPTFE复合膜强化膜蒸馏深度处理焦化废水任静

、、[1-3]。[4]。、[5-6]。。。、、-[7-8]。HUGO[9]。GO。GO-、GO。11.1GOHummersGO[9]。5g115mL、2.5g15g1h38℃30min400mL95℃20minGO-PTFE111211.2.030006GOPTFE-GO。GO144.2°103.9°、。GO-PTFE36.6%25μS/cmGO-PTFE。GO、。GOPTFETQ028.8X784A1000-3770(2019)02-0043-0052018-[e-mail]@sxu.edu.cn45220192TECHNOLOGYOFWATERTREATMENTVol.45No.2Feb.,2019DOI:10.16796/j.cnki.1000-3770.2019.02.00943PTFEGO-PTFE3Fig.3Contactanglesoforiginalandcompositemembrane300mL。10%。6～8hGO。1.2GO-PTFE50mgGO50mL1.0mgPVDFN-NMP6hPVDF-GO。PTFE0.22μm82%PVDF-GOPTFEPVDFGOPTFE。GOPVDFGO-PTFE。1.3COD281mg/L3.8mS/cm。14.4cm2。1。HH-501A±0.1℃50℃DS-2006±0.1℃20℃WT600-2J0.3m/s。DJ-1000JSevenMulti。1.4GOFTIRPerkinElmer2000ATR-FTIRDSA25FESEMJSM-7001FGO。GO-PTFEEEMCaryEclipse200～450nm10nm250～550nm1nm5nm600nm/min。22.12PTFEGO-PTFEATR-FTIR。3PTFE1220cm-11150cm-1F－C－F[10]。GOF－C－F3409、1623、1724cm-1GOO－HC＝CC＝O[11]。GOPTFE。3。3PTFE144.2°。GO103.9°GO、、GO。4GO-PTFESEM。1Fig.1MDprocessσ/cm-12ATR-FTIRFig.2ATR-FTIRspectraoforiginalandcompositemembranes4,0003,5003,0002,5002,0001,5001,000452444GO。PTFEGO。GO[12]。FTIRGOPVDF。2.25GO。515.96kg/(m2·h)24h33%[13]。GO21.81kg/(m2·h)36.6%10h20%16.5kg/(m2·h)。[14]。6GO-PTFE。625μS/cmGO-PTFEGO-PTFE。PTFE55.29μS/cmGO。3D-EEM7～9。7T1、T2、A、C473D-EEMFig.73D-EEMspectraoffeedsolutionPTFEGO-PTFE4SEMFig.4SEMimagesoforiginalandcompositemembranesurface5Fig.5Changeofpermeatefluxoforiginalandcompositemembraneswithtime05101520250510152025J/(kgmh)t/h6Fig.6Changeofpermeateconductivityoforiginalandcompositemembraneswithtimeγ/(μS·cm-1)05101520250102030405060t/h8PTFE3D-EEMFig.83D-EEMspectraofPTFEmembranedistillateGO-PTFE45、、[15]。[16]。89PTFET1、A、C。GOT2GO。2.3GO、-[17]。GO。GO、PTFEGOGO[18]。GOPTFE[19]。3GO-PTFEGO144.2°103.9°FTIRGO-。GO-PTFEPTFEGO-PTFE36.6%GOGO。。GO-PTFE25μS/cmGO-PTFE。[1]ANAK,GUOJ,JEONGS,etal.Highfluxandantifoulingpropertiesofnegativelychargedmem-branefordyeingwastewatertreatmentbymembranedistillation[J].WaterResearch,2016,103:362-371.[2],.[J].,2016,41(4):139-142.[3]XUL,WANGJ,ZHANGX,etal.Developmentofanovelintegratedmembranesystemincorpo-ratedwithanactivatedcokeadsorptionunitforadvancedcoalgasificationwastewatertreat-ment[J].Colloids&SurfacesAPhysicochemical&EngineeringAspects,2015,484:99-107.[4]WIJEKOONKC,HAIFI,KANGJ,etal.Rejectionandfateoftraceorganiccompounds(TrOCs)duringmembranedistillation[J].JournalofMembraneScience,2014,453(3):636-642.[5]LIJ,WUJ,SUNH,etal.Advancedtreatmentofbiologicallytreatedcokingwastewaterbymem-branedistillationcoupledwithpre-coagulation[J].Desalination,2016,380:43-51.[6]RENJ,LIJ,CHENZ,etal.Fateandwettingpotentialofbio-refractoryorganicsinmembranedistillationforcokewastewatertreatment[J].Chemosphere,2018,208:450.[7]SALEHISM,PROFIOGD,FONTANANOVAE,etal.Membranedistillationbynovelhydrogelcompositemembranes[J].JournalofMembraneScience,2016,504:220-229.[8],,.PVDF[J].,2016,33(6):49-55.[9]HUM,MIB.Enablinggrapheneoxidenanosheetsaswaterseparationmem-branes[J].EnvironmentalScience&Technology,2013,47(8):9GO-PTFE3D-EEMFig.93D-EEMspectraofGO-PTFEcompositemembranedistillate45246DenitrificationCharacteristicsofModifiedPHBVFENGKai,LIUHailong(SchoolofEnvironmentalandResourceSciences,ShanxiUniversity,Taiyuan030006,China)Abstract:RemovalofNO3--NfromwaterbyusingmodifiedPHBVasexternalsolidcarbonsourceandbiofilmcarrierfordenitrificationreactor,NaHCO3asthemodifier.TheeffectofNaHCO3onthePHBVrawmaterialanddenitrificationeffectbymodifiedPHBVfillerreactorwasanalyzed.TheresultsshowedthatNaHCO3couldimprovetheporosity1.20~2.06timesofPHBVandproduceporousstructure.ThemodifiedPHBVhadadvantagesofincreasedactivesludgeinclusioncapacity,andcontactareabetweenmicroorganismsandsolidcarbonsource,decreasedwaterflowimpactandincreasedbiofilmstrength.FTIRanalysisshowedthatthesurfacefunctionalgroupofmodifiedPHBVwasthesameasrawPHBV,anditsessentialcharacteristicshadnochange.WhenthemassratioofPHBVtoNaHCO3was10:0.5,everyaspectsofthefillerhadbestperformance.AppropriatemodificationcouldmakerawPHBVproducedisposabledissolvedorganicmatter(DOM),moreovershortenbiofilmculturingtimeandincreaserateofmicrobialreproduction.Inthepilotexperimentalreactor,NO3--Nremovalratewasstableabove95%,andtherewerenonegativelychangedintheotherparameters.Keywords:PHBV;modification;sodiumbicarbonate;porousmaterial;denitrificationAdvancedTreatmentofCokingWastewaterbyGO/PTFECompositeMembraneinMembraneDistillationRENJing1,LIJianfeng1,YANXiaoqing1,LIYanchao2,CHENGFangqin1(1.ShanxiCollaborativeInnovationCenterofHighValue-addedUtilizationofCoal-relatedWastes,InstituteofResourcesandEnvironmentalEngineering,ShanxiUniversity;2.CollegeofEnvironmentalandResourceSciences,ShanxiUniversity:Taiyuan030006,China)Abstract:Inordertoimprovethemembraneresistancetofoulingandwetting,anovelhydrophilic-hydrophobiccompositemembranewasfabricatedbycoatinggrapheneoxide(GO)onthepolytetrafluoroethylene(PTFE)substrate.Thepreparedmembranewasusedforadvancedtreatmentofcokingwaste-waterinmembranedistillation(MD),thesurfacecharacteristicsandMDperformanceofmodifiedandun-modified