城市污水处理厂污泥制活性炭的研究

,,(,300071,E2mail:[e-mail]):,.,.,,.:40%20min6001213,514542mg/g,01390153mL/g01100115mL/g01150123mL/g,193256m2/g.COD2400mg/L250,COD87%80%.:;;;:X703:A:025023301(2004)20048204:(023608411):(1963),,,.StudyontheActivatedCarbonProducedwithSewageSludgeRENAi2ling,WANGQi2shan,HEJun(CollegeofEnvironmentalScienceandEngineering,NankaiUniversity,Tianjin300071,China,E2mail:[e-mail])Abstract:OnthebasisoftestofcharactersandcomponentsofsewagesludgefromDongjiaoWastewaterTreatmentPlantinTianjin,thepreparationtechnologyofproducingsludgeactivatedcarbonusingmunicipalwastewatersludgewasdiscussed.Chlorideofzinc(ZnCl2)wasusedasasludgeactivationagentduringthepyrolyticprocess.Theoptimaloperatingconditionsweredeterminedthroughorthogonalexperiment.Theactivationagentconcentration,theratioofsolidtoliquid,theactivationtemperatureandactivationtimewaschosenasfourimpactfactors.BETsurfacearea,poresizedistributionandSEMphotographywasanalyzedtoevaluatetheperfor2manceofsludgeactivatedcarbon.Thepaperalsostudiedtheeffectsofsludgeactivatedcarbonasanadsorbentforwastewatertreat2ment.ResultsindicatedthattheoptimalconditionswerefortypercentconcentrationsolutionofZnCl22immersedsludgepyrolyzedat600for20mininaratioof12.Themaximaliodinevalueofsludgeactivatedcarbonwas514542mg/gandBETsurfaceareawas193256m2/g.Macropore,mesoporeandmicroporevolumewas01390153mL/g,01100115mL/g,01150123mL/g,respectively.WhensludgeactivatedcarbonwasusedasanadsorbentfordisposalofwastewaterofwhichCODwas2400mg/Landchromawas250,theremovalefficiencyofCODwasmorethan87%andtheremovalefficiencyofchromawasmorethan80%.Keywords:sewagesludge;sludgeactivatedcarbon;resourceutilization;wastewatertreatment.,,,,,1t,20002000t(96%)[1].()[2,3],,,,[4].,,.,,,.1111,,,,.NiCdCrPdCuZn(GB/T155551221995GB/T155551621995GB/T155551921995),As2520046ENVIRONMENTALSCIENCEVol.25,Sup.June,2004转载(GB50851321996),CuCrCdZn(GB428484),.,2,,.1Table1HeavymetalconcentrationofsewagesludgefromDongjiaowastewatertreatmentplantinTianjin1)/mgL-1/mgL-1(GB50851321996)2)/mgkg-1/mgkg-1(GB4284284)pH615pH615Cu()215501801250500Pb()01123101003001000Cr6+/(Cr)01057115(821)6001000Cd()010701394520Ni()2142562100200Zn()9135010565001000As()0014153475751)GB/T15555112155551112),.2Table2CharacterofsewagesludgefromDongjiaoWastewaterTreatmentPlantinTianjin/%/%()C/%()/kJkg-181133571335913745102501671303011112(1),..2,57133%59137%,,,,(ZnCl2FeSO4K2S),,.().(2),2%,10%;24h,(105)30min,,..,1.ZnCl21Fig.1Flowchartofsludgeactivatedcarbonpreparation113,,COD.114(1)NOVA2000.(2)S5000N(SEM).2211[613],43,.4:ttD()c,3:500550600;152025min;111213;30%40%50%,3.Rj,:,.(1)2,,525625,,600,,,,,,.,,94中国科技论文在线(12,ZnCl240%,20min)2Fig.2Theeffectofpyrolyzedtemperatureoniodinevalue(2)3,,,.10min,,,20min.(12,600,40%)3Fig.3Theeffectofpyrolyzedtimeoniodinevalue(3)4,50%,.,,.,,.,,,,.,,,,40%.(12,40min,600)4Fig.4Theeffectofactiveagentconcentrationoniodinevalue(4)(D)5,D1213,,,12.(500,40%,10min)5Fig.5Theeffectofsolid/liquidmassratiooniodinevalue,:40%20min60012,512542mg/g.212(1)14204.,01390153mL/g01100115mL/g01150123mL/g,193269m2/g.0525中国科技论文在线(2)(SEM)6.,,.6SEMFig.6SEMphotographyofsludgeactivatedcarbon213[14]SEM,5g,250mL,UASBCOD2400mg/L250100mL150mL200mL250mL300mL,24h,COD,COD87%95%,80%,,.214(GB/T155551221995GB/T155551621995GB/T155551921995)NiCdCrPdCuZnAs,,,.,.3,,,,,,.:[1].[M].:,2002.[2]LitzN.Assessmentoforganicconstituentinsewagesludge[J].WaterScienceandTechnology,2000,142(9):89192.[3]MininniG,etal.PartitioningofCr,Cu,PbandZninsewagesludgeincinerationbyrotarykilnandfluidizedbedfurnaces[J].WaterScienceandTechnology,2000,14(8):6168.[4]ChargePC,YouJH.Useofsewagesludgeformanufacturingadsorbents[J].Can.J.Chem.Eng.,1987,65(6):922927.[5].[M].:,2001.7374,122124,166202.[6]JeyaseelanS,LuGQ.Developmentofadsorbent/catalystfrommunicipalwastewatersludge[J].WaterSci.Tech.,1996,34(324):499505.[7]CalvoLF,etal.Upgradingsewagesludgeforadsorbentprepa2rationbydifferenttreatments[J].BioresourceTechnology,2001,80:143148.[8]Z.Abu2Kaddourah,etal.Effectofhightemperaturemeltingontheporosityandmicrostructureofsludgefromdomesticsewagesludge[J].WaterScienceandTechnology,2000,141(8):99105.[9]Hung2LungChiang,Ching2GuanChoa,Shi2YuChen.Thereusebiosludgeasanadsorbentfromapetrochemicalwastewatertreat2mentplant[J].JournaloftheAirandManagementAssociation,2003,53:10421053.[10],,.[J].,1997,13(4):1013.[11].[J].,2000,14(4):202206.[12],.[J].,2001,22(4):1214.[13],,.[J].,1996,15(9):2224.[14]GrahamN,ChenXG,JayaseelanS.Thepotentialapplicationofactivatedcarbonfromsewagesludgetoorganicdyesremoval[J].WaterScienceandTechno