臭氧活性炭紫外光联用处理几种高浓度有机废水影响因素

28320083ActaScientiaeCircumstantiaeVol.28,No.3Mar.,2008:(No.2003C33036)SupportedbytheScienceandTechnologyDepartmentofZhejiangProvince(No.2003C33036):(1965),,;3(),E2mail:[e-mail]:DINGChunsheng(1965),male,professor;3Correspondingauthor,E2mail:[e-mail],,,.2008.//[J].,28(3):496-501DingCS,MiaoJ,QinSL,etal.2008.Influencingfactorsofhigh2concentrationorganicwastewatertreatmentbyO3/UVusinggranularactivatedcarbon(GAC)asthecatalyst[J].ActaScientiaeCircumstantiae,28(3):496-501//1,3,1,2,21.,3100322.,311201:2007202201:2007206211:2007212226:,/,pH/,,,COD(BOD5/COD).,,COD;/,,;,pHCOD,pHCOD,pH=9.0;,/,COD52%,(BOD5/COD)0.100.32,.:;;;;;:025322468(2008)032496206:X703:AInfluencingfactorsofhigh2concentrationorganicwastewatertreatmentbyO3/UVusinggranularactivatedcarbon(GAC)asthecatalystDINGChunsheng1,3,MIAOJia1,QINShulin2,GAOLiang21.CollegeofArchitecture&CivilEngineering,zhejianguniversityoftechnology,Hangzhou3100322.HangzhouInstituteforEnvironmentProtection,ChinaCoalResearchInstitute,Hangzhou311201Received1February2007;receivedinrevisedform11June2007;accepted26December2007Abstract:OzonationcombinedwithUVirradiation(O3/UV)usinggranularactivatedcarbon(GAC)asthecatalystwasinvestigatedasapretreatmentmethodforhigh2concentrationorganicwastewater.Theeffectofoperatingparameterssuchasozonedosage,pHvalueandUVlightirradiation;andtheeffectivenessoftheprocesstoremoveCODandtoincreasebiodegradationcapacity(BOD5/CODratio)wasalsoexaminedundertheoptimumconditions.TheresultsshowedthattheCODremovalefficiencyofparanitrobenzoicacidwastewaterbyozonationusingGACasthecatalystwasmuchhigherthaneitherozonationorGACcatalytictreatmentalone.Theremovalefficienciesoflongchainaromaticorganicsinwastewater,suchasparanitrobenzoicacidandguanine,weremuchbetterthanthoseofshortchainorganics,suchasacetaldehydeandethanolamine.ItwasalsofoundthatCODremovalincreasedwithincreasingpHvaluesinneutralandalkalinesolutionswhileexcessivealkalinityweakenedCODremoval.ApHvalueof9.0wasmostsuitable.TheCODremovalofparanitrobenzoicacidwastewaterbytheO3/GAC/UVprocesswas52%,andtheBOD5/CODratioincreasedfrom0.10to0.32,indicatingthatthebiodegradationcapacitywasgreatlyimproved.Keywords:ozonation;GAC;UVlight;organicwastewater;catalytic2oxidation;operatingparameters1(Introduction)(2107V,,),(Glazeetal.,1992;Huangetal.,1993;Andreozzetal.,1999).3://(Hoigne,1998;Cameletal.,1998).,,.(,2000),,.(Hoigneetal.,1983;Andreozzietal.,1999;Graciaetal.,2000;Karpeetal.,1998),.(GAC),.2(Materialsandmethods)2.1.:(COD=11300mgL-1pH=5.8);:(COD=13250mgL-1pH=6.2);:()(COD=10960mgL-1pH=4.1);:()(COD=15780mgL-1pH=5.4).,,.2.2(GAC),,,,.WaterTec,:LS287T5L2UV2A,14W,425mA,254nm,.2.3,,100mm,1000mm,5L.,,.,,,,23mm.,./,,.1.1(1.;2.;3.;4.;5.;6.;7.;8.;9.;10.;11.;12.;13.;14.UV;15.;16.)Fig.1Flowchartofthepilot2scaletest(1.oxygencylinder;2.dryingbox;3.gasflowmeter;4.ozonegenerator;5.checkvalve;6.diffusionsystemforozone;7.activatedcarbonlayer;8.bubblecolumnreactor;9.bottomvalve;10.inletpump;11.wastewaterbasin;12.circulatingpump;13.fluidflowmeter;14.ultravioletequipment;15.tailgastreatment;16probetube)3(Results)3.1,/3,2.2,,COD/COD.5h,8%,18%,/COD32%,4./,,,,COD.7942823Fig.2ComparisonofCODremovalefficienciesofparanitrobenzoicacidwastewaterby3processes3.24,4,,/,3.3CODFig.3EffectofozonedosageonCODremovalfromdifferentwastewaters,/4,,,800mgL-1,COD7%;,,10%,,/.,.COD40%,43%,400mgL-1,COD40%,,3%,;,200mgL-1,COD40%,,,400mgL-1,55%,.,/,.3.3pH,CODpHCOD=10960mgL-1pH=4.1COD=15780mgL-1pH=5.4.,,5pH,(200mgL-1),/COD.pH,/4.4pH/Fig.4EffectofpHonCODremovalefficiency,.,,.,/,pH8.0,COD45%,9.0,55%,pH,;,,pH8.0,COD33%,9.0,40%.,pH9.0.3.4,8943://./,UV,UV/.5.5O3/GAC/UVFig.5TreatmentefficienciesofdifferentwastewatersbytheO3/GAC/UVprocess,,.O3/GAC/UVCOD3%8%.3.5/,(pH)/,COD(BOD5/COD).()(2L)20%,pH9.0,,400mgL-1,,,/.5103060minCODBOD5.6.6O3/GAC/UVFig.6TreatmentefficienciesofparanitrobenzoicacidwastewaterbytheO3/GAC/UVprocess,/.COD10960mgL-1,pH9.0,400mgL-1,,30min,COD52%,BOD5/COD0.100.32,,.4(Discussion)4.1,5h,COD8%,COD18%,/COD32%,4.,,(Maetal.,2000;Karpeletal.,1999;Tongetal.,2002;,2004).,,OH-,,OH.OH(H2O2UV),(,2001).4.2,/99428,,,,.,,,COD55%40%.4.3pH,,,OH,;,,.(Paillardetal.,1987;Willianetal.,1987),pH,OH-,(OH),,,COD.,,,,,,,,;,,,,,.pH,,,COD,(,2006;,2001).4.4,.,UV,OH(Paillardetal.,1987),.5(Conclusions)1),COD32%,14%24%.,.2)./,,.,.,400mgL-1,/COD40%,COD55%.3)pHCOD.,pHCOD,,COD,pH9.0.4),,COD3%8%.5),/,COD52%,(BOD5/COD)0.100.32,,.:(1965),,..References:AndreozziR,CaprioV,InsolaA,etal.1999.Advancedoxidationprocesses(AOP)forwaterpurificationandrecovery[J].CatalysisToday,53(1):5159CamelV,BermondA.1998.Theuseofozoneandassociatedoxidationprocessesindrinkingwatertreatment[J].WaterResearch,32(11):32083222DuGR,SunZX,TongSP,etal.2004.Factorsofdegradationoforganicwastewaterbycatalyticozonation[J].JournalofEastChinaInstituteofTechnology,27(2):173177(inChinese)GlazeWH,BeltranF.1992.Chemicalmodelsofadvancedoxidationprocesses[J].WaterPollutionResearchJournalofCanada,27(1):2342GraciaR,CortesS,SarasaJ,etal.2000.TiO22catalysedozonationofrawEbroriverwater[J].WaterResearch,34(5):15251532HuangCP,De