O3H2O2O3及U省略O3在焦化废水深度处理中的应用刘金泉

3　3环境工程学报Vol.3,No.320093ChineseJournalofEnvironmentalEngineeringMar.2009O3、H2O2/O3UV/O3刘金泉　李天增　王发珍　胡晓辉　陈伟山(,101102)　　O3、H2O2/O3UV/O3(AOPs),O3、pH、COD,O3:40min,pH8.5,25℃,CODUV25447.14%73.47%;H2O2/O3UV/O3CODUV254,H2O2/O3H2O2。,COD,O3AOPs。　O3　H2O2/O3　UV/O3　　　X703.1　　　A　　　1673-9108(2009)03-0501-05ApplicationofO3,H2O2/O3andUV/O3inadvancedtreatmentofcokingwastewaterLiuJinquan　LiTianzeng　WangFazhen　HuXiaohui　ChenWeishan(ResearchandDevelopmentCenter,BeijingSoundEnvironmentalGroup,Beijing101102)Abstract　AdvancedtreatmentofcokingwastewaterwereconductedusingAOPsincludingO3,H2O2/O3andUV/O3.Theinfluencesofcontacttime,pHofsolutionandreactiontemperatureontheremovaleffectofwastewaterwereinvestigatedandtheresultsshowedthattheremovalratesofCODandUV254couldreach47.14%and73.47%whenthethreefactorswere40min,8.5and25℃,respectively.ThecombinedprocessofH2O2/O3andUV/O3couldincreasetheremovalefficiencyofCODandUV254ofcokingwastewatercomparedwithO3solely,whiletheoperationalefficiencyofH2O2/O3dependsonthedosageofH2O2.ItwasalsofoundthatCODcannotreflectexactlythedegradationeffectoforganicpollutantsincokingwastewaterbytheseAOPs.Keywords　O3;H2O2/O3;UV/O3;cokingwastewater;advancedtreatment:2008-07-23;:2008-08-11:(1978～),,,。E-mail:[e-mail]　　,,COD。,、,、。O3(·OH),[1,2]。,O3,·OH,O3,O3;O3,、。O3、。H2O2O3,,;O3,。,O3、H2O2/O3UV/O33,CODUV254,O3,3。31　1.1　　,COD=128mg/L,pH=7.32,NH3-N、TP、SS、《》(GB13456-1992)。O33S-A3O3(),3g/h;H2O2(30%);UV()。1.2　O3;O3[3];CODCTL-12();UV254752()。1.3　O3:O3O3,O31min。,0.5m,3.9L,(0.1～2mm),KI。O3,,0.025mol/LNa2S2O3,。H2O2/O3H2O2;UV/O3,1。1　Fig.1　Schematicdiagramofreactionsetup2　2.1　O31.5L,O20.6L/min,O320mg/L,O3。、pHO3,。2.1.1　接触时间对焦化废水COD去除效果的影响2,CODO3。2minCOD,5min,(,COD),O3,COD,,O3,,COD,COD。,COD,40min,39.39%。90min,COD,O3,O3,。(pH=7.32,T=15℃)2　Fig.2　InfluenceofcontacttimeonremovalefficiencyofCOD2.1.2　溶液pH对焦化废水COD去除效果的影响3,pH5,COD10%;pH,COD,pH8.538%,9、10,,,,pH8.5,COD。O3,O32[4]:,O35023:O3、H2O2/O3UV/O3、,();O3·OH,,·OH,10-4mol/L,10μs,。,,,。·OH,,。(t=40min,T=15℃)3　pHFig.3　InfluenceofpHonremovalefficiencyofCOD2.1.3　反应温度对焦化废水COD去除效果的影响4,,,COD,25℃,COD,。O3(t=40min,pH=8.5)4　Fig.4　InfluenceoftemperatureonremovalefficiencyofCOD,。,,;,,O3,O3,O2。,CODO3。,O3:40min,pH8.5,25℃。2.1.4　O3对焦化废水UV254的去除效果,,。,,254nm(UV254),。5,COD,,UV254,120min82.64%。O3,,。5　O3UV254Fig.5　RemovalefficiencyofUV254byO3O3,,(CO2-3、)、,。O3COD40%,(≤50mg/L),。,COD,O3;,O3UV254,5033O3。,,COD,CODO3,UV254TOC,、O3。2.2　H2O2/O3O3,H2O2,O3,67。6　H2O2/O3CODFig.6　RemovalefficiencyofCODofcokingwastewaterbyH2O2/O36,5min,H2O2COD,H2O2,COD。,O3,5minCOD17.22%,0.21mLH2O2,COD3.51%-35.89%。H2O2O3,·OH,,,COD。40min,H2O2,COD,H2O20.10.2mL,COD46.84%51.28%;H2O20.51mL,COD,O3。H2O2O3,O3:,H2O2·OH,COD:H2O2+·OHH2O+HO2·(3)HO-2+·OHOH-+HO2·(4)7,H2O2/O3UV254O3,H2O2,UV254,0.5mL82.90%,1mL,UV254。7　H2O2/O3UV254Fig.7　RemovalefficiencyofUV254ofcokingwastewaterbyH2O2/O3H2O2/O3,H2O2O3·OH。,H2O2/O3,CODH2O2,H2O2。,,H2O2/O3。·OH,O3,H2O2,、。[5,6]。2.3　UV/O38UV/O3O3,CODUV25449.46%90.18%,40min。UV/O3O3,,O3·OH,·OH5043:O3、H2O2/O3UV/O3。O32,:　　　　O3+hν·O+O2(5)　　　　·O+H2O2·OH(6)　　　O3+H2O+hνH2O2+O2(7)　　　　H2O2+hν2·OH(8)·OH,1molO32mol·OH。·OH,,,[7]。,·OH,。,,,·OH,,。8　UV/O3CODUV254Fig.8　RemovalefficiencyofCODandUV254ofcokingwastewaterbyUV/O3UV/O3,O3,H2O2/O3,,、UV,。,O3O3、,,、、。3　　O3,:O340min,pH8.5,25℃。,CODUV25447.14%73.47%。3,H2O2/O3UV/O3(·OH),O3。H2O2/O3,H2O2,,;,UV/O3、。O3,COD,UV254、TOC,。[1]RamirezI.M.,VelásquezM.T.O.Removalandtransfor-mationofrecalcitrantorganicmatterfromstabilizedsalinelandfilleachatesbycoagulation-ozonationcouplingproces-ses.WaterResearch,2004,38:2359～2367[2]BrillasE.,CabotP.L.,RodríguezR.M.,etal.Degra-dationoftheherbicide2,4-DPbycatalyzedozonationusingtheO3/Fe2+/UVAsystem.AppliedCatalysisB:Environ-mental,2004,51:117～127[3],,,.(IDS).,1999,9(1):58～60[4]KusicH.,KoprivanacN.,BozicA.L.MinimizationoforganicpollutantcontentinaqueoussolutionbymeansofAOPs:UV-andozone-basedtechnologies.ChemicalEngi-neeringJournal,2006,123:127～137[5],,.O3/H2O2H2O2.,2006,7(12):46～49[6]KosakaiK.,YamadaH.,ShishidaK.,etal.Evaluationofthetreatmentperformanceofamultistageozone/hydro-genperoxideprocessbydecompositionby-products.WaterResearch,2001,35(15):3587～3594[7]ParagR.G.,AniruddhaB.P.AreviewofimperativetechnologiesforwastewatertreatmentⅡ:Hybridmethods.AdvancedinEnvironmentalResearch,2004,8:553～597505