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当前位置:首页 > 商业/管理/HR > 公司方案 > TiO2PbO2复合膜光催化氧化降解染料废水董俊明
ResearchonthephotocatalyticoxidationdegradationofdyewastewaterbyusingTiO2/PbO2compositedfilmDongJunming,ChenXiaoyang(HunanUrbanConstructionCollege,Xiangtan411103,China)TiO2/PbO2,(,411103)[]TiO2/PbO2,。:TiO2/PbO2、pH=8.0、H2O2400mg/L。。,COD48.4mg/L。,。[];;TiO2/PbO2[]X703.1[]A[]1005-829X(2009)05-0057-04Abstract:Akindofround-shapedreactorofTiO2/PbO2compositedfilmbyphotocatalyticoxidationisputforward.Thedegradationprocessofthebio-chemicallytreateddyewastewaterbyusingthisreactorhasbeenstudied.Theresultsshowthattheoptimalconditionsofphotocatalyticoxidationare:zincslicewithTiO2/PbO2platedcompositedfilm,pH=8,H2O2400mg/L.Theaffectingfactorofotheroxidantsonthisprocessarediscussed.Aftertheorganicwastewateristreatedwiththisreactor,itsCODisreducedto48.4mg/L,andalloftheorganicpollutantsaredegradedtobesmallinorganicmolecules,andthusreachesGrade1oftheIntegratedWastewaterDischargeStandard.Keywords:photocatalyticoxidation;organicdyewastewater;TiO2/PbO2compositedfilm、,。,,,、,COD〔1〕。ATT,、、、,,,2570;、,,COD12200~23400mg/L,。TiO2/PbO2,,:COD48.4mg/L,pH6.7,28,TKN6.3mg/L,0.46mg/L,SS37mg/L。,。11.1:S-570(),RigakuD/max-B(),HJ-3(),WKB-1(),CTL-12(),1200℃(),pHS-2(),721-S(),(80W)。:,(AR),[](2008D032)29520095IndustrialWaterTreatmentVol.29No.5May,200957——2009-05,29(5)(AR),(AR),(AR),(AR),(AR);(AR)。1.2AS。:COD15842mg/L,pH=10.8,2570,TKN87.6mg/L,67.7mg/L,SS74mg/L。:COD242mg/L,pH9.2,563,TKN34.2mg/L,12.6mg/L,SS42mg/L。1.3TiO2/PbO2,1。,TiO2/PbO2,60cm、100cm,0.26m3;,、,,;D0.10mm,80W,258nm,E4.3×103μW/cm2;(H2O2),,0.08m3/min。,,CODCOD。1.4TiO2/PbO2V()∶V()=1∶20,pH=5.5,,6min;〔m()∶m()=1∶2〕,;15min,,120℃12min,,、3~4。,8℃/min500℃1h。,,TiO2〔2〕,0.45μm,1mm。22.1CODTiO2/PbO2COD,,,COD,2。2,。TiO2/PbO2,,,80min32%,,82%。:TiO2/PbO2COD〔3〕。2,COD。ln(C0/C)t3。k,(1):ln(C0/C)=kt(1):C0———COD;C———tCOD。1TiO2/PbO210080604020020406080100120/minCOD/%2COD20406080100120()()ln(C0/C)/min3ln(C0/C)4.03.53.02.52.01.51.00.5058——2009-05,29(5)C0220~320mg/L,k=(0.0264±0.0012)min-1。Langmuir-Hinswood(L-H)〔4〕。,TiO2/PbO2。,(2):r=-dc/dt=kr[k0C/(1+k0C)](2):1/r=-dtdc=1/(krk0C)+1/kr(3):r———;kr———;k0———。rC4。4,1/r1/C,,R1=0.990,kr=6.64×10-4mol/(L·min),ka=1.56×103L/mol。,(3),:t=1/krk0[ln(C0/C)+k0(C0-C)](4)t1/2,t=t1/2,(4):t1/2=C0/(2kr)+ln2/k0kr(5)(5),t1/2C0。t1/2C05。R2=0.996,kr=6.42×10-4mol/(L·min),kb=4.93×103L/mol,(3)。2.2CODpHpH,,pHCOD,6。6,pHCOD,CODpH,。pH〔5〕。pH。,pHTiO2/PbO2,TiO2/PbO2。,pHOH-;OH-TiO2/PbO2HO·,OH-TiO2/PbO2HO·。pH,HO·,CODpH〔6〕。pHpH8.0,pHCOD,pH8.0,COD,pH8.0。2.3H2O2,H2O2。H2O2,7。10090807060504030201002468101214pHCOD/%6CODpH,:TiO2/PbO2C/(10-1mmol·L-1)r/(10-1mmol·L-1·min-1)4COD10080604020020406080100120100mg/L200mg/L400mg/L800mg/L/minCOD/%7H2O265432105.0010.0015.0020.0080706050403020100123456789101112C0/(10-1mmol·L-1)t1/2/min5COD59——2009-05,29(5)7:H2O2400mg/L,(800mg/L),,H2O2,h+e-,HO·TiO2;,H2O2HO·,H2O2,HO·,HO·,〔7〕。2.4《》(GB8978—1996),1。1。3TiO2/PbO2,:TiO2/PbO2、pH=8.0、H2O2400mg/L。TiO2/PbO2(H2O2)。,AS90%,COD80%,95%,COD48.4mg/L,;TiO2/PbO2、、,。[][1]HerreraF,LopezA,KiwiJ.Photochemicallyactivateddegrada-tionofreactivedyesStatisticalmodelingofthereactorperformance[J].JournalofPhotochemistryandPhotobiologyA:Chemistry,2000,135(1):45-51.[2]HachemC,BocquillonF,ZahraaO,etal.Decolourizationoftextileindustrywastewaterbythephotocatalyticdegradationprocess[J].DyesandPigments,2001,15(49):117-125.[3],.[J].,1999,11(1):165-169.[4]BossmannSH,OliverosE,GobS,etal.Newevidenceagainsthydroxylradicalsasreactiveintermediatesinthethermalandpho-tochemicallyenhancedFentonreaction[J].J.Phys.Chem.A,1998,102(28):5542-5550.[5]LuMingchun,RoamG,ChenJongnan,etal.Adsorptioncharac-teristicsofdichlorvosontohydroustitaniumdioxidesurface[J].Wat.Res.,1996,30(7):1670-1676.[6]SchiavelloM.PhotocatalysisandEnvironmentTrendsandApplica-tions[M].KluwerAcademicPublishers,1998:245-247.[7],,,.[J].,2000,20(6):772-775.1pHSS/(mg·L-1)COD/(mg·L-1)/TKN/(mg·L-1)/(mg·L-1)6~97010050150.69.242.024256334.212.66.737.048.4286.300.46[](1962—),1983,,2005,。:0732-3581186,13107123700,E-mail:djm3581186@yahoo.com.cn。[]2009-01-23()3t,。2970,9550m2,3t,COD3600t、4500t,800。7400,、,,,、、,,。···············································60——
本文标题:TiO2PbO2复合膜光催化氧化降解染料废水董俊明
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