搜索
1,1,1,2,1,3,1(1.,116023;2.,116024;3.,266400)[],CuO/2Al2O3,COD:140,1h,CODCr93.2%88.4%160,1h,CODCr93.4%90.1%140,1h,BOD5/CODCr0.08,;,BOD5/CODCr0.18,CuO/-Al2O3,BOD5/CODCr0.30,,CuO/-Al2O3[];;;[]X703.1[]A[]1005-829X(2002)06-0019-04StudyofcatalyticwetairoxidationtobeusedinthepretreatmentofphenolwastewaterCHENYong2jun1,DOUHe2rui1,YANGMin1,GAOXi2yan2,WUMing1,CUIGui2lin3,SUNCheng2lin1(1.DalianInstituteofChemicalPhysics,ChineseAcademyofSciences,Dalian116023,China;2.DalianUniversityofTechnology,Dalian116024,China;3.QingdaoHengchangChemicalIndustrialCompany,Qingdao266400,China)Abstract:Comparedwithwetairoxidation,catalyticwetairoxidationhasbettereffectontreatingwastewaterundermildconditions.Twokindsofcatalystareprepared:CuO/2Al2O3andACcatalysts.Firstly,theeffectofthesecatalystsoncatalyticwetairoxidationtobeusedinphenolwastewatertreatmentunderdifferentconditionsisevaluated.TheresultsshowthatraisingpHvalueinthesolutionhasdisadvantageouseffectontheremovalofCODCrfromphenolwastewater.AstoCuO/2Al2O3andACcatalysts,theCODCrremovalrateishigherundermildconditions:after1hreactiontime,at140,theCODCrremovalratereaches93.2%and88.4%respec2tively;andat160,theCODCrremovalratereaches93.4%and90.1%respectively.Butat140,afterthephenolwastewateristreatedbywetairoxidationfor1h,theBOD5/CODCrreachesonly0.08.Theeffectofdif2ferentbiodegradabilityisresultedfromusingdifferentcatalysts.BOD5/CODCrreaches0.30byusingcatalystCuO/2Al2O3,whileBOD5/CODCrreaches0.18byusingcatalystactivatedcarbonascatalyst.ThereforeusingCuO/2Al2O3ascatalysttotreatphenolwastewatercangetthepretreatmenteffectunderlowertemperature.Keywords:catalyticwetairoxidation;phenolwastewater;pretreatment;biodegradability,1,,,(WAO),,,,24(CWO)3,,:,,,,,COD,,9120026226IndustrialWaterTreatmentJun.,2002Vol.22No.6©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.510,S.H.LinT.S.Chuang11,:200,,200,,,,,CuO/-Al2O3AC,,,11.11,FYX-1:1000mL,19.6MPa,350,1.5kW,123W,500r/min,1Cr18Ni9Ti,11.21.4g/L,COD3339mg/L,pH6.0,pH300mL,,,5.0MPa,5min,0.1MPa,,0.1MPa3,,,(,3),,,,,2.5g,701001.3COD:COD,-,,,,CODCrBOD5:BODTrak,BOD(201)pH6.57.5pH:pH1.4CuO/-Al2O3-Al2O317.4%Cu(NO3)2,12h1204h,,5004h,,,70100m(CuO)m(-Al2O3)=10%(),12015min,,,10%24h,,35,1001h,,,110,,70100,1203050min,22.12.1.12,CODCrt2CODCrt2CODCr022002-06,22(6)©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,160,30min,CODCr1h,140160180,CODCr83.7%85.4%90.2%2.1.2pH3pHCODCrt3pHCODCrt3,pHCODCr,,pH,CODCr2122.2.1CuO/2Al2O34CuO/2Al2O3COD4CuO/2Al2O3CODCr4,CuO/2Al2O3,,CuO/2Al2O3,CODCr140,1h,CODCr93.2%;160,1h,CODCr93.4%2.2.25CODCrt5,(AC),5CODCr,,,CODCr140,CODCr88.4%;160,CODCr90.1%2.213pH(),CuO/-Al2O3pH11CODCr,:,pHCODCr2.214CuO/-Al2O34,CuO/-Al2O3,1h,140160,CODCr,,CODCr,1601402.215(),140160,CODCr160,1hCODCr90.1%160,,,CODCr2.3140111401hBOD5/(mgL-1)CODCr/(mgL-1)BOD5/CODCr28.83450.08CuO/-Al2O3622100.30AC20.81930.11122002-06,22(6)©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1,140,1h,BOD5/CODCr0.08,,,CuO/-Al2O3,,BOD5/CODCr0.11,,CuO/-Al2O3,1h,0.312,BOD5/CODCr0.3,,140,CuO/-Al2O33(1)140(2)CuO/2Al2O3,140,CODCr93.2%88.4%,160,CODCr93.4%90.1%(3)140,CuO/2Al2O3,BOD5/CODCr0.30.11,,CuO/2Al2O3[][1]1[M].:,2000:282.[2]VedprakashSMishra,VijaykumarVMahajani,JyeshtharajBJoshi.WetAirOxidation[J].Ind.Eng.Chem.Res.,1995,34:248.[3]YuriiIMatatov2Meytal,MosheSheintuch.CatalyticAbatementofWaterPollutants[J].Ind.Eng.Chem.Res.,1998,37:309326.[4]SeiichiroImamura.CatalyticandNoncatalyticWetOxidation[J].Ind.Eng.Chem.Res.,1999,38:17431753.[5]DionissiosMantzavinos,AnderewGLivingston,RolfHellenbrand,etal.WetAirOxidationofPolyethyleneGlycols;Mechanisms,In2termediatesandImplicationsforIntegratedChemical2biologicalWastewaterTreatment[J].ChemicalEngineeringScience,1996,51(18):42194235.[6]EmiliaOtal,DionissiosMantzavinos,MarisVDelgado,etal.Inte2gratedWetAirOxidationandBiologicalTreatmentofPolyethyleneGlycol2containingWastewaters[J].I.Chem.Technol.Biotechnol.,1997,70:147156.[7],,,1[J].,1990,9(3):1319.[8]1[J].,1993,12(5):408414.[9]WilhelmiAR,ElyRB.ATwo2stepProcessforToxicWastewaters[J].Chem.Engrg.,1976,16:105109.[10]HaoOJ,PhullKK,ChenJM.WetOxidationofTNTRedWa2terandBacterialToxicityofTreatedWaste[J].WaterRes.,1994,28(2):283290.[11]LinSH,ChuangTS.WetAirOxidationandActivatedSludgeTreatmentofPhenolicWastewater[J].Environ.Sci.Health,1994,A29(3):547564.[12],1[M].:,1998:221.[](1968),1994,,[]2001-09-14,,,,,,,,:():0519-5711235:0519-5712858:213127,:222002-06,22(6)©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.