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当前位置:首页 > 商业/管理/HR > 企业文化 > CWAO法处理噻螨酮生产废水的催化剂研究王雪源
Studyonthecatalystfortreatingthewastewaterfromhexythiazoxproductionbycatalyticwetairoxidation(CWAO)WangXueyuan(DepartmentofChemistryandChemicalEngineering,YangzhouProfessionalCollegeofIndustrialTechnology,Yangzhou225127,China)CWAO(,225127)[]CuO,MnO2La2O3,(CWAO)(CODCr15730mg/L)。、,。,。230℃,2.5MPapH7.3,,120min,CODCr96.1%,CODCr50.3%。[];;;[]TQ426;X703.1[]A[]1005-829X(2008)10-0044-04Abstract:AkindofcompositecatalystcontainingthemainactivatedcomponentCuO,thesecondactivatedcomponentMnO2andelectronicpromoterLa2O3hasbeenprepared.Itisthecompositecatalystsuitablefortreatinghighlyconcentratedorganicwastewater(CODCr15730mg/L)fromhexythiazoxproductionbycatalyticwetairoxidationtechnology.Theeffectofthepreparationconditions,suchasconcentrationofeverycomponentofsoakedliquid,theroastingtimeandroastingtemperature,etc.onthecatalyticactivityandstabilityhasbeeninvestigated.Thebestpreparationconditionshavebeendetermined.Theresultsshowthat,thecompositecatalystdisplaysrelativelyhighcatalyticactivityandstabilityintheorganicwastewatertreatment.Underthefollowingconditions:temperature=230℃,PO2=2.5MPa,andpH=7.3,96.1%ofCODCrcouldberemovedfromthewastewaterin120min.Butunderthesameconditions,withoutaddingcatalysttothewetairoxidation,theCODCrremovalrateisonly50.3%.Keywords:catalyticwetairoxidation;catalyst;highlyconcentratedorganicwastewater;wastewatertreatment。(CWAO)、,、,CO2、H2ON2,,、。(WAO),、,〔1,2〕。CWAO,,CuO-MnO2-La2O3/γ-Al2O3,CWAO,。11.1,、、、、、,CODCr15730mg/L,pH7.3。2810200810IndustrialWaterTreatmentVol.28No.10Oct.,2008441.2CuO,MnO2La2O3。,Cu(NO3)2、Mn(NO3)2、La(NO3)3,γ-Al2O3,,,,、。1.3CODCr15730mg/L,pH7.3,,,。。CODCr。1。22.12.1.1Mn、Fe、Ni、Cu、Zn〔3,5〕,5%,,T=230℃,PO2=3.0MPapH=7.3,(CODCr15730mg/L),150min,。1。1,Cu,,Cu。2.1.2CuCu,Cu1.0%、2.5%、5.0%、7.5%、10%,Cu,(T=230℃,PO2=2.5MPa,pH=7.3,t=120min,),,2。2,Cu5%,。,,,,。,,,,,〔6〕。Cu5%。2.1.3〔7,8〕。Mn、Fe、Ni、Zn,CuO,Cu-Mn、Cu-Fe、Cu-Ni、Cu-Zn。,2。2,Cu-Mn,Mn。Mn。2.1.4Mn,Cuγ-Al2O3,Cu-Mn,Mn727068666462600246810Cu/%CODCr/%2Cu1CODCrCODCr/(mg·L-1)CODCr/(mg·L-1)CODCr/%Mn157305002.168.2Fe157306181.960.7Ni157305898.862.5Cu157303177.579.8Zn157305930.262.3:CWAO2008-10,28(10)2CODCr/minCODCr/(mg·L-1)CODCr/(mg·L-1)CODCr/%Cu120157304656.170.4Cu-Mn120157301635.989.6Cu-Fe120157304152.773.6Cu-Ni120157303444.978.1Cu-Zn120157303633.676.9:5%。3254967811—;2—;3—;4—;5—;6—;7—;8—;9—145,,Mn,3。3,,Mn,CODCr,Mn5%,;7%,CODCr。,,,,,。Mn5%。2.1.5,〔9〕。LaCe,,4。4,,。La。4,La,,La,Cu,。Lan(La)∶n(Cu)=1∶8。Cu2+,3。2.22.2.1,。100、300、500、700、900、1100℃,4。4,,。6,,。5。5,,Cu2+。700℃,Cu2+,,Cu2+。,6。6。6,700℃,CODCr96.1%,。90858075700246810CODCr/%Mn/%3Mn4/℃1003005007009001100/(m2·g-1)1010957883836605393252015105020040060080010001200/℃Cu2/(mg·L-1)5Cu2+1009590858075020040060080010001200/℃CODCr/%62008-10,28(10)787674727001/101/81/41/2LaCen(M)∶n(Cu)CODCr/%4MLaCe3Cu2+n(La)∶n(Cu)01∶101∶81∶41∶2Cu/(mg·L-1)1.32.02.38.013.9462.2.2700℃,1、3、5、7、9h,,7。7,5h,,,,7h。,,,,,。,,,5h。2.3700℃,5h,,。8。8,,CODCr96.1%,,CODCr,7,CODCr86%。。2.4,CuO-MnO2-La2O3/γ-Al2O3,CODCr15730mg/L,,(),9。9,120min,CWAOCODCr96.1%,WAOCODCr50.2%,。3(1)CuO-MnO2-La2O3/γ-Al2O3:700℃,5h,Cu5%、Mn5%、n(La)∶n(Cu)=1∶8。。(2)CuO-MnO2-La2O3/γ-Al2O3,230℃,2.5MPa,pH7.3,120min,CODCr97.4%,WAO91.4%。[][1],.[J]..2001,32(6):5-7.[2]DebellefontaineH,FoussardJN.Wetairoxidationforthetreatmentofindustrialwastes.Chemicalaspects,reactordesignandindustrialapplicationsinEurope[J].WasteManagement,2000,20(1):15-25.[3]VedprakashsM.Wetairoxidation[J].Ind.Eng.Chem.Res.,1995,34(2):2.[4],,.[J].,1998,11(4):62-64.[5]LevecJ.Catalyticoxidationoftoxicorganicsinaqueoussolution[J].AppliedCatalysisB:Environmental,1990,63(7):1-5.[6]R.[M].:,1990:116.[7],,,.[J].(),2004,26(1):63-67.[8],,,.[J].,2004,24(9):30~32.[9],,,.[J].,2006,26(3):213-217.9894908682780246810/hCODCr/%7969492908886840246810CODCr/%8CODCr/hCODCr/%9WAOCWAO100806040200WAOCWAO0.51.01.52.02.5[](1970—),2008,,。:13665203560,E-mail:wxy10000@21cn.com。[]2008-04-28:CWAO2008-10,28(10)47
本文标题:CWAO法处理噻螨酮生产废水的催化剂研究王雪源
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