二氧化氯催化氧化用催化剂的制备与应用贺启环

　　:0427-7104(2003)03-0324-05贺启环1,方　华2,高蓉菁3,王　琼1(1.,,210094;2.,,210096;3.,,210036)　:.Cu2+:w(cu2+)=4%,300～350℃,2h;COD3500mg/L、10GR,COD80%,97.8%,BOD5/COD0.070.41;.:;;:O643.3　　　　:A(ClO2)ClO2,[1],.,,,,[2].,[3,4],———.GR.1　1.1　,,.:,,,.:Cu2+,(ZZ-30),,,.1.2　,200cm3(100g),,100mL.COD,ηCOD.GR,10,COD3500mg/L,BOD5250mg/L,BOD5/COD0.07,.:2003-01-22::(1943—),,.42　320036　　　　　　()JournalofFudanUniversity(NaturalScience)　　　　　Vol.42No.3Jun.2003DOI:10.15943/j.cnki.fdxb-jns.2003.03.0172　2.1　pH1　pHCODFig.1　RelationshipbetweenpHandCODremovalratio—◇—1#(pH=2);—◆—2#(pH=4);—△—3#(pH=6);—★—4#(pH=8)pH,,pH.:w(Cu2+)=6.5%,450℃,4h.,pH2(1#)、4(2#)、6(3#)、8(4#),30(:ρ(ClO2)=1000mg/L,60min),pHCOD.1.11#(pH=2),,pH2.2.2　2　Fig.2　RelationshipbetweenpretreatmentofcarrierandCODremovalratio—◇—1#(2mol/L);—◆—2#(1mol/L);—△—3#(0.5mol/L);—★—4#()2mol/L(1#)、1mol/L(2#)、0.5mol/L(3#)HNO3,(4#)2.1,20(:ρ(ClO2)=1000mg/L,60min),,2.2,4,4#();,H+,,.,;,,,,.,,..2.3　,300℃(1#)、350℃(2#)、400℃(3#)、450℃(4#).26(:ρ(ClO2)=1000mg/L,60min),COD,3.3,1#2#,,COD,300～350℃.3253　　　　　　　　　　　　:2.4　Cu2+w=2%(4#)、w=4%(3#)、w=6.5%(2#)、w=9%(1#)4,24h,300℃,,4.18(:ρ(ClO2)=1000mg/L,60min),COD,4.3　CODFig.3　RelationshipbetweentemperatureofcalcinationandCODremovalratio—◇—1#(300℃);—◆—2#(350℃);—△—3#(400℃);—★—4#(450℃)4　CODFig.4　RelationshipbetweenconcentrationofsleepingliqourandCODremovalratio—◇—1#(9%);—◆—2#(6.5%);—△—3#(4%);—★—4#(2%)4:2#(w=6.5%)、3#(w=4%)4#(w=2%),1#(w=9%).,、,,;3#,,w(Cu2+)=4%.2.5　5　CODFig.5　RelationshipbetweentimeofcalcinationandCODremovalratio—◇—1#(1h);—◆—2#(3h);—△—3#(4h);—★—4#(5h):4%,300℃,2h(1#)、3h(2#)、4h(3#)、5h(4#)4,4.16(:ρ(ClO2)=1000mg/L,60min),COD,5.5:,1#(2h);,,,,,,.2h.2.6　,:pH2,ρ(ClO2)=800mg/L,45～60min.COD80%,97.8%,BOD5/COD0.41.1,326()　　　　　　　　　　　　　　　　42().1.,COD80%,kgCOD3.72,.1　Tab.1　Economicalandtechnicalcompareofdifferentprocessρ(ClO2)/(mg·L-1)η/%Cat()Cat()V()/(·(kgCOD)-1)Cat()Cat()60021.350.764.614.614.463.4880036.873.780.57.564.103.72100057.773.882.06.025.124.56120055.972.785.47.476.225.26140059.871.786.98.137.886.052.7　,,,6.6　CODFig.6　RelationshipbetweenusingtimeofcatalystandCODremovalratio6:,COD,;8,,COD,,,;50(5L/100g),COD,70%,810%.2.8　,,.56、.、、,;.,,,,COD80%,,.,5%(20),646/;COD3500mg/LGR,COD80%,23.32;COD70%,19.01,,.:,Cu2+4%,300～350℃,2h;COD3500mg/LGR,COD80%,97.8%,BOD5/COD0.070.41;.3273　　　　　　　　　　　　::[1]　,.[M].:,2001.[2]　,　.[J].环境污染治理技术与设备,2002,3(9):63-65.[3]　,.[J].环境污染与防治.2001,23(3):134-135.[4]　,.[J].染料工业,2002,39(2):47-48.ThePreparationandApplicationofCatalystforChlorineDioxideCatalyticOxidationHEQi-huan1,FANGHua2,GAORong-jing3,WANGQiong1(1.DepartmentofEnvironmentalScience&Engineering,NanjingUniversityofScience&Technology,Nanjing210094,China;2.DepartmentofEnvironmentalEngineering,SoutheastUniversity,Nanjing210096,China;3.TheKeyLaboratoryofEnvironmentalEngineeringofJiangSu,Nanjing210036,China)Abstract:Thepreparationconditionsandpropertiesofcatalystforchlorinedioxide(ClO2)catalyticoxidationwerestudied.Theresultsshowedthat4%dip-liquid,300—350℃and2hoursofcalcinationweretheoptimumpreparationconditionsforcatalysts,whichloadedCu2+oncommoditycatalystcarrier.TheCODremovalratioexceeded80%,colorremovalratioreached97.8%andBOD5/CODrosefrom0.07to0.41,whentreatingAcidBrilliantScarletGRdyestuffwastewater,theCODofwhichwas3500mg/Landcolorwas100000times,byClO2catalyticoxidation.ThestudyofcatalystlifeandcatalystrecoveryilluminatedthatClO2catalyticoxidationwasanpracticalandefficientmethodtotreatrefractorywastewater.Keywords:catalyst;chlorinedioxide(ClO2);catalyticoxidation328()　　　　　　　　　　　　　　　　42