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:2002-11-09.:(1979~),,;:.E-mail:KEKYMARK@etang.comTiO2徐长城1,高原2(1., 650093;2., 650041):焦化废水成分复杂、多变,对环境有较大危害,是一种很难处理的工业废水,已经引起了国内外学者广泛关注.文中选用TiO2作为光催化剂,光催化降解焦化废水,结果表明,TiO2对焦化废水具有显著的光催化降解作用.通过实验,考察了焙烧温度、光照时间、溶液初始pH值、初始溶液浓度及投加氧化剂等因素对苯酚去除效率的影响,从而确定处理的最佳处理条件.最后,还指出了该技术所需要研究的主要技术方向.:污水处理;光催化;TiO2;焦化废水:X506:A:1007-855X(2003)04-0109-04StudyofDegradationofCharringWasteWaterbyTiO2PhotocatalystXUChang-cheng1,GAOYuan2(1.FacultyofEnvironmentalScienceandEngineeringKunmingUniversityofScienceandTechnology,Kunming650093,China;2.BureauofenvironmentandsanitationinPanlongDistrit,Kunming650041,China)Abstract:Theconstituentsofcharringwastewaterareverycomplicated,whichisgreatlyharmfultotheenviron-mentandisdifficulttodealwith.Manyresearchershavepaidanattentiontothispollutant.ByusingTiO2asthephotocatalysttotreatcarbolicacidbearingwastewater,itturnsoutthatTiO2cantreatthecharringwastewater.Throughexperiments,theremovalefficienciesunderdifferentconditions,suchasbakedtemperature,timeoflight,pH,concentrationandoxidantarestudied.Atlastthebestconditionsofthetreatmentareensured.Themaindevelopingdirectionofthetechnologyispointedout.Keywords:wastewatertreatment;photocatalysis;TiO2;charringwastewater0,.,、、、、、、、、、、、,、,,,,.、,.、,,、、、,,..TiO2,,TiO2,.28420038 ()JournalofKunmingUniversityofScienceandTechnology(ScienceandTechnology)Vol.28 No.4 Aug.2003DOI:10.16112/j.cnki.53-1223/n.2003.04.03011.1TiO2(200nm,);();721A();(500mL);KDM(,);GGZ3000(300W,);JJ—1()1.2.3.4.5.6.7.8.11.21.:—TiO2TiO2()550℃1h,.1∶50.,,TiO2(0.5g);,.,,;,,、.22.1450℃,500℃,550℃,650℃,1h.250mL,200mL,,5h.COD.1.1 /℃450500550600/%25.728.342.321.9COD/%19.823.129.317.7,550℃COD.TiO2,TiO2.TiO2(、),TiO2,TiO2,TiO2TiO2,,..,TiO2.,550℃COD,600℃,600℃,TiO2,550℃,TiO2,.,TiO2TiO2.2.2550℃1h,TiO2.250mL,200mL,,,,.2.2 /h2456/%26.434.235.135.7,2h,4h,5h,6h,5h,,.,,,110() 28,.2.3pH250mL,200mL,pH2.0,4.0,7.0,10.0,550℃,,5h,2pH.2.TiO2,pH.,pH7,,,,.,,,R+O-2,.,,,—,TiO2,.pH,.pHTiO2,,,.pHTiO2pH,TiO2.,pH.,pH.,,TiO2pH2.0.2.4250mL,,20mg/L,30mg/L,40mg/L,60mg/L,80mg/L.550℃,,5h..3.3 /mg·L-12030456080/%64.253.848.740.235.13,,,.,,,.2.5250mL,200mL(35mg/L),2mL,3mL,4mL,5mLH2O2,550℃,,5h,.4.4 /mL2345/%45.857.471.680.14,,.H2O2,TiO2.,TiO2,,TiO2,H2O2,OH·,.3,:1114 ,:TiO21)—TiO2,550℃,60min.2)TiO2,5h.3)TiO2,pH,pH.4)TiO2,,TiO2.5),.TiO2、,.,.TiO2,:1).,,,,.2).,,、.3)..4).5).,.:[1] ,.TiO2[J].,2000,20(4):10~13.[2] ,.TiO2—[J].,1999,28(4):11~13.[3] ,,,.TiO2[J].,2000,20(7):20~24.[4],.[J].,1999,19(3):145~147.[5],,,.TiO2[J].,2000,20(9):8~10.[6].TiO2[J].,1998,18(12):39~42.[7],.TiO2[J].,1999,18(6)597~583.[8],.TiO2[J].,2000,28(8):36~45.[9] , .[J].,1999,19(5):16~19.[10] ,,,TiO2[J].,1997,18(4):1~4.[11] ,.TiO2[J].,2000,21(3):71~73.[12].[J].,2001,21(3):48~49.[13]./—[J].,1995,15(6):343~346.[14].[J].,1992,12(3):141~146.[15],.TiO2[J].,2001,21(4):45~48.[16] ,,,,,.TiO2[J].,2001,22(4):660~662.112() 28
本文标题:TiO2光催化降解焦化废水的研究徐长城
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