电化学降解焦化废水的研究

电化学降解焦化废水的研究田禹1,王强1,李捍东2,于秀娟1,凌海波3,金蓉1(1.哈尔滨工业大学,黑龙江哈尔滨150090;2.中国环境科学研究院,北京100012;3.武汉大学,湖北武汉430072):选用Ti/Ir2O3/RuO2为阳极,C-PTFE气体扩散电极为阴极协同降解焦化废水结果表明,电化学方法对焦化废水具有显著的氧化降解作用通过实验,考察了苯酚浓度电流密度电解质浓度pH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;协同作用;焦化废水:X703:A:1006-8759(2005)02-0034-03STUDYOFDEGRADATIONOFCOKINGWASTEWATERBYELECTROCHEMICALMETHODTIANYu1,WANGQiang1,LIHan-Dong2,YUXiu-Juan1,LINGHai-Bo3,JINGRong1(1.HarbinInstituteofTechnology,Harbin150090,China;2.ChineseResearchAcademyofEnvi-ronmentScience,Beijing100012,China;3.WuhanUniversity,Wuhan430072,China)Abstract:ByusingTi/Ir2O3/RuO2asanodeandgas-diffusingelectrodeC-PTFEascathodetotreatcokingwastewater,wefindthatelectrochemicalmethodiseffectiveindegradingcokingwastewater.Throughexperiments,theremovalefficienciesunderdifferentconditions,suchascon-centrationofphenol,currentdensity,concentrationofelectrolyteandpHarestudied.Atlastthebestconditionsareensured.Themaindevelopingdirectionofthetechnologyispointout.Keywords:wastewatertreatment;electrochemicalmethod;cokingwastewaterEnergyEnvironmentalProtectionVol.19,No.2Apr.,200519220054:2004-10-08,,,,,,,,,,,.,,COD200~30mg/L100mg/L,Ti/Ir2O3/RuO2,C-PTFE,,,/(mg#L-1)100200300/%999172111.1Ti/Ir2O3/RuO2;C-PTFE();();721();DH1718E-4();SP-780();TOC()1.21,100ml,,,1.3,,(1-1),(1-2)R+MOx(HO#)yCO2+MOX+ZH++Ze-(1-1)R+MOX+1yRO+MOX(1-2)MOX(HO#)MOX+1,HO#,,,(Ti/Ir2O3/RuO2)DSA,HO2#HO#,,,,/0/0/0[17],O2,,O2H2O2(H2O2)[5](1-3),(1-4),(1-5):O2+2H++2e-yH2O2(1-3):O2+H2O+2e-yHO2-+OH-(1-4)HO2-+H2O2+2e-yH2O2+OH-(1-5)22.1100mg/L,200mg/L,300mg/L,11,,,,2.218mA/cm2,25mA/cm2,32mA/cm2,39mA/cm2,46mA/cm2,,22,,,18mA/cm2,:15.2V16e;46mA/cm2,:24.2V41e39mA/cm22.30.01mol/L,0.02mol/L,0.03mol/L,0.05mol/L,0.1mol/L,/(mA#cm-2)1825323946/%3058821001002田禹等电化学降解焦化废水的研究#35#pH2712/%91.710091.24pH,33,,0.01mol/L0.02mol/L,100min100%,0.1mol/L,100min,68%,,,,,,0.02mol/L2.4pH2,7,12pH,,44,pH,pH,:,pH12,100min91.9%,,,pH2,100min44.8%,,,pH,3,:(1),;(2),;(3)pH,;(4),,:100mg/L,I=1.1A(39mA/cm2);0.02mol/L;pH,100min,100%,TOC82.8%,COD85.7%(COD300mg/L)CO2H2O;,,;,,,,,:,,,,,:O2,;H2O2H2OO2:H2,;,,,,COD,,,,/(mol#L-1)0.010.020.030.050.1/%1001009582683#36#192