短程硝化铁炭微电解工艺处理焦化废水

2009291ENVIRONMENTALPROTECTIONOFCHEMICALINDUSTRY[]2008-07-02;[]2008-09-17[](1983),,,,15841290637,[e-mail]:,13314120036,[e-mail],,,,(,114051)[],,:pH3.0,70min,[m(Fe)m(C)]1.01.3,pH9.0,TN8.0%,NO-2-N57.0%,TN50.0%[];;;;[]X703[]A[]1006-1878(2009)01-0047-04TreatmentofCokingWastewaterbyShortcutNitrification-Iron2carbonMicro2electrolysisProcessSuYing,ShanMingjun,ShenXue,CaoTianyu,LiYang(DepartmentofEnvironmentalEngineering,UniversityofScienceandTechnologyLiaoning,AnshanLiaoning114051,China)Abstract:Usingwastecorundum2graphitepowderandscrapironaselectrodes,thedenitrificationofcokingwastewaterwascarriedoutseparatelybyiron2carbonmicro2electrolysisprocessorshortcutnitrification-iron2carbonmicro2electrolysisprocess.Theexperimentalresultsshowthatthedenitrificationeffectbyshortcutnitrification-iron2carbonmicro2electrolysisprocessisbetterthanthatbyiron2carbonmicro2electrolysisprocess.UndertheoptimumreactionconditionsofwastewaterpH3.0,reactiontime70min,massratioofFetoC1.01.3andcoagulationpH9.0,theremovalrateofTNbyiron2carbonmicro2electrolysisprocessis8.0%,howevertheremovalratesofNO-22NandTNbyshortcutnitrification-iron2carbonmicro2electrolysisprocessare57.0%and50.0%,respectively.Keywords:shortcutnitrification;micro2electrolysis;cokingwastewater;denitrification;wastewatertreatment[1,2],,,,,,,,,[3]74©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(TN)360.0430.0mg/L,pH9.0;SK2-01:;HLJ100:1.2,,pH1.06.0,1(0.71.9),180r/min,2090minNaOHpH8.09.5,,NH+4-NNO-2-NNO-3-NTN111;2;31.31.3.1[4,5],,,,,:Fe-2eFe2+(1):2H++2eH2(2)[6]:O2+4H++4e2H2O(3):O2+2H2O+4e4OH-(4)1.3.2H+H+,NO-2-NNO-3-N[7]1.3.3Fe2+Fe2+,Fe(OH)2Fe(OH)3,Fe2++2OH-Fe(OH)2(5)4Fe2++8OH-+O2+2H2O4Fe(OH)3(6)Fe(OH)2Fe(OH)3,,[8,9]1.3.4pH[m(Fe)m(C)],NO-2+4H++3e1/2N2+2H2O(7)NO-3+6H++5e1/2N2+3H2O(8)pHm(Fe)m(C),NO-2+8H++6eNH+4+2H2O(9)NO-3+10H++8eNH+4+3H2O(10)22.1pHpH22:pH1.0,TN32.0%,TN74.8%,NO-2-N100%;pH,,pH9.0,pH1.02.5,34.60/m3;pH5.86.5,pH1.02.5,16.00/m3,pH3.0,TN3.0%,TN32.1%,NO-2-N84©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,;70min,,TN3.5%,TN32.1%,NO-2-N25.5%;,,70min,,,N2,,,NH3-N,,,Fe2+,Fe3+,2.3pHpH44,pH9.0,TN7.6%,-TN49.1%,NO-2-N56.0%pH,,[10,11],,,NaOH2.4m(Fe)m(C)m(Fe)m(C)55:m(Fe)m(C)1.0(1.21.5),NO-2-NTN;m(Fe)m(C)1.01.3,,TN6.0%,-TN51.0%,NO-2-N57.0%2.5pH3.070minm(Fe)m(C)1.01.3pH9.0,-,66:TN385.0mg/L,94©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.),:pH3.0,70min,m(Fe)m(C)1.01.3,pH9.0,TN8.0%,NO-2-N57.0%,TN50.0%b),,1,,.USAB.,2008,28(4):3443472,,.SBR.,2007,27(6):5395423,,.Fenton.,2008,28(8):34374,..,2002,3(4):69725,,..,1998,17(3):26276..:,2004.50957JohnsonTL.Kniticsofhalogenatedorganiccompounddegradationbyironmetal.EnvironSciTechnol,1996,30:263426408JinXie.Applicationofironchipsinindustrywastewater.IndWasterTreat,1989,9(6):73769ChiPaohuang,HuangWenwang,ChuPeichun.Nitratereductionbymetallicron.WaterRes,1998,32(8):2257226410,,..,2006,32(4):687011,,..,2007,20(1):2933(),:,1000mg/L,,50mg/L,,,,,/CN101234959,2008-08-0605©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.