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25320083精细化工FINECHEMICALSVol.25,No.3Mar.2008＊卢 永,严莲荷＊,李 兵,周申范(, 210094):,pH、、。,COD、,66.07%。:pH=4.0、2.0min、500g/L、40min。,COD40%～50%,。:;;;;:X703;X505 :A :1003-5214(2008)03-0269-04PretreatmentofCokingWastewaterbyCopperizedIronInternalElectrolysisSystemLUYong,YANLian-he＊,LIBing,ZHOUShen-fan(WaterTreatmentInstitute,NanjingUniversityofScienceTechnology,Nanjing210094,Jiangsu,China)Abstract:Thecopperizedironinternalelectrolysissystemwasusedforthepretreatmentofcokingwastewater.TheremovalrateofCODcanreach66.07%,higherthantraditionalFe-CsystemandFe-Cusystem.Theoptimumconditionswere:pH=4.0,timeofcopperization2.0min,doseofcopperizediron500g/Landtreatmenttime40min.TheCODremovalrateoftheeffluentofcontinuousflowexperimentwas40%～50%,withouttheticklerofagglomeration.Keywords:copperizediron;internalelectrolysissystem;pretreatment;cokingwastewater;watertreatmenttechnology ,、、、、,。,,Fenton-[1]、[2]。[3,4],[5]、[6]、[7～9]、[10]、[11]。,,,pH。,Cu/Fe[12],Al/Fe[13],Ni/Fe[14],Cu/Fe。。,pH、、。1 1.1 、、、。,,,:Fe-2e※Fe2++ne※Fe2+Fe3+,＊:2007-09-19;:2007-11-14: (1983-),,,,,:。:,,,:025-84315609,E-mail:luynjust@yahoo.com.cn。:2007821～25,101———2007、,。DOI:10.13550/j.jxhg.2008.03.019:O2+H2O+4e4OH-4Fe2+-4e4Fe3+Fe(OH)3,Fe(OH)3,。,·H、·Fe2+,,,,。1.2 。CuSO4、Ca(OH)2,AR。1.3 COD:GB11914—89。:w(NaOH)=10%30min,2～3;w(H2SO4)=5%3～5min,2～3;5%,;2～3,。:1000mL,500mL,Ca(OH)2pH7～8,15min,COD。:pH、TD。。,1。1 Fig.1 Flowdiagramandreactor1 Table1 OrthogonalexperimentaldesignpHT/minD/(g/L)1230100234525034604002 2.1 250g、250g+10g、w(CuSO4)=5%2min250g,500mLpH=4.060min,COD2。2 Fig.2 Resultsofcomparisontests,。,,,,。2.2 pHw(CuSO4)=5%2min250g,500mLpH=2.5、3.0、3.5、4.0、4.5、5.0、6.040min,COD3。3 pHFig.3 EffectofpHonCODremovalratepH=2.5,COD,pH,COD,pH=2.5～5.0,,pH5.0,。pHFe2+,。,Fe2+Fe3+。Fe(OH)2Fe(OH)3·270·精细化工 FINECHEMICALS 25 。pHFe2+Fe3+,。2.3 1.30.25、0.5、1.0、2.0、3.0、5.0min250g500mLpH=3.040min,COD4。4 Fig.4 EffectofcopperizationtimeonCODremovalrate,COD。,,,,,COD。2.4 2min25、50、100、200、300、400、500g500mLpH=3.040min,COD5。5 Fig.5 EffectofcopperizedirondosageonCODremovalrate,,COD,500g/L,,COD。500g/L。2.5 2min250g500mLpH=3.015、20、25、30、35、45、60min,COD6。45min,COD64.29%,,COD。40min。6 Fig.6 EffectoftreatmenttimeonCODremovalrate2.6 1.3,2。,COD,pH。、,:500g/L;pH=4;40min。2 Table2 TheresultoforthogonalcombinationexperimentpHt/min/g/%111148.21212257.14313362.50421251.79522357.14623149.11731349.11832139.29933248.21K1167.85149.11136.61K2158.04153.57157.14K3136.61159.82168.75k155.9549.7045.54k252.6851.1952.38k345.5453.2756.25R10.413.5710.71pH500g/L;pH=4;40min2.7 ,:pH=4.0,2min,40min。1。7、8。7h,COD45%。·271·3 ,:9d,40%～45%。,,[15]。 ,1000/t,2kg,2.5～3.0/t。10kg,16/kg,1160/t,1.4kg,2.2～2.6/t。。3 (1),COD、,66.07%。(2):pH=4.0,2min,500g/L,40min。(3),COD40%～50%,,,。:[1] ,, ,.P204[J].,2006,30(1):91-92,104.[2] , .[J].,2003,31(9):11-13.[3] ,,,.Fenton-[J].,2006,29(10):72-75.[4] PengLai,Hua-zhangZhao,ChaoWang,etal.Advancedtreatmentofcokingwastewaterbycoagulationandzero-valentironprocesses[J].JournalofHazardousMaterials,2007,147,(1-2):232-239.[5] ,,.[J].,2006,26(9):48-50.[6] ,,,./H2O2[J].,2006,26(9):28-30.[7] , , ,.-[J].,2005,18(2):74-77.[8] ,,,.-[J].,2007,24(5):496-499.[9] HainingLiu,GuotingLi,JiuhuiQu,etal.DegradationofazodyeAcidOrange7inwaterbyFe0/granularactivatedcarbonsysteminthepresenceofultrasound[J].JournalofHazardousMaterials,2007,144(1-2):180-186.[10] HefaChenga,WeipuXub,JunliangLiu,etal.Pretreatmentofwastewaterfromtriazinemanufacturingbycoagulation,electrolysis,andinternalmicroelectrolysis[J].JournalofHazardousMaterials,2007,146(1-2):385-392.[11] ,,,.[J].,2003,20(2):94-97.[12] LMMa,ZGDing,TYGao,etal.DiscolorationofmethyleneblueandwastewaterfromaplantbyaFe/Cubimetallicsystem[J].Chemosphere,2004,55(9):1207-1212.[13] JewelAGGomes,PraveenDaida,MehmetKesmez,etal.ArsenicremovalbyelectrocoagulationusingcombinedAl-Feelectrodesystemandcharacterizationofproducts[J].JournalofHazardousMaterials,2007,139(2):220-231.[14] ,,.Ni-Fe[J].,2007,38(4):39-42.[15] ,, ,.-[J].,2006,24(3):26-28.(268)[5] ,,,.()[J].,2005,30(4):53-58.[6] ,,.[J].,1999,28(1):9-12.[7] .[J].,1999,15(6):16-18.[8] ,, ,.WRF-1[J].,2004,14(1):33-36.[9] .[M].:,2004.4:72-73.[10] ,.[J].,2002,17(3):21-24.·272·精细化工 FINECHEMICALS 25