苯酚废水的电催化氧化生物降解工艺研究

2011,Vol.28No.5Chemistry&Bioengineering77:2011-03-02:(1984-),,,,:;:,E-mail:[e-mail]:10.3969/j.issn.1672-5425.2011.05.020-,,,(,350108):-,,pH,200mgL-1pH10NaCl10gL-150mAcm-2120min,,COD43%,BOD/COD0.7,pH6302%48h,COD30mgL-1-,COD94%:;;;:X703.1:A:1672-5425(2011)05-0077-04,[1~3],[4,5],[6][7,8],Pt,11.1200mgL-1CHI627B,;DF-101S,;PHS-3BpHSHZ-B,;SK1700SL10A,;ET99724BOD,;SPX-250B-Z,1.2,:Al2O3,2minAl2O35mmolL-1K3Fe(CN)60.1molL-1KCl,-0.2~1.0V,100mV,1.3(CV),-,,25,,50mVs-11.4,1(15mm15mm),200mgL-1,100mL,50mAcm-2,NaCl10gL-1,1.0cm,251.5,2d,120r:-/20115781Fig.1Schematicdiagramofexperimentalapparatusmin-1,COD1.6COD:[9],,,(GB11914-89)BOD:BOD,1mL,205d:(HJ503-2009)22.12.1.1pH(2)pH,1~5:8,9,10,11,122pHCVFig.2CyclicvoltammogramsforthePtelectrodeatdifferentpHvalues2,(0~10V),,pH,pH=8,3.61910-6A;pH=12,6.98110-6A,,pH,pH,,pH=8,0.642V,pH=12,0.732V,pH=102.1.2(3)NaCl(gL-1),1~5:1,2,5,10,153NaClCVFig.3CyclicvoltammogramsforthePtelectrodeatdifferentNaClconcentrations3,,,,5.16510-6A5.93310-6A,15%,,,,2.1.3(4)(mVs-1),1~5:10,25,50,75,1004CVFig.4CyclicvoltammogramsforthePtelectrodeatdifferentscanrates4,,,,55,,,Pt,2.2(6,1):-/20115791CODBODTab1ValueofCODandBODatdifferentoxidationtimes/min0306090120COD/mgL-1463.2421.5351.9299.4264.7BOD/mgL-15279103189185BOD/COD0.110.190.290.630.708pH(a)(b)(c)CODFig.8EffectsofpHvalue(a),temperature(b),inoculationamount(c)onCODremovalrate6,pH=10NaCl10gL-150mAcm-2,120min,100%,COD43%,,1,,BOD,BOD/COD0.11,,30min,BOD,BOD/COD0.19,;90min,BOD,;120min,BOD/COD0.70,,2.3(7)7Fig.7UVSpectraatdifferentoxidationtimes7,,234nm286nm,,,30min,260~300nm,[10],,,,,,2.4pHCOD,88a,pH5~7COD,pH6;CODpH:-/2011580,8b,,30COD,82%;3030COD80%8c,COD,2%,;,COD,(pH=6302%),,COD30mgL-1,COD94%3(1)PtCl-,Cl-;pH,,(2)pH10NaCl10gL-150mAcm-2,120min,100%,BOD,,BOD/COD0.70,,COD43%,(3),:pH6302%,2d,COD30mgL-1-,COD94%:[1]ZhangYa,LiQin,CuiHao,etal.Removalofphenolsfromthea-queoussolutionsbasedontheirelectrochemicalpolymerizationonthepolyanilineelectrode[J].ElectrochimicaActa,2010,5(4):7219-7224.[2]ChatzisymeonEfthalia,FierroStephane,KarafyllisIasson,etal.AnodicoxidationofphenolonTi/IrO2electrode[J].CatalysisTo-day,2010,151(1-2):185-189.[3],.[J].,2010,29(6):1019-1026.[4]ComninellisCH,FulgarinC.ElectrochemicaloxidationofphenolforwastewatertreatmentusingSnO2andoes[J].JournalofAp-pliedElectrochemistry,1993,23(2):108-112.[5]WuZucheng,ZhouMinghua.Partialdegradationofphenolbyadvancedelectrochemicaloxidationprocess[J].EnvironScitTechnol,2001,35(13):2698-2703.[6],,.-SBR[J].,2010,36(3):104-107.[7],,,.[J].,2009,29(12):1255-1259.[8],.Pd/CH2O2[J].,2010,31(6):1506-1512.[9].[J].,2007,20(5):82-84.[10]SantosID,AfonsoJC,DutraAJB.BehaviorofaTi/RuO2anodeinconcentratedchloridemediumforphenolandtheirchlo-rinatedintermediateselectrooxidation[J].SeparationandPurif-icationTechnology,2010,76(2):151-157.StudyontheTechnologyofElectrocatalyticOxidation-BiodegradationforPhenolWasterwaterWEIZhen-dong,LIUDa-iyun,LIAOJu-rong,LIUHu-iyong(CollegeofChemistryandChemicalEngineering,FuzhouUniversity,Fuzhou350108,China)Abstract:Thephenolwastewaterwastreatedbyelectrocatalyticoxidation-biodegradationtechnology.TheelectrocatalyticoxidationofphenolonPtelectrodehadbeenstudiedbycyclicvoltammetryandtheeffectsofpHvalue,temperature,inoculationamountonbiodegradationhadbeeninvestigated.Theresultsindicatedthat,forwastewatercontaining200mgL-1phenol,electrocatalyticoxidizedfor120minundertheconditionsasfollows:thepHvalueof10,theNaClconcentrationof10gL-1,thecurrentdensityof50mAcm-2,thephenolwascompletelyremoved,theCODremovalratereached43%andtheBOD/CODratioreached0.70,whichshowedthebiodegradationofthewastewatergotmorefeasible.Furthermore,theCODcontentwasre-ducedto30mgL-1afterbiodegradationfor48hundertheconditionsasfollows:thepHvalueof6,thetem-peratureof30,theinoculationamountof2%.ThetotalremovalrateofCODof94%wasobtainedbytheelectroxidation-biodegradationtechnology.Keywords:phenol;cyclicvoltammetry;electrocatalyticoxidation;biodegradation