Fenton氧化法去除皮革废水中单宁的试验研究栗玉鸿

、、、、、、COD[1-2]。COD200mg·L-1GB8978－19961。。、、、[3]。Fenton。FentonFenton。11.1FeSO4·7H2O2、NaOH、H2SO4、H2O230%、。1.21L150mg·L-1COD181mg·L-1pHpH7～815minCOD。1.3CODHZ-HJ-SZ-0107。C76H52O4617001mol2112g1mg·L-1COD1.242mg·L-1。150mg·L-1COD186.3mg·L-1COD181mg·L-1。2FentonpH、、、。。pHCOD。Fenton112111.1500902.150090、Fenton。pH=330%H2O21mL·L-1n[Fe2+]n[H2O2]=1:2035℃60min。FentonpHCOD。FentonX794A1000-3770(2011)[e-mail]-mail:[e-mail]3712201112TECHNOLOGYOFWATERTREATMENTVol.37No.12Dec.,201168DOI:10.16796/j.cnki.1000-3770.2011.12.0162.1pHFenton。Fe2+。pH3FentonFe2+Fe(OH)+[4]。pH4pH[5]。[6]Fe2+Fenton。RichardGZepp[7]-pH、Fe2+、Fe2+11。0Fenton。3FentonpHFenton。pHH3O2+Fe2+Fe3+[8]。H2O21mL·L-1、n[Fe2+]n[H2O2]120、、20℃pHCOD1。1pH3COD70%。pHCOD。COD50%。2.2FentonFenton。1molH2O216g2.125mgCOD1mgH2O230%1.11mg·mL-11mgCODH2O26.38×10-3mL。COD181mg·L-1H2O21.15mL·L-1H2O21mL·L-1。pH3、n[Fe2+]n[H2O2]120、、20℃H2O22。2H2O21mL·L-170%。FentonFenton。H2O21/2mL·L-1COD70%H2O2。H2O2COD。10%。TakuyaMaezono[6]00COD。H2O21mL·L-1COD55%。H2O2·H2O+pH3Fenton[9]。·OHCOD[4]。2.3n[Fe2+]n[H2O2]Fe2+Fenton[10]Fe3+Fe2+Fe2+Fe3+Fenton[11]。。MarcoPanizza[5]1。1pHCODFig.1EffectofinitialsolutionpHontheFentondegradationofCODgeneratedbytannin010203040506070304050607080
%min2H2O2CODFig.2EffectofH2O2dosageontheFentondegradationofCODgeneratedbytannin01020304050607001020304050607080
%minFenton69pH3、H2O21mL·L-1、、20℃n[Fe2+]n[H2O2]3。3n[Fe2+]n[H2O2]1/20。H2O2COD30%。n[Fe2+]n[H2O2]1/20。。n[Fe2+]n[H2O2]1/10Fe2+Fe3+Fenton[12]。n[Fe2+]n[H2O2]1/5Fenton。n[Fe2+]n[H2O2]1COD。2.4。FentonCOD4pH3、n[Fe2+]n[H2O2]120、H2O21mL·L-1、20℃。4FentonFe3+FentonCOD。2.5pH3、n[Fe2+]n[H2O2]120、H2O21mL·L-1、5。5Fenton35℃COD20℃50℃。H2O2[13]。2.6COD30min60min。GRuppertH2O2TOC30minTOCH2O2。COD。COD5min15min30min。5min15minFe2+H2O2Fe2+Fe3+Fe3+Fenton1hFenton。2.7pHFentonpHCOD。pH92hCODpH3H2O2CODFig.3IEffectofmolratioofn[Fe2+]:n[H2O2]ontheFentondegradationofCODgeneratedbytannin010203040506070010203040506070
%min4CODFig.4EffectofaerationontheFentondegradationofCODgeneratedbytannin0102030405060705055606570
%min5CODFig.5EffectoftemperatureontheFentondegradationofCODgeneratedbytannin0102030405060704550556065707580
%min3712703、n[Fe2+]n[H2O2]120、H2O21mL·L-1、、20℃6。6pHpHCOD10%。pH35%。3Fenton。FentonpHCOD。Fenton150mg·L-1CODpH3H2O21mL·L-1n[Fe2+]n[H2O2]1/2035℃60min。pH2hCOD5%。[1],.[M].:,2003:7-14.[2]LofranoG,MericS,BelgiornoV,etal.Fenton'soxidationofvarious-basedtanningmaterials[J].Desalination,2007,211:10-21.[3]DeNicolaE,MericS,GalloM,etal.Vegetableandsynthetictanninsinducehormesis/toxicityinseaurchinearlydevelopmentandinalgalgrowth[J].EnvironPollut.,2007,146:46-54.[4]MalikP,SahaS.Oxidationofdirectdyeswithhydrogenperoxideusingferrousionascatalyst[J].SeparationandPurificationTechnology,2003,31:241-250.[5]PanizzaM,CerisolaG.Electro-Fentondegradationofsyntheticdyes[J].WaterRes.,2009,43:339-344.[6]MaezonoT,SekineM,etal.Hydroxylradicalconcentrationprofileinphoto-Fentonoxidationprocess:generationandconsumptionofhydroxylradicalsduringthediscolorationofazo-dyeorangeII[J].Chemosphere,2011,82(10):1422-30.[7]ZeppRG,FaustBC,HoigneJ.Hydroxylradicalformationinaqueousreactions(pH3～8)ofiron(II)withhydrogenperoxide:thephoto-Fentonreaction[J].EnvironSciTechnol.,1992,26(2):313-319.[8]KwonB,LeeD,KangN,etal.Characteristicsofp-chlorophenoloxidationbyFenton'sreagent[J].WaterRes.,1999,33:2110-2118.[9]DuttaK,SekharB,BasabC,etal.Oxidativedegradationofmalachitegreenbyfentongeneratedhydroxylradicalsinaqueousacidicmedia[J].JournalofEnvironmentalScienceandHealth:PartA,2003,38(7):1311-1326.[10]RivasFJ,BeltranFJ,FradesJ,etal.Oxidationofp-hydroxybenzoicacidbyFenton'sreagent[J].WatRes.,2001,35(2):387-396.[11]Wongniramaikul,WorawitLiao,etal.DiisobutylphthalatedegradationbyFentontreatment[J].JournalofEnvironmentalScienceandHealth:PartA,2007,42(5):567-572.[12]HayashiH,NakajimaY,OhtaK.Noveldegradationmethodoforganiccompoundsinhumansurroundingsusingironoxide[J].RepTechnolRes.,2007,21:79-83.[13]Zazo,PliegoJA,Gema,etal.IntensificationoftheFentonprocessbyincreasingthetemperature[J].IndustrialandEngineeringChemistryResearch,2011,50(2):866-870.[14]RBauer.Mineralizationofcyclicorganicwatercontaminantsbythephoto-Fentonreaction:influenceofstructureandsubstituents[J].Chemosphere,1993,27:1339-1347.OXIDATIONOFTANNINSINTANNERYWASTEWATERBYFENTON'SREAGENTLiYuhong1,LiWeiguang1,2,WangYong1,SuChengyuan1（1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Haerbin150090,China;2.NationalEngineeringResearchCenterofUrbanWaterResources,Haerbin150090,China）Abstract:Tanninswhichareantioxidantandbiotoxicity,aretypicalrefractoryorganicintannerywastewater.ThemechanismsofaffectingfactorsindegradingtaninsbyFenton'sreagentwerepreliminarilyinvestigated.Itcanprovidepracticalandimportantbasistoadvancedtreatmentofeffluentofbiochemicaltreatedtannerywastewater.Theoptimaloperatingconditionsdeterminedby