Fenton氧化对制浆造纸废水分子量及可生化性变化的影响

86Vol．8No．620146ChineseJournalofEnvironmentalEngineeringJun．2014Fenton121111．1000892．100083Fenton1000083%Fe2+H2O21∶5pH3．5H2O230%3．25mL/LFentonH2O230%6．50mL/LCOD79．5%AOX75．3%97．5%500～300082．98%BOD5/COD0．56。Fen-ton。FentonX703A1673-9108201406-2429-06EffectofFentonoxidationonbiodegradabilityandmolecularweightchangesofwastewaterSongYun12WangHaijian1LiPeizhong1HaoＲunqin11．EnvironmentProtectＲesearchInstitutionofLightIndustryBeijing100089China2．SchoolofCivilandEnvironmentalEngineeringUniversityofScienceandTechnologyBeijingBeijing100083ChinaAbstractTheoxidationviabilityofprimaryclarifiereffluentofpulpandpapermakingwastewaterwithdif-ferentdosageofFentonreagentwasstudiedinthiswork．Theorganicpollutantswithmolecularweightgreaterthan10000wereaccountedfor83%intheprimaryclarifiereffluentandtheirbiodegradabilitywasworse．UndertheconditionsofpHof3．5theFe2+∶H2O2moleratioof1∶5theH2O230%doseoflowerthan3．25mL/LtheFentonreagentshowedhigheroxidationefficiency．WhenthedoseofH2O230%increasedto6．50mL/Lover79．5%ofCODabatement75．3%ofAOXabsorbableorganichalogenreduction97．5%ofchromade-creaseachievedandthepollutantsoflowmolecularweightattherangeof500～3000wereaccountedfor82．98%ofthetotalintheeffluentwhiletheratioofBOD5/CODincreasedto0．56．Asapre-oxidationprocessforthetreatmentofpulpandpapermakingwastewaterFentonoxidationcandecreasethemolecularweightoforgan-icmattersinpulpandpaperwastewaterandthetoxicityofwastewaterandthenconsequentlyresultstheincre-mentsofthewastewaterbiodegradabilityandstableoperationofsubsequentbio-process．KeywordspulpingandpapermakingwastewaterFentonoxidationbiodegradabilitychangeofmolecularweight2009EG1110212010090152013－05－272013－07－281966～、、、。[e-mail]、、。。。150．84%825．12%13．53%。2898。COD200mg/L3。Fenton、、、。FentonCOD。Fenton45。80%Fenton。Fenton6-8。11．1。。、、、、。C/D0—E0—D1—D2。、、。。90%。、9-12。40000m3/d27085m3/d。1。1Fig．1Processesofwastewatertreatment。/pHpH7．8COD920mg/LBOD5266mg/LBOD5/COD0．29。1．21．5L。1LWCJ-8021mol/LH2SO4pH3．5H2O230%Fe2+H2O21∶5FeSO4·7H2O50min1mol/LNaOHpH9。1．31．3．1ThermoOrion3starpHpH5BOD5、COD13。Ele-mentLiquiTOCIITOC。1．3．2AOXAOX。TOX-2100H。1．3．30．1mol/L0．22μm40℃40℃658nm1．0mL0．5mL/min。03426FentonGPC-GPC-MALLS-。0．45μm、。22．1COD/Fe2+H2O21∶5pH3．51L0．65、1．95、3．25、4．556．50mLH2O2Fenton2。2H2O2COD/TOC/nFe2+∶nH2O2=1∶5pH=3．5Fig．2InfluenceofH2O2dosageonCOD/TOC/colorremovalefficiencynFe2+∶nH2O2=1∶5pH=3．5、TOCCODFenton。H2O20．6mL/LCOD42．39%1．95mL/LCOD68．7%H2O26．50mL/LCOD79．5%。H2O21．95mL/LFentonFentonH2O2FentonCODFentonCODFenton。FentonH2O23．25mL/LFentonFentonCOD。Fenton·OH·OH121415FentonFenton16-18。Fe2++·OH→Fe3++OH－1H2O2+·OH→HO2·+H2O2、。H2O21．95mL/L91．8%6．50mL/L97．5%。Fenton。Fenton。。2．2AOXFentonAOX3。3H2O2AOXnFe2+∶nH2O2=1∶5pH=3．5Fig．3InfluenceofH2O2dosageonAOXremovalefficiencynFe2+∶nH2O2=1∶5pH=3．5FentonAOX。AOXFenton。H2O20．65mL/LAOX48．6%1．95mL/LAOX61．5%6．5mL/LAOX75．3%。AOX。Fenton·OHAOX13428AOX。2．3Fenton。BOD5/COD19。BOD5/COD0．3BOD5/COD0．2BOD5/COD0．3BOD5/COD0．45。Fenton4。4H2O2nFe2+∶nH2O2=1∶5pH=3．5Fig．4InfluenceofH2O2dosageonbiodegradabilityofwastewaternFe2+∶nH2O2=1∶5pH=3．54CODBOD5Fenton。H2O21．95mL/LCODBOD5BOD5/CODFentonH2O21．95mL/LBOD5/COD0．49H2O21．95～4．55mL/LCODBOD5BOD5/CODH2O26．5mL/LBOD5/COD0．56。H2O24．55mL/LBOD595．3mg/LH2O26．50mL/LBOD5105．3mg/L。FentonFenton。2．4。10002021。———。、MnMwMw/Mn2223。MnMnMnMwMwMw/Mn。Fenton100mL1。1H2O2nFe2+∶nH2O2=1∶5pH=3．5Table1EffectofH2O2dosageonmolecularweightdistributionofwastewaternFe2+∶nH2O2=1∶5pH=3．5H2O230%mL/LMw×104Mn×104Mw/Mn03．5631．4532．4523．251．4390．22636．3616．501．0260．13107．837MnMwMw/Mn。1FentonH2O26．50mL/L2/71/11Mw/Mn2．4527．837。510000～3000052．44%3000030．6%3000～1000015．79%Fenton。H2O23．25mL/LFenton1000023426Fenton5Fig．5Molecularweightdistributionofpollutantsinwastewater100000300003．87%30003000～1000021．11%300067．36%1000～200048．02%BOD5/COD0．47。H2O26．50mL/LFenton50000500～3000300082．98%3000。1000BOD5/COD0．56。FentonFentonFenton。3110000～3000052．44%3000030．66%3000～1000015．79%2H2O23．25mL/LFentonH2O26．50mL/LCOD188．6mg/kgCOD79．5%AOX75．3%。Fenton。3FentonH2O26．50mL/LBOD5105．3mg/LBOD5/COD0．56。4H2O23．25mL/LFenton10000～300005．95%300067．36%H2O26．25mL/LFenton300082．98%。5。Fenton。1．GC-MS．200521153-5533428SunJ．H．FengJ．L．SunＲ．X．AnalysisoforganicpollutantsinalkalistrawpulppapermakingwastewaterbyGC-MS．EnvironmentalMonitoringinChina200521153-55inChinese2．．2008316127-131ChenY．J．MaY．W．ZhangC．H．Degradationofor-ganicinwastewaterfromregeneratedpapermaking．Envi-ronmentalScience＆Technology2008316127-131inChinese3．．20104．Fenton-．20071457-60XuY．ChenL．ZhouJ．X．Treatmentofdyeintermedi-atewastewaterbyFentonoxidationandbiochemicalprocesses．ChineseJournalofEnvironmentalEngineering20071457-60inChinese5WangX．J．SongY．MaiJ．S．CombinedFentonoxida-tionandaerobicbiologicalprocessesfortreatingasurfac-tantwastewatercontainingabundantsulfate．JournalofHazardousMaterials20081602-3344-3486LiJ．LuanZ．K．YuL．etal．PretreatmentofacrylicfibermanufacturingwastewaterbytheFentonprocess．Desalination2012284462-657LodhaB．ChaudhariS．OptimizationofFenton-biologicaltreatmentschemeforthetreatmentofaqueousdyesolutions．JournalofHazardousMaterial20071481-2459-4668VítorJ．P．V