C微电解Fenton组合工艺处理丁腈橡胶废水

2012－03－1535289～93CHINASYNTHETICRUBBERINDUSTRYFe/C－Fenton121111.7300602.730060Fe/C－FentonFenton。Fe/C3/1、pH2.00～10.00、1hFentonH2O22.0mL/L、Fe2+0.2g/L、40℃45min50．00%95%。FentonH2O23.0mL/L2.0mL/LFe2+0.6g/L0.2g/L。FentonTQ330．9B1000－1255201202－0089－05NBRAN—CN、1。NBRAN、、、。Fe/C、、、2。Fenton3Fe2+。Fe/CFentonNBRFentonNBR。＊11.11mm×4mm40H2O227.5%FeSO4·7H2O。1.2NBRNBRpH6.5～8.5CODcr200～1000mg/LBOD5100～250mg/LB/CBOD5CODcr0.10～0.28AN20～100mg/L。1.3Fe/C1L1LNBR。*2011－05－302011－12－21。1979—。4。2008D－4707。Fenton500mLNBRNBR1LpHFeSO4·7H2OCT－4pH8.00～9.00。1.4CODcrGB11914—1989BOD5HJ505—2009pHGB/T6920—1986ANHJ/T73—2001。22.1NBR2.1.1Fe/CFe/CFeC、HFe。CC。CFe、CC。1NBRpH2.87、1h2hFe/CNBRCODcrFe/C1/1～3/1。FeCFe/C3/1。Fig1EffectofFe/CmassratioonremovalrateofCODcrtreatedfordifferenttime2.1.2pHpHFe2+H4。21hFe/C1/1、2/13/1pH2.00～10.00NBRCODcr。Fe2+HCODcrFe2+Fe3+CODcr。Fe/Cmassratio■—1/1●—2/1▲—3/1Fig2EffectofpHvalueonremovalrateofCODcr2.1.33NBRpH6.83、Fe/C2/1、3/1CODcr1hCODcr。Fe/CNBR1h。Fe/Cmassratio1—2/12—3/1Fig3EffectofreactiontimeonremovalrateofCODcr2.1.4B/CH、·09·355。B/C。4NBRFe/C3/11hB/C20%～30%。Fig4B/CvalueofinfluentandeffluentofNBRwastewater2.2FentonNBR2.2.1FentonH2O2CODcr。5NBRpH2.99、Fe2+1．0g/L、40℃、1hNBR3.0～7.0mL/LCODcr。Fenton·OHH2O2H2O2·OHCODcrH2O2Fig5EffectofoxidantconcentrationinNBRwastewateronremovalrateofCODcrFe2+Fe3+Fe3+·OHH2O2H2O2H2O2O26。2.2.2FentonFe2+H2O2·OH。。6NBRpH3.02、5.0mL/L、40℃1hNBRCODcr0.6g/LCODcr。CODcrFe2+Fe3+。Fig6EffectofcatalystconcentrationinNBRwastewateronremovalrateofCODcr2.2.3pHpHFentonFentonpH·OH。75.0mL/L、0.6g/L、40℃1hFig7EffectofpHvalueofinfluentonremovalrateofCODcr·19·2.Fe/C－FentonFentonNBRpH2.50～6.00Fenton。2.2.48NBRpH3.01、5.0mL/L、0.6g/L40℃45minNBRCODcr45minCODcr。FentonNBRCODcr45min。7。Fig8EffectofreactiontimeonremovalrateofCODcr2.3Fe/C－FentonNBR2.3.1Fe/CNBRFe2+Fenton。Fe/C－FentonNBRFe/C3/1NBRpH6.981hFentonpH3.055．0mL/L40℃45min。1Table1OptimizationofcatalystconcentrationinNBRwaste-waterforFe/Cmicroelectrolysis-FentoncombinedprocessItemCODcr/mg·L－1RemovalrateofCODcr/%NBRwastewater593.70Effluentofmicroelectrolysis466.0021.49Catalystconcentration/g·L－10368.8037.880.2281.3052.650.4262.9155.720.6254.6657.10NBRCODcr50．00%Fenton0.6g/L0.2g/L。2.3.2NBRCODcr20．00%、B/CFenton。2Fe/C－FentonNBR。Fe/C3/1NBRpH6.541hFentonpH3.030.2g/L40℃45min。Table2OptimizationofoxidantconcentrationinNBRwaste-waterforFe/Cmicroelectrolysis-FentoncombinedprocessItemCODcr/mg·L－1RemovalrateofCODcr/%NBRwastewater706.58Effluentofmicroelectrolysis564.6020.09Oxidantconcentration/mL·L－11.0335.6252.502.0291.8758.713.0285.0059.664.0277.9360.622H2O22.0mL/LNBRCODcr。FentonFenton3.0mL/LFenton。2.3.3Fe/C3/1、NBRpH6.83、1hFentonpH2.98、2.0mL/L、0.2g/L、40℃45minFe/C－FentonNBR。9Fe/C－FentonNBRFe/CCODcr20%AN20%～30%Fenton·29·35CODcr50．00%AN95%。△—removalratebymicroelectrolysis○—totalremovalratebycombinedprocessFig9RemovalrateofCODcrandAN3Fe/C－FentonNBRFe/C3/1pH2.00～10.001hFentonH2O22.0mL/LFe2+0.2g/L40℃45min。NBRCODcr50．00%AN95%。FentonH2O23.0mL/L2.0mL/LFe2+0.6g/L0.2g/L。1.J.201127－12.2.J.201041146－49.3.－Fenton－J.2010362109－111.4.－FentonJ.200935174－78.5NeyensEBaeyensJ.AreviewofclassicFenton’speroxida-tionasanadvancedoxidationtechniqueJ.JournalofHaz-ardousMaterials2003981/2/333－50.6.－Fenton－SBRJ.200929362－64.7.－FentonC∥..2009380－384.TreatmentofnitrilerubberwastewaterbyFe/Cmicroelectrolysis-FentoncombinedprocessHELin1YANGXin-chun2ZHANGYuan1WANGXiao-xiong1ZHAOYing11.LanzhouPetrochemicalResearchCenterPetroChinaLanzhou730060China2.ChemicalFertilizerFactoryLanzhouPetrochemicalCompanyPetroChinaLanzhou730060ChinaAbstractThenitrilerubberwastewaterfromsomepetro-chemicalenterprisewastreatedbymicroelectrolysis-Fentoncombinedprocess.Themaininfluencingfactorsofmicro-electrolysisandFentonprocesseswereinvestigatedrespec-tivelyandonthisbasistheprocessingconditionswereop-timizedandtreatmenteffectwasverifiedforthecombinedprocess.Theresultsshowedthatwhenthecombinedprocesswasusedtotreatthewastewaterthetotalremovalratesofchemicaloxygendemandandacrylonitrileweremorethan50．00%and95%respectivelyundertheconditionofFe/Cmassratio3/1initialpHvalue2.00－10.00reactiontime1hformicroelectrolysistheconcentrationsinNBRwastewaterofoxidantH2O2andcatalystFe2+2.0mL/L0.2g/Lrespectivelyreactiontemperature40℃andreac-tiontime45minforFentonprocess.ComparedtosingleFentonprocesswithsametreatmentresultsthecombinedprocesscoulddecreaseH2O2from3.0mL/Lto2.0mL/LandFe2+from0.6g/Lto0.2g/L.KeywordsmicroelectrolysisFentonmethodnitrilerub-berwastewatertreatmentchemicaloxygendemandacrylo-nitrileremovalrate·39·2.Fe/C－Fenton