Fenton氧化混凝活性炭吸附联合工艺处理酚醛树脂废水

325()Vol.32No.5200610JournalofHunanAgriculturalUniversity(NaturalSciences)Oct20061007-1032(2006)05-0544-04(410128)FentonpHH2O2[Fe2+]/[H2O2]pHpH440H2O2800mg/L[Fe2+]/[H2O2]=0.160minpH8500mg/L30g60minCOD97.85%99.75%99.81%FentonX703.1AStudyonFentonOxidation-Coagulation-AbsorbentTreatmentofWastewaterContainingPhenolandFormaldehydeQINPu-fengZHOUXi-shiTIEBo-qingQIANZhanBAOXiao-feng(CollegeofResourcesandEnvironmentHNAUChangsha410128China)AbstractTreatmentofwastewatercontainingphenolandformaldehydehasbeencarriedoutbyFentonoxidation-coagulation-absorbentprocessTheeffectsofinitialpHonwastewaterH2O2doses[Fe2+]/[H2O2]reactiontimetemperaturepHandmassconcentrationforcoagulationabsorbentdoseandtimewereinvestigatedTheoptimisticconditionsaredetermined97.85%ofCOD99.75%ofphenoland99.81%offormaldehyderemovalwereachievedatpH4[H2O2]=800mg/L[Fe2+]/[H2O2]=0.1T=40t=60minpHandmassconcentrationforcoagulationwere8and500mg/Labsorbentdoseandtimewere30gand60minprovidingthegoodpremiseforthefollowingbiologicaltreatmenttoremoveKeywordswastewatercontainingphenolandformaldehydefentoncoagulationabsorbent[1][24]FentonH2O2Fe2+[5]•OH[67]FentonFentonpH1.0~2.0COD126000~128000mg/L36000~37000mg/L11000~12000mg/L2006-06-20(ToyotaFundD01-B3-010)(04SK3019)(1971-)325Fenton545Fenton250mL200mLFeSO4·7H2OFeSO4·7H2O30%H2O2pH123456Fenton200mLpH30s(150r/min)10.5%1min(50r/min)510minCODCODpH(123456)[Fe2+]/[H2O2](00.050.10.20.30.40.50.6)H2O2(4006008001000mg/L)(1020306090100min)(20406080)FentonCODFentonCOD200mL410203040gCODCOD[8]pHpHS-25pHpHCOD30%H2O2500mg/L[H2O2]/[Fe2+]=21T=30t=1.5hFentonpHCOD500mg/LpH830minCODpH14CODpH4CODFenton[1]Fe2+Fe2+Fe3+Fe3+Fe2+pHFe2+CODH2O2CODpH4H2O211H2O2800mg/L1000mg/LCOD85.28%86.98%H2O2800mg/L2535455565758595010203060901234H2O2CODFig.1EffectofH2O2dosesonCODremovalT=30t=1.5hpH4H2O2800mg/L[Fe2+]/[H2O2]COD22[Fe2+]/[H2O2]00.1COD[Fe2+]/[H2O2]=0.1COD[Fe2+]/[H2O2]COD[Fe2+][Fe2+][Fe2+]·OHH2O2[Fe2+][Fe3+]CODFe2+[2]CODT=30pH4H2O2800mg/L[Fe2+]/[H2O2]=0.1COD30minCOD86.28%COD/%/min400mg/L600mg/L800mg/L1000mg/L546()20061010min1.5hCOD86.28%95.28%60minCODFig.2Effectof[Fe2+]/[H2O2]onCODremovalCOD3pH4H2O2800mg/L[Fe2+]/[H2O2]=0.160minCODCOD20404040CODFig.3EffectofreactiontemperaturtonCODremovalT=40pH4H2O2800mg/L[Fe2+]/[H2O2]=0.1t=60min7200mLpH511500mg/L44pH8CODCODFig.4EffectofpHanddoseonCODremovalFentonpH8Fe3+4FentonpH8500mg/LCODFe3+Fenton200mL10203040gCOD20510g40gCOD120min30g40g68.58%72.56%560min60minCOD30g60min02040608002040609012040g30g20g10gCODFig.5EffectofabsorbentdoseandtimeonCODremovalCOD/%/min6070809010067891011200300400500600700Fe2+pHCOD/%pHFe2+/(mg·L1)020406080100120010203040506020406080COD/%/min506070809010000.050.10.20.40.50.60.8COD/(mg·L1)[Fe2+]/[H2O2]40g30g20g10g20406080Fe2+325Fenton547Fenton200mL60minCOD66110minCOD46.37%244.32%COD6[9-11]CODFig.6EffectofRepetitiveAbsorbentdegradationofwastewateronCODremovalT=40pH4H2O2800mg/L[Fe2+]/[H2O2]=0.1t=60minpH8500mg/L30g60minFenton91.25mg/L21.85mg/L99.75%99.81%Fenton1m3COD97.85%30%1.11g/mLH2O23.4LH2O215005.394000/tpH1t11.4[1]NeyensEBaeyensJAreviewofclassicFenton’speroxidationasanadvancedoxidationtechnique[J]JournalofHazardousMaterials200329(5)33-50[2]ABS[J]199726(2)64-67[3]ShengHLChoCLFentonprocessfortreatmentofdesizingwastewater[J]WaterRes199731(8)2050-2056[4][J]199818(2)4-7[5][J]199925(2)6-7[6][J]()200531(2)210-212[7][M]1993199-209[8][M]1996389-391[9][J]200412(21)7-14[10][J]2004(1)33-34[11][J]200020(2)24-28COD/%/min01020304050607013065105130180195241270305345