Fenton絮凝法预处理化工综合废水的研究罗九鹏

Fenton-CODCr、，，，，，，。，，。Fenton，pHFeSO4Fe2＋H2O2，Fe2＋H2O2，：（2008ZX07314－001－09）；（863）（2008AA06Z301）：2011-08-01；：2011-08-31!!!!!!!!!!!!!!!!!!!!!!!!1，4，2，3，4，1（1.，300384；2.，300074；3.，100029；4.，100085）：，Fenton－。Fenton、pH、H2O2、Fe2＋、pH。Fenton60min，pH3．5，H2O2FeSO4·7H2O6．5mmol／L600mg／L，pH6．5，PAM0．9mg／L，CODCr、78．86％、96．64％98．65％，m（BOD5）／m（CODCr）0．180．5，。：Fenton；；；；：X703.1：A：%1009－2455（2011）05－0015－05PretreatmentofchemicalintegratedwastewaterbyFenton-flocculationprocessLUOJiu-peng1，4，HANFei2，JIANGQi3，TIANBing-hui4，SUNLi-ping1（1.DepartmentofEnvironmentalandMunicipalEngineering,TianjinInstituteofUrbanConstruction,Tianjin300384,China;2.NorthChinaMunicipalEngineeringDesignandResearchInstitute,Tianjin300074,China;3.NationalMajorScienceandTechnologyProgramManagementOfficeforWaterPollutionControlandTreatment,Beijing100029,China;4.ResearchCenterforEco-EnvironmentalSciences,ChineseAcademyofScience,Beijing100085,China）Abstract：Takingchemicalintegratedwastewaterastheresearchobject,anexperimentofFenton-flocculationprocesstreatingintegratedwastewaterfromachemicalparkwascarriedout.TheinfluencesofFentonreactiontime,initialpHvalue,dosageofH2O2andFe2+,initialpHvalueoftheflocculation,flocculantdosageandsomeotherfactorsonthetreatmenteffectwereinvestigated.Itcouldbeseenthat,whentheFentonreactiontimewas60min,theinitialpHvaluewas3.5,thedosageofH2O2andFeSO4·7H2Owere6.5mmol／Land600mg／Lrespectively,theinitialpHvalueoftheflocculationwas6.5,thePAMdosagewas0.9mg／L,theremovalratesofCODCr,turbidityandchromaintherawwaterreached78.86%、96.64%and98.65%respectively,them(BOD5)／m(CODCr)increasedfrom0.18toabove0.5,thebiodegradabilityofthewastewaterwassignificantlyimproved.Keywords：Fenton;flocculation;chemicalintegratedwastewater;pretreatment;biodegradabilityINDUSTRIALWATER＆WASTEWATERVol．42No．5Oct.，2011·15·INDUSTRIALWATER＆WASTEWATERVol．42No．5Oct.，20111Tab.1QualityofrawwaterpH／NTU／ρ（CODCr）／（mg·L－1）ρ（BOD5）／（mg·L－1）6.89~7.6858.40～71.10753.76～1707.52594.02～866.43113.20～150.961FentonCODCrFig.1ImpactofFentonreactiontimeonCODCrremoval20406080100120／minρ（CODCr）／（mg·L－1）300270240210180150

CODCr／%757065605550，·OH，2．80V，F2（3．06V），CO2H2O，，［1－6］。，，。，，、，。Fenton2（），，，，。11．1，。、、、，80％。，。201011~12。，1。1．2（pH3．5、H2O26．5mmol／L、FeSO4·7H2O230mg／L、2．0mg／L）：1L，H2SO4NaOHpH，FeSO4·7H2OH2O2，NaOHpH，，FentonCODCr。1．3pH：PHS－3CpH；：HACH2100AN；：XZ－S；：HZQ－F160A；CODCr：HACH；BOD5：；Zeta：MalvernZitasizer2000Zeta。22．1Fenton2．1．1CODCrCODCr1。1，20～40min，CODCr，40～60min，，60min，CODCr，，60min，Fenton。P.K.Malik［7］，FentonFe2＋，，，Fe2＋，Fe3＋Fenton，。，Fenton，［8-9］：·OH＋·OH＝H2O2（1）·OH＋H2O2＝H2O＋HO2（2）·OH，，。Fenton60min。2．1．2pHCODCrpHCODCr2。2，pH2．02．5，CODCr·16·

2pHCODCrFig.2ImpactofinitialpHvalueonCODCrremoval23456pHρ（CODCr）／（mg·L－1）300250200150100CODCr／%80757065605550

3H2O2CODCrFig.3ImpactofH2O2dosageonCODCrremoval051015202530H2O2／（mmol·L-1）ρ（CODCr）／（mg·L－1）240220200180160140CODCr／%777471686562

4FeSO4·7H2OCODCrFig.4ImpactofFeSO4·7H2OdosageonCODCrremoval100200300400500600700800900FeSO4·7H2O／（mg·L-1）ρ（CODCr）／（mg·L－1）250230210190170150130CODCr／%8075706560，2．53．5，pH3．5CODCr，pH3．56．0，CODCr，5．06．0，pH6．0。，，CODCr，pH3．5，pHCODCr。，Fenton，Fe2＋pH，，Fe2＋H2O2·OH。pH·OH，Fe2＋；pH，H＋，Fe3＋＋HO2＝Fe2＋＋O2＋H＋，Fe3＋Fe2＋［10］，Fe2＋Fe3＋，Fenton。2．1．3H2O2CODCrH2O2CODCr3。3，H2O21．625mmol／L26mmol／L，H2O2，CODCr。H2O2Fenton，H2O2Fenton。H2O2，，·OH，，CODCr；H2O2，·OH，H2O2·OH［11－12］，，。13mmol／L，CODCr75．22％，6．5mmol／L，CODCr73．51％，97．70％，H2O26．5mmol／L。2．1．4FeSO4·7H2OCODCrFeSO4·7H2OCODCr4。4，120~900mg／L，FeSO4·7H2O，CODCr、、。Fe2＋·OH，Fe2＋，H2O2［10］。Fe2＋Fenton，Fe2＋，Fe2＋＋H2O2=Fe3＋＋OH－＋·OH·OH，·OH，［13］；FeSO4·7H2O，Fe2＋，·OH、，；Fe2＋，H2O2，·OHFe3＋，。600～720mg／L，CODCr，FeSO4·7H2O。2．2Fenton，pH，，，：Fenton-·17·INDUSTRIALWATER＆WASTEWATERVol．42No．5Oct.，20115pHZetaFig.5ZetapotentialunderdifferentpHconditions6.06.57.07.58.0pHZeta／mV-4-5-6-7-8-96pHFig.6ImpactofflocculationpHvalueonturbidityremoval

6.06.57.07.58.0pH／NTU1.21.00.80.60.40.20／%99.499.299.098.898.698.4

7pHCODCrFig.7ImpactofflocculationpHvalueonCODCrremoval6.06.57.07.58.0pHρ（CODCr）／（mg·L－1）320300280260240220200CODCr／%787572696663



8Fig.8Impactofflocculantdosageonturbidityremoval0.30.60.91.21.51.8PAM／（mg·L－1）／NTU3.53.02.52.01.5／%97.597.096.596.095.595.094.59CODCrFig.9ImpactofflocculantdosageonCODCrremoval0.30.60.91.21.51.8PAM／（mg·L－1）ρ（CODCr）／（mg·L－1）350300250200150CODCr／%8580757065606．0、6．5、7．0、7．58．0，pHZeta5。5，pH6．08．0，Zeta，，，（PAM）。2．3pHpH6、7。6，pH6．08．0，pH，，pH6．0，99．31％，pH8．098．42％，，，0．8NTU。7，pH，CODCr。［14］，ZetapH，pH，Zeta，，，pH，。，pH6．5。2．4PAMPAM8、9。8，PAM0．3～0．6mg／L，。，，。PAM0．6～1．2mg／L，，PAM，，，。·18·2、BOD5CODCrTab.2Chromavalue,massconcentrationofBOD5andCODCrofrawwaterandtreatedwater／ρ（BOD5）／（mg·L－1）ρ（CODCr）／（mg·L－1）m（BOD5）∶m（CODCr）1707.52147.60820.020.17923.1388.68173.350.512，，PAM1．8mg／L，97．33％，，、。96．49％。9，PAM，CODCr、、，PAM0．9mg／L。CODCr，0．9mg／L。2．5，、BOD5CODCr2。2，1707．5223．13，98．65％。BOD5147．6088.68mg／L，CODCr820.02173．35mg／L，m（BOD5）／m（CODCr）0．180．5，。3（1）Fenton：60min、pH3.5、H2O26．5mmol／LFeSO4·7H2O600mg／L。（2），PAM。pH6．5，PAM0．9mg／L，96．49％，。（3）Fenton－、CODCr，，96．64％、98．65％78．86％，m（BOD5）／m（CODCr）0．180．5，，，。：［1］WalterZT