Fenton氧化混凝联合处理橡胶废水研究

、、。COD40%。、。Fenton、、、、[1]。Fenton。、、、。Fenton-FentonFenton-。11.1、、、、、30%H2O2KMnO4。1.22003MettlerToledo320pHMeterXH9004BCODXH9004BAgilent1100LC721BS124S。1.3、COD600～800mg·L-1BOD5100～360mg·L-1BOD5/COD0.25pH3～6(55±5)℃[2-3]。22.1100mLH2O2FeSO4·7H2OFe2(SO4)3NaOHpH30s11minCOD。FentonH2O2、FeSO4·7H2OFe2(SO4)3H2O2。H2O2、FeSO4·7H2OFe2(SO4)333L9(33)[14-5]。Fenton－730070FentonH2O2、FeSO4·7H2OFe2(SO4)3L9(33)Fenton-30%H2O2、FeSO4·7H2OFe2(SO4)32mL、0.3g0.3g。FentonFenton-COD2COD。FentonCODX783.3A1000-3770(2009)[e-mail]35820098TECHNOLOGYOFWATERTREATMENTVol.35No.8Aug.,200999、12。2H2O2CODFeSO4·7H2OFe2(SO4)3。H2O2、FeSO4·7H2OFe2(SO4)32mL、0.3g0.3g。2.2Fe2(SO4)30.3gpH6.5。。COD15.64%。2.3FentonpH、FeSO4·7H2OH2O2Fenton。FentonpH3FeSO4·7H2O0.3g30min。FentonpH6.50.3g。FentonH2O2COD1。1Fenton-CODCOD。Fenton-CODH2O2H2O22mLCOD93%COD15.64%。H2O22mLH2O2COD。FentonCOD。Fenton。FentonH2O2Fe2+·OHH2O2·OH·OHH2O2·OH·OH·OHCO2H2O[4]。2.4pHFentonH2O2、FeSO4·7H2OFe2(SO4)32mL、0.3g0.3gpHFentonCOD2。012345060708090100COD
/%V(HO)/mL1CODFig.1EffectofH2O2dosageonCODremovalm(FeSO4·7H2O)/gV(H2O2)/mLm(Fe2(SO4)3)/gCOD/%0.10.20.30.10.20.30.10.20.30.51.02.01.02.00.52.00.51.00.10.10.10.20.20.20.30.30.362.3375.6184.9173.8488.0772.0382.3470.6988.561Table1OrthogonalfactorsandlevelsoftestKRFeSO4·7H2OH2O2Fe2(SO4)3K1K2K3K軍1K軍2K軍3R218.51234.37245.5072.8478.1281.838.99205.05238.01255.3268.3579.3485.1116.76222.85233.94241.5974.2877.9880.536.252Table2Orthogonalanalysisoftest4567895060708090100
pHCOD/%2pHCODFig.2EffectofpHonCODremoval3581002pH6～7pH6.5。2.5FentonH2O2FeSO4·7H2O2mL0.3g30minFe2(SO4)3pH6.53。3FentonpH6.5、0.3gCOD。[6]。2.6FentonH2O2FeSO4·7H2O2mL0.3gpH6.5COD4。4FentonCODCODCODCOD。FentonFenton21FentonCOD1Fenton、CODCODCOD[7]。COD2、。2.7Fenton-、FentonFenton-3。FentonFeSO4·7H2O0.3gpH330minpH6.5、0.3g。3FentonFenton-COD2COD。FentonCOD。H2O22mLFentonCOD68.23%Fenton-COD93.57%Fenton。FentonH2O2H2O2。3H2O24mLFentonCOD65.46%Fenton-2mLH2O2COD93.57%Fenton-H2O24CODFig.4EffectofreactingtimeonCODremoval051015202530-100-75-50-250255075100COD
/%/min0.00.10.20.30.40.50.60.75060708090100COD
/%m(Fe(SO))/g3CODFig.3EffectofcoagulantdosageonCODremovalV(H2O2)/mLCOD/%FentonFenton-Fenton+0.51.01.52.02.53.04.045.3261.3064.8768.2370.4869.3965.4670.2187.8690.7393.5790.8383.6978.3360.9676.9480.5183.8786.1285.0381.103Table3EffectoftreatingtechniquesontreatingresultsCOD15.64%。Fenton－101Fenton。3-1m3COD93.57%30%、1.11mg·L-1H2O23.6LH2O21500·t-1H2O25.39pH。7.4·m-3。FentonFe2+、Fe(OH)3Fe(OH)3CODFe(OH)3COD。。4FentonH2O2CODFeSO4·7H2OFe2(SO4)3。H2O2、FeSO4·7H2OFe2(SO4)32mL、0.3g0.3g。FentonCOD。pH、FentonpH6.5、0.3g。FentonCODCODCOD。FentonFenton-COD2COD。[1].[J].,1998,19(2):47-50.[2],,,.Fenton[J].,2000,21(3):93-96.[3],,.-[J].,1997,23(2):32-35.[4],,,.FentonCOD[J].,2008.34(12):68-70.[5],,,.Fenton[J].,2001,22(5):60-64.[6],,,.Fenton[J].,2002,33(1):28-29.[7]KangSF,Chih-Hsaing.Pre-oxidationandcoagulationoftextilewastewaterbytheFentonprocess[J].Chemosphere,2002,46(6):923-928.STUDYONRUBBERWASTEWATERTREATMENTBYFENTONOXIDATIONUNITEDWITHCOAGULATIONYanXiaoru,GaoJianping,WangJianzhong,YangJiantao,LiHui(CollegeofGeographyandEnvironmentalScience,NorthwestNormalUniversity,Lanzhou730070,China)Abstract:Withrubberwastewaterastheobjectofstudy,H2O2dosage,coagulationsolutionpHvalue,coagulationdosageandreactiontimewhichhadnotableeffectonthecoagulationprocesswithFentonpreoxidationwaterwereinvestigated.AccordingtoL9(33)orthogonalexperimentswithH2O2(30%)dosage,FeSO4·7H2OdosageandFe2(SO4)3dosage,theoptimaldosagewere2mL,0.3gand0.3grespectively.TheunitedprocesshadbetterCODtreat-mentresultthanthatofFentonoxidationordirectcoagulation.Keywords:Fentonoxidation;coagulation;rubberwater;CODremoval!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!358102