Fenton化学氧化法深度处理精细化工废水

5Fenton510006-Fenton。H2O2Fe2+、、pHCOD。H2O218mmol/LFeSO4·7H2O12mmol/L1.5hpH=4COD82.61%100mg/L。FentonX78A1003-6504(2009)05-0141-03AdvancedTreatmentofFine-chemicalsWastewaterbyFentonReagentLIUJian-yuWANGXiao-junSchoolofEnvironmentalScienceandEngineeringSouthChinaUniversityofTechnologyGuangzhou510006ChinaAbstractAdvancedoxidationprocessofFentonreagentwasusedtotreatfine-chemicalswastewaterwhichishardtodisposebybiologicalmethodafterlongperiodanaerobic-aerobicprocess.TheeffectsonCODremovalbydifferentdosagesofH2O2andFe2+oxidationtimeandpHvaluewerestudied.UndertheoptimaloperatingconditionsasH2O2dosage18mmol/LFeSO4·7H2Odosage12mmol/Loxidationtime1.5handpH4removalefficiencyofeffluentCODwasupto82.61%withCODinrawwastewaterlessthan100mg/LwhichcanmeettheClassIofwastewaterdischargecriteria.Keywordsfine-chemicalswastewaterFentonreagentadvancedtreatmentnon-biodegradation、。-Fenton。Fenton、、、[1]。Fenton、、、[2-5]。Fenton·OHCO2、H2O[6]。Fenton。。11.130%、、、COD230mg/LpH7.6。1.2100mL250mLH2SO4NaOHpHpHEcoscan-pH6pH8CODCODGB1194-89。[e-mail]*[e-mail]。EnvironmentalScience&Technology32520095Vol.32No.5May200932FentonFentonH2O2、Fe2+、pH、[7]。H2O2Fe2+pH。。2.1H2O2CODH2SO4pH4100mLFeSO4·7H2O10mmol/LH2O23612182430mmol/L。1.5hpH8COD。H2O2COD1。1H2O2COD。H2O2CODH2O2·OHH2O2·OH·OH。H2O2Fe2+Fe3+H2O2·OHH2O2O2H2O2CODH2O2COD。H2O218mmol/LCOD82.17%。H2O2H2O2[4]。H2O2[H2O2]/[Fe2+]H2O2·OHH2O2。2.2FeSO4·7H2OCODFeSO4·7H2O·OH。H2O21.70VFe2+·OH2.80VFe2+Fenton。H2SO4pH4100mLH2O218mmol/LFeSO43mmol/L、4.5mmol/L、6mmol/L、9mmol/L、12mmol/L、18mmol/L。1.5hpH8CODFeSO4·7H2OCOD2。Fe2+·OHFe2+·OHFe2+H2O2·OHFentonFe2+Fe3+。FeSO4·7H2O2FeSO4·7H2O3mmol/L12mmol/LCOD34.78%82.61%FeSO4·7H2OCODFeSO4·7H2O12mmol/L。2.3CODH2SO4pH4100mLFeSO4·7H2O12mmol/LH2O218mmol/L0.5h、1h、1.5h、2h、2.5h、3hpH8CODCOD3。1.5COD14251.5h3hCOD·OH。Fenton·OH·OHFenton。Fenton、、pH。COD。2.4pHCOD100mLH2SO4pH2、3、4、5、6、7FeSO412mmol/LH2O218mmol/L。1.5hpH8CODpHCOD4。pH2~4。FentonFe2+H2O2·OH。pH·OHFe2+pH4H+Fe3+Fe2+Fe2+·OH。pHFe3+Fe2+。CODpH65%。pH24CODpHCOD。pH4COD82.61%COD230mg/L40mg/L。31Fenton。2H2O218mmol/LFeSO4·7H2O12mmol/L1.5hpH=4COD82.61%COD230mg/L100mg/L。[][1]ChamarroEmarcoA.UsingofFentonreagenttoimproveorganicchemicalbiodegradability[J].WaterResearch2001351047-1051.[2].Fenton[J].199712623-24.XuXiang-rongWangWen-huaLiHua-binetal.StudyonacidwastewatertreatmentwithFentonreagent[J].EnvironmentalHerald199712623-24.inChinese[3].Fenton[J].2007202111-113.JuYanChenJia-chuanXueRong.EffectfactorsofFentonoxidationprocessanditsapplicationinwastewatertreatment[J].JiangsuEnvironmantalScienceandTechnology2007202111-113.inChinese[4].Fenton[J].20012510511-14.WangLuo-chunWenRen-qinDingHeng-ru.Treatmentofnon-degradableorganicwastewaterwithFentonreagentanditsapplication[J].EnvironmentalProtectionScience20012510511-14.inChinese[5].Fenton[J].2005223:31-34.LiDeXieQi-biao.ApplicationontreatingpapermakingwastewaterbyFentonreagent[J].JournalofFuyangTeachersCollegeNaturalScience200522331-34.inChinese[6].Fenton[J].200021593-96.ChenChuan-haoXieBoRenYuanetal.ThemechanismsofaffectingfactorsintreatingwastewaterbyFentonreagent[J].EnvironmentalScience200021593-96.inChinese[7].Fenton[J].200725411-13.LiuXiao-jingWenYi-boStudyonpapermakingwastewateradvancedtreatmentbyFentonreagent[J].ChinaResourceComprehensiveUtilization200725411-13.inChineseFenton143