高级氧化BAF深度处理焦化废水李豪

33-BAF*510006O3+BAFFenton+BAFO3、pH、/、、。800mg/LBAF18h0.5mL/L2g/LCOD70mg/L50。X703Adoi10.3969/j.issn.1003-6504.2010.11.0321003-6504(2010)11-0142-04AdvancedTreatmentofCokingWastewaterbyAOPs-BAFProcessLIHaoWANGXiao-jun*WANGKai-yanSchoolofEnvironmentalScienceandEngineeringSouthChinaUniversityofTechnologyGuangzhou510006ChinaAbstractOzonationandbiologicalaeratedfilterBAFprocessaswellasFentonandBAFprocesswereusedtoremoveresidualpollutantsincokingwastewatertreatedbybiologicaltreatmentsystem.AffectingfactorsincludingdosageofO3pHvaluemolarratioofFeandH2O2dosageofH2O2andaerationtimewerestudied.ResultsshowedthatwhendosageofO3was800mg/LaerationtimeofBAFwas18horwhendosageofH2O2was0.5mL/LdosageofFeSO4·7H2Owas2g/LeffluentCODwaslessthan70mg/Lcolorwaslessthan50timeswhichmettheGradeIofnationalemissionstandard.KeywordscokingwastewaterozoneoxidationFentonoxidationbiologicalaeratedfilter、COD、、。。[1]88。1300。[2]A/OCOD、、3。[3]。advancedoxidationprocessesAOPs[4]。、COD。FentonAOPsBAF[2]。A2/OO3-BAFFenton-BAF。11.1A2/O11CODGB13456-92。[e-mail]*[e-mail]。EnvironmentalScience&Technology3311201011Vol.33No.11Nov.20101Table1CharacteristicsofwastewaterCOD(mg/L)(mg/L)()pH200~2308~122567.9~8.17015506~9111.21。准96mm×1200mm1g/hKI。。BAF2BAF准96mm×1200mm准3~准5mm。ACO-308ACQ＝45L/min。Fenton24hBAF。Fenton200mLpH30%2hpH0.5‰PAM30min。。1.3、pH、COD《》。22.1O3+BAF2.1.15L3。COD800mg/L93.8%16COD52%COD110mg/L。COD。2.1.2pHpH510pHpHpH=8COD4。4pH=5CODpH=10。2.07V·OH·OH2.80V。pH、pHOH-·OH-BAF14333[5]。。2.1.3BAF800mg/LpHBAF6COD2。2BAFCOD。18H28.2%COD。BAF18HCOD70mg/L。2.2Fenton+BAF2.2.11mL/L/Fenton3。34g/L1mL/LCODCOD。/1.5。Fenton[6]Fe2++H2O2→Fe3++OH-+·OH1Fe3++H2O2→Fe2++HO2·+H+2Fe2+Fenton·OHFe2+·OH[7]H2O2Fenton/。2.2.2Fenton/1.5Fenton5。5COD。0.5mL/LCOD51%800mg/L。1mL/LCOD60%COD。·OH。·OH·OH[8]Fe2+Fe3+H2O2·OHH2O2O2[9]。CODO3+BAF0.5ml/L。2.2.3pHFenton/1.50.5mL/LpHpHFenton6。6pH3~5CODFe2+H2O2·OH。pHH+2Fe3+Fe2+pH·OH2CODTable2EffectofaerationtimeonCODremovalefficiency(h)061218243036COD(mg/L)11089.778.469.066.766.766.0COD(%)014.522.728.230.330.330.93CODTable3EffectofmoleratioofFe2+andH2O2onCODremovalefficiency(g/L)00.5123456(mL/L)01111111COD(mg/L)218131120104807578115COD(%)39.945.052.363.365.664.247.2()25664323216161632(%)75.087.587.593.893.893.887.514411Fe2+。2.2.4BAFFenton0.5mL/L2g/LpHBAF64。4BAFCOD。18h40.4%COD70mg/L。Fenton[9]Fenton82.6%60%BAF。31O3+BAFFenton+BAFCOD70mg/L50GB13456-92。-ZL200510035132.921kg20kWh0.69.6/m327.5%2000/t600/tFenton2.3/m3Fenton。3O3+BAFFenton+BAF。[10]O3。。[][1].A/O2GC/MS[J].20062111785-1791.RenYuanWeiChao-haiWuChao-feietal.Organiccom－poundsanalysisbyGC/MSduringthebiologicalfluidizedbedA/O2processofcokingwastewater[J].ActaScientiaeCir－cumstantiae20062111785-1791.inChinese[2].[J].20072771083-1093.WeiChao-haiHeMing-heRenYuanetal.Pollutioncharacteristicsofcokingwastewaterandcontrolstrategiesbiologicaltreatmentprocessandtechnology[J].ActaScienti－aeCircumstantiae20072771083-1093.inChinese[3].O3[J].200839436-40.LiRui-huaWeiChao-haiRenYuanetal.Removalofpollutantsincokingwastewaterbymeansofozonecatalyticoxidation[J].Fuel＆ChemicalProcesses200839436-40.inChinese[4].AOTs[J].199831263-66.WangLinSunSheng-cheng.Advancedoxidationtecholo－giesandutilizationinlandfillleachatetreatment[J].JournalofHarbinUniversityofCE＆Architecture199831263-66.inChinese[5].[J].200831196-99.ChenSi-liWangXiao-junGuXiao-yangetal.Ad－vancedoxidationprocessforphenolwastewater[J].Environ－mentalScience＆Technology200831196-99.inChinese[6].Fenton[J].200021393-96.ChenChuan-haoXieBoRenYuanetal.MechanismsofaffectingfactorsintreatingwastewaterbyFentonreagent[J].EnvironmentalScience200021393-96.inChinese[7]DelaatJGallardHAncelinSetal.ComparativestudyofoxidationofatrazineandacetonebyH2O2/UVFe/UVFe/H2O2/UVandFeorFe/H2O2[J].Chemospere199939152693-2706.[8].Fenton-[J].200214227-29.ChengJie-hongLiEr-yangLiDing-long.TrialstudiesonlandfillleachatetreatedbyFentonoxidation-coagulation[J].JournalofJiangsuInstituteofPetrochemicalTechnolo－gy200214227-29.inChinese[9].Fenton[J].2009325141-143.LiuJian-yuWangXiao-jun.Advancedtreatmentoffine-chemicalswastewaterbyFentonreagent[J].EnvironmentalScience＆Technology2009325141-143.inChinese[10].Fenton/[J].2006,27112201-2205.ZuoChen-yanHeMiaoZhangPeng-yietal.StudyonFentonoxidationcooperatedwithcoagulationofbiological－lytreatedcokingwastewater[J].EnvironmentalScience200627112201-2205.inChinese4CODTable4EffectofaerationtimeonCODremovalefficiency061218243036COD(mg/L)1129486.766.764.56561.6COD(%)016.122.640.442.442.045.0-BAF145