UVH2O2法处理焦化废水的试验研究

pH/NTU/ρ(COD)ρ(BOD5)ρ()ρ()9．051801280453814974915830，，，、，、，[1]。，，[2]。UV/H2O2。，UVH2O2，H2O2UV·OH，，[3]。UV/H2O2[4-5]，UV/H2O2，，。11.1，1，《》[6]。1.2：（，GGZ-300）；（，81-2）；DODCr（，WMX-3-A）；（HACH，2100）；PH（ECTECH，PH510）。：H2O2CODCr、、，。UV/H2O21，2，1，3，1（1.，510006；2.，521011；3.，511400）：。UV/H2O2，、H2O2、pHCOD。，COD1334mg/L，H2O245mmol/L，pH=11，60min，COD70%；H2O2pH，。：；UV/H2O2；COD；:X7:A:1674-4829（2010）01-0005-03：2009－11－10：（62060）．：（1983-），，，，，、、，.ExperimentalStudyonTreatmentofCokingWastewaterbyUV/H2O2ProcessZHANGZe-biao,LIUQin-zeng,CUIMing-chaoAbstract：Thecokingwastewaterisakindofrecalcitrantwastewaterwithcomplicatecompositions.Inthispaper,experimentswerecarriedouttostudythetreatmentofcokingwastewaterbyUV/H2O2process.Theinfluencingfactors,suchasH2O2dosage,reactiontimeandpHvalueswereevaluatedfortheremovalefficiencyofCODandcolourityofcokingwastewaterbyUV/H2O2process.TheexperimentalresultsshowedthatforthewastewaterwithCODof1334mg/L,theremovalefficiencyofCODwouldbehigherthan70%undertheconditionsof45mmol/LH2O2,pH11andtheUVirradiationtimeof90min.TheincreaseofH2O2dosageorpHvaluewouldcontributetotheremovalofcolourity.Keywords：Cokingwastewater;UV/H2O2;COD;Colourity23120102EnvironmentalScienceandTechnologyVol．23No．1Feb．20101mg·L-1201024H2O2COD8060402005004003002001000COD0183645547290COD/%C（H2O2)/(mmol·L-1）/2COD100806040200COD/%020406080t/min○■△UVH2O2UV/H2O2△△△△△△△○○○○○○t/min6004002000020406080100◆□▲UVH2O2UV/H2O2/▲▲▲▲▲▲◆◆◆◆◆□□□□□100mL1UV/H2O21.3100mL，，120r/min。，1。，，4，COD、H2O2pH。22.1UV/H2O223C（H2O2）45mmol/L、、C(H2O2)45mmol/L+3，COD。2，H2O2COD；COD，27％；UV／H2O2，COD，，90min61％。，60minCOD，，COD。3，H2O2，，；，，；UV／H2O2，，。,H2O2UV(·OH)，UV／H2O2。2.2H2O2UV/H2O2H2O2，60minCOD4。4，H2O2，COD，H2O2(54mmol/L)，COD。UV／H2O2H2O2。H2O2·OH，；，H2O2，COD。H2O2，，H2O218mmol/L，36231UV/H2O2/80604020010008006004002000CODCOD/%0357911pH，H2O2。2.3pHUV/H2O25，pH3，5，7，9，11。45mmol/LH2O2、60min，COD5。5，pH，COD，，。H2O2·OHpH，①H2O2→HO2－+H＋（pKa=11.6）[7]②HO2－＋hv→·OH+O·－2[8]，，·OH。[9-10]，UV/H2O2，，。，pH，，pHUV/H2O2，，pH。3，，pHH2O2·OH，pHCOD。COD。3（1）UV/H2O2，COD1334mg/L，H2O245mmol/L，pH=11，60min，COD70%，。（2），H2O2。H2O2。（3）pHUV/H2O2，。［］[1]，.[J].，2009，22(4):25-27.[2]，，.UV-Fenton[J].，2008，34(10):42-45.[3]，，.UV/H2O2[J].，2004，36(12):1686-1689.[4]，，.UV/H2O2[J].，2004，23(6):636-639.[5]，.UV/H2O2/[J].，2008，21(1):48-50.[6]，，．[M]．3.：，2004．[7]LEGRINIO,OLIVEROSE,BRAUNAM.Photochemicalprocessforwatertreatment[J].ChemRev,1993(93)∶671-698.[8]SHENGYS,KUY,LEEKC.TheeffectoflightabsorbanceonthedecompositionofchlorophenolsbyultravioletradiationandUV/H2O2processes[J].WarRes,1995(29)∶907-914.[9]ABDULLAHFH,RAUFMA,ASHRAFSS.KineticsandoptimizationofphotolyticdecolorationofcarminebyUV/H2O2[J].DuesandPigments,2007(75):194-198.[10]POONCS,HUANGQ,FANGPC.DegradationineticsofcuprophenylyellowrlbyUV/H2O2/Ultrasonication(US)processinaqueoussolution[J].Chemosphere,1999(38)∶1005-1014.（）5pHCOD《》7