O3H2O2法处理印染废水二级出水的试验研究王炜

39820108　　　AppliedChemicalIndustryVol.39No.8Aug.2010:2010-05-13:(1981-),,,,。:13913019628,E-mail:[e-mail]3/H2O2王炜(,　210008)　:H2O2,pH6.8500mL,48mg,0.1mLH2O2,O3/H2O2CODcr7.9%。O3/H2O2,H2O2pH;H2O2CODcrH2O2。:;;O3/H2O2;:X703.1　　　:A　　　:1671-3206(2010)08-1194-04PilottestonadvancedtreatmentofprintinganddyeingwastewaterbyO3/H2O2processWANGWei(NanjingMunicipalDesignandResearchInstituteCo.,Ltd.,Nanjing210008,China)Abstract:IntheozonationcooperatedwithH2O2,forthe500mLwastewaterwithinitialpHvalueof6.8,whenozonedosagewas48mgand0.1mLH2O2wasaddedinreactorbeforereaction,theremovalrateofCODcrinO3/H2O2ishigherthantheremovalrateofCODcrinozonationalone7.9%.ForO3/H2O2process,withincreasingtheinitialpHvalueofwastewater,theoptimumdosageofH2O2decreased.There-movalrateofCODcrinmosttimebypre-addingisbetterthanthatbyintermittentadding.Keywords:ozone;printinganddyeingwastewater;O3/H2O2;advancedtreatment　　,,。、,。,、[1]。H2O2,·OH,。pH、H2O2、O3/H2O2。1　1.1　　　:pH6.2～7.8,CODcr100～160mg/L,20～30;、、30%、。　　KT-OZ-3G;PHS-3CpH;G10T8UV(10W)。1.2　　　,,,,KI,1。1　Fig.1　Experimentflowchart　　,。70cm,50mm。。,。。。DOI:10.16581/j.cnki.issn1671-3206.2010.08.0438:O3/H2O2,:3.6mg/L,40L/h,500mL,20min。:①,,10min,,;②H2SO4NaOHpH;③UV,UV。1.3　　　CODcr。2　2.1　H2O2O3/H2O2　　,H2O2O3/H2O2,4:H2O20.0,0.075,0.10,0.125mL,。pH6.8,H2O2,,2。2　H2O2Fig.2　EffectofH2O2dosage　　2,,O3/H2O2H2O20.10mL,CODcr,49.1%,,H2O20.10mL,·OH,H2O20.10mL,·OH。,H2O2·OH;,H2O2+2O3※2·OH+3O2[2],·OHH2O2,·OH。2.2　pHO3/H2O2　　pHO3/H2O2,,:pH3.0,5.0,6.8,9.0,11.0,。:pH3.0,5.0,6.8,9.0,11.0,H2O20.10mL,O3/H2O2。H2O2,,3。3　pHFig.3　EffectofinitialpHvalue　　3:,O3/H2O2CODcrpH,pH6.8,CODcr,49.1%;pH11.0,CODcr38.5%,44.0%。:O3+HO-2※·OH+O-2+O2[2],HO-2O3/H2O2·OH;H2O2+H2O→※HO-2+H3O[2],HO-2H2O2,H2O2,pHHO-2,·OH,pH,;,CODcrpH。:pH,·OH,pH,·OH,,。2.3　pHO3/H2O2H2O2　　　O3/H2O2,H2O2O3,,,pH。pH,H2O2,O3/H2O2,4。1195394　pHH2O2Fig.4　EffectofinitialpHvalueonH2O2dosage　　4,pHH2O2,pH。pH3.0,5.0,6.8,9.0,11.0,0.15,0.125,0.10,0.05,0.025mL。:O3+HO-2※·OH+O-2+O2[2],HO-2O3/H2O2·OH;H2O2+H2O→※HO-2+H3O+[2],HO-2H2O2,H2O2,pHHO-2,·OH,H2O2,pHHO-2,·OH,H2O2。2.4　H2O2O3/H2O2　　,H2O2:①;②,。H2O2O3/H2O2,O3/H2O2:①,0.1mLH2O2;②,、5,10,15min0.025mL。pH6.8,5min,H2O2,5。5　H2O2Fig.5　EffectofH2O2dosingmethod　　5,20min,H2O2CODcr;15min,H2O2CODcr。,·OH。,H2O2,HO-2,,·OH,·OH,·OH,H2O2,·OH,·OH,11968:O3/H2O2。,H2O2,·OH,,。H2O2,、·OH,,CODcr,,。2.5　O3/H2O2　　O3/H2O2,·OH,(、)·OH,O3/H2O2。·OH,KR=3.0×10-3L/(mol·s),·OHKR=5.9×108L/(mol·s)[3],·OH,[4],。,。,0.00,0.05,0.20mL,;:0.10mLH2O2,O3/H2O2。pH6.8,H2O2,,6。6　Fig.6　Effectoftert-butylalcoholdosage　　6,O3/H2O2。:O3/H2O2,·OH,,·OH,CODcr;·OH,。0.20mL,O3/H2O2,,·OH,。3　　　(1)pHO3/H2O2,O3/UVO3/H2O2/UV。(2)O3/H2O2H2O2pH。(3)O3/H2O2,H2O2,CODcr,,。(4),,O3/H2O2·OH。:[1]　HoigneJ,BaderH.Rateconstantsofreactionsofozonewithorganicandinorganiccompoundsinwater-Ⅱ,disso-ciatingorganiccompounds[J].WatRes,1983,17:185-194.[2]　StaehelinJ,HoigneJ.Decompositionofozoneinwater:Rateofinitiationbyhydroxideionsandhydrogenperoxide[J].EnviromentalScienceTechnology,1982,16:676-681.[3]　GurolMD,AkataA.Kineticsofozonephotolysisinaque-oussolution[J].AICHEJournal,1996,42:3283-3292.[4]　.[D].:,2001.1197