臭氧催化氧化深度处理焦化废水的试验研究何灿

225Vol.22No.520169CleanCoalTechnologySep．20161231．1000112．1000133．100085CODcr、、pH、CODcr。68dCODcr140～200mg/L1.5h80mg/L·hCODcr60%《》GB16171—2012。1.30/m31/4～1/2。、、。X703A1006－6772201605－0053－06AdvancedtreatmentofcokingwastewaterbyozonecatalyticoxidationtechnologyHECan1LIULizong2HEWenli31．InnovatingIndustrialWaterTechnologyCo．Ltd．Beijing100011China2．CoalScienceandTechnologyＲesearchInstituteCo．Ltd．Beijing100013China3．GoHigherEnvironmentCo．Ltd．Beijing100085ChinaAbstractTheCODcroftheeffluentfromthesecondarybiologicaltreatmentprocessofcokingwastewatercouldn＇tmeetthestandard．Inor-dertoresolvetheproblemtheeffectsofadvancedtreatmentofcokingwastewaterbyozonecatalyticoxidationtechnologywasanalyzedthroughapilottest．TheinfluenceofpHvaluereactiontimeozonedosageandthecatalystonCODcrremovalratewereinvestigated．Theoptimaloperatingparametersweredetermined．After68dayscontinuousoperationwhenthedosageofCODcrrangedfrom140mg/Lto200mg/Lthereactiontimewere1．5htheozoneflowvelocitywere80mg/L·htheaverageCODcrremovalratewasabove60%whichmettheEmissionStandardofPollutantsforCokingChemicalIndustryChinaGB16171—2012．TheoperationcostwasＲMB1.30percubicmeterwhichaccountedforonly25%to50%oftheoperationcostofforcedcoagulationandsedimentationtechnology．Theprocesswasstableandreliableinoperation．Thespecificsurfaceareaandporestructuredidn＇tchangesignificantlyafterandbeforetheuseofcata-lyst．Meanwhilethecatalyststillhadactivity．Keywordsozonecatalyticoxidationcokingwastewateradvancedtreatment2016－06－27DOI10．13226/j．issn．1006－6772．2016．05．0101984—。[e-mail]gwastewaterbyozonecatalyticoxidationtechnologyJ．CleanCoalTechnology201622553－58．0、、、、60%、10%、501、、、CODcr23。A/O、A2/O、A2/O2SBＲ4352016522CODcr200～350mg/L5《》GB16171—2012、、。、、CODcr70～120mg/L。、。、、。。6－7·OH8－10、。、、、11。。11.1A2/OCODcr140～200mg/LNH3－N0.7～2.9mg/LpH7.15～8.3525～37℃500～700。1.2、1。。SODO－Ⅱ170%。1Fig.1Schematicdiagramoftheozonecatalyticoxidationequipment1Table1Indexparametersofthecatalysts/mm/m2·g－1/cm3·g－1/g·mL－1/N·－1γ－Al2O33～5≥1800.4～0.60.65～0.75≥100316L600mm×2200mm。。CF－G－2－100g100g/h。、。。230minpH、CODcr。68d。1.3CODcrCOD4520165DＲB200、DＲ890pHWTWMulti3410KＲOHNEOPTISYSCL1100MiromeriticsASAP2020M。22.145、80、140、220、280、320mg/L·hCODcr。52。2CODcrFig.2EffectofozonedosageonCODcrremovalrate2CODcr2h45、80、140、220、280、320mg/L·hCODcr59.9%、68.2%、68.1%、75.7%、73.5%、76.8%。1CODcr1h4hCODcr60mg/L5CODcr40mg/L。。45mg/L·hCODcr。·OHCODcr。·OH·OH·OH12。CODcr2。2CODcrTable2OzoneconsumptionoftheremovalofunitCODcr/mg·L－1·h－1CODcr/mg·L－11h2h/CODcr/kg·kg－11h2h45891180.510.76801021280.781.25140891131.572.482201201401.833.142801061222.644.593201281462.504.382CODcrCODcr。·OH。。80mg/L·h。80mg/L·hCODcr3。CODcr3hCODcr。CODcr552016522140～200mg/L1.5h60%≤80mg/L1.5h。3CODcrFig.3EffectofreactiontimeonCODcrremovalrate2.2pHpHpH2、3、5、9、11pH7～84。4pHCODcrFig.4EffectofpHonCODcrremovalrate4CODcr·OH·OH。pHCODcrpH9CODcr69.2%OH－·OH·OH·OH2.8V。pH9CODcrpHCODcr。pH·OH12。OH－O3·O·OH13。pH14。7.15～8.35pH。2.3SODO－ⅡCODcrCODcr50%。C0CODcrCttCODcr－lnCt/C05－lnCt/C0=kt。ks－10.0930.9157ks－10.3120.9366。3.35。5CODcr—lnCt/C0—tFig.5Plotsof—lnCt/C0—tfordegradationofCODcrbyozonecatalyticoxidationandozoneoxidationprocessCODcr24hCODcr≤1%。CODcr·OH。SODO－Ⅱ6520165CODcr140～200mg/LCODcr80mg/L80mg/L·h1.5h120mg/L15－16、13、/17。2.468d80mg/L·h1.5h250L/h。CODcr140～200mg/LpH7.15～8.35。36。6CODcrFig.6CODcrremovalratebyozonecatalyticoxidation6CODcr140～200mg/LCODcr80mg/L《》GB16171—201260%。500～70030。pH8.011.5hpH7.780.23pH。pH。。2.568d3、、、。。3Table3Parametersofthecatalystsbeforeandafterreaction/m2·g－1/mL·g－1/nm/N·g－1199.250.485.66140198.750.465.761392.6。。13.5kWh/kgO3120g/m31.62kWh/m30.8/kWh1.301/4～1/2。。31pH、。pH80mg/L·h1.5h。。2。SODO－Ⅱ3.35752016522CODcr50%。3CODcr140～200mg/LSODO－Ⅱγ－Al2O368dCODcr60%《》GB16171—2012。、。1.301/4～1/2。。Ｒeferences1．M．2008．2．CODJ．200831162－64．WuGaomingLiuHanjieLuXiaohua．CODanalysisofcokingwastewatertreatmentwithactivatedsludgeJ．EnvironmentalSci-ence＆Technology200831162－64．3．－－J．．201546460－62．GuoJun．Projectexampleofcokingwastewateradvancedtreatmentbyozonecatalyticoxidation－ultrafiltration－reverseosmosisJ．In-dustrialWater＆Wastewater201546460－62．4．A/OJ．200728122727－2733．LaiPengZhaoHuazhangYeZhengfangetal．StudyontreatmentofcokingwastewaterbyA/OprocessofbiologicalfilterJ．Envi-ronmentalScience200728122727－2733．5．J．2010163100－103．GuoShengWangGuanghuaLiWenbinetal．StudyonadvancedtreatmentofcokingwastewaterwithbiologicalactivatedcarbonprocessJ．CleanCoalTechnology2010163100－103．6ＲestivoJOrfaoJJMArmeniseSetal．Catalyticozonationofme-tolachlorundercontinuousoperationusingnanocarbonmateri-alsgrownonaceramicmonolithJ．JournalofHazardousMateri-als20124249－256．7NawrockiJKasprzyk－HordernB．TheefficiencyandmechanismsofcatalyticozonationJ．AppliedCatalysisBEnvironmental2010991/227－42．8BekarDCzapskiGDuchovnyI．Carbonateradicalsinflashphotol-ysisandpulseradiolysisofaqueouscarbonatesolutionsJ．JournalofPhysicalChemistry197074102206－2210．9CristensenKSehestedKCorfitzenH．Ｒeactionsofhydroxylradi-calswithhydrogenperoxideatambientandelevatedtemperaturesJ．JournalofPhys