臭氧曝气生物滤池组合工艺处理石化二级出水的试验研究

35220142ENVIＲONMENTALSCIENCEVol．35No．2Feb．2014-1222*34151.1000832.1000123.0560384.1160325.132000-pHCOD、UV254．10mg·L－14minpH．100015%．3h3∶1COD、UV25440.8%45.8%．COD86.5mg·L－1COD49.4mg·L－1．-X703.1A0250-3301201402-0651-062013-05-172013-10-092012ZX07201-005512084841988～[e-mail]*[e-mail]calSecondaryEffluentbyOzone-biologicalAeratedFilterLIUMing-guo12WUChang-yong2ZHOUYue-xi2GAOZhen3WANGPei-chao4YANGQi1DONGDe51.SchoolofWaterＲesourceandEnvironmentChinaUniversityofGeosciencesBeijing100083China2.ＲesearchCenterofWaterPollutionControlTechnologyChineseＲesearchAcademyofEnvironmentalSciencesBeijing100012China3.SchoolofUrbanConstructionHebeiUniversityofEngineeringHandan056038China4.SchoolofMarineScienceandTechnologyandEnvironmentDalianOceanUniversityDalian116032China5.MaterialsProcurementCompanyPetroChinaJilinPetrochemicalCompanyJilin132000ChinaAbstractTheadvancedtreatmentofpetrochemicalsecondarywastewaterbyozone-aeratedbiologicalfilterwascarriedoutinthisstudy．TheeffectofpHonozonationandtheremovalofCODandUV254bytheozone-aeratedbiologicalfiltercombinedprocesswereinvestigated．Inadditionthevariationofrelativemolecularmassdistributionoforganicsandthecharacteristicsofthree-dimensionalfluorescencespectraofthewastewaterwerealsoinvestigated．Theresultsshowedthatthesuitableoperatingconditionsoftheozonationunitwereozonedosage10mg·L－1contacttime4minandslightlyalkalinepH．Ozonationcantransfermacromolecularorganicsintosmallmolecularorganicsresultingina15%increaseinthepercentageoftheorganicswithsmallrelativemolecularmasslessthan1000．Thebiodegradabilityofthepetrochemicalsecondaryeffluentwassignificantlyimprovedbyozonationmakingitmoresuitableforthetreatmentbyaeratedbiologicalfilter．TheremovalefficiencyofCODandUV254were40.8%and45.8%whenthehydraulicretentiontimewas3hoursandthegastowaterratiowas3∶1forBAF．TheaverageCODofthepetrochemicalwastewaterwas86.5mg·L－1whiletheaverageCODoftheeffluentofthecombinedprocesswas49.4mg·L－1whenitwasoperatedunderoptimalconditions．Keywordspetrochemicalsecondaryeffluentozone-biologicalaeratedfilteradvancedtreatmentrelativemolecularmassdistributionthree-dimensionalfluorescencespectra、、、、12．《》GB8978-1996．biologicalaeratedfilterBAF353～6．BAF．．2.07V、．、7～9．-10．．11.1YG-55g·h－1．-IDEAL2000．20%KI．10cm200cm10cm0.4～0.6cm120cm．1.8L·h－1．pH1110mg·L－14min75.6%8min、12min77%79.3%．COD124min0.84kW·h．10mg·L－14min30d-3h3∶153d．1.2COD80～110mg·L－1BOD50.85～4mg·L－1UV2540.6～0.8cm－1NH+4-N2mg·L－1TN14mg·L－1pH7～8．UV254、COD、pH、DO、BOD5、TOC、、．pHDOWTW340iCODBOD5TOCTOC-VCPH/CPN12．0.45μm0.1MPa13MilliporeModels8400100×103、30×103、10×103、5000、3000、1000HITACHIF-70005nm200～500nm10nm1500nm·min－1．22.1pHpH．pH7～8pH5、6、7、8、9、10pH．pHTN12．1COD、UV254BOD5/CODpH．pH=5CODUV25418%38%pH1027%53%．2562-1415．·OH、1617．2pHBOD5．TNTN10～20mg·L－1．1pHCODUV254Fig．1EffectofpHontheremovalofCODandUV254duringozonation2pHFig．2EffectofpHonthebiodegradabilityofsecondaryeffluentduringozonation2.2CODCOD86.5mg·L－1COD68.7mg·L－1COD49.4mg·L－1．3COD18mg·L－118.8%BAFBAFCODCOD22.0%．CODBAFCOD．3CODFig．3CODremovalcharacteristicsofthecombinedprocess2.3UV2544-UV254Fig．4UV254removalcharacteristicsofthecombinedprocessUV254254nmCC、CO、、、18．CC、COUV25419．4UV25435635UV25430.7%BAFUV25415.3%．．5Fig．5Variationsofmolecularmassdistributionoforganicsduringthetreatment2.4BAF．51000100×10352%、26%100067%100×1038%．．BAFBAFBAF100067%40%．BAF100040%．．2.520～22．6BAF．1、2Ex/Em=230/345、Ex/Em=275/3451π—π223．1．1Table1PositionandintensityoffluorescenceinwastewatersamplesEx/EmBAF1230/3456009829.411432275/3452681464.3788.82/10.450.562/124．25～10nm15～10nm．Chen254562-6、BAFFig．6Three-dimensionalfluorescencespectraofrawwaterozonationeffluentandBAFeffluentduringthetreatment、、、．2．、1．、80%、、11．．31COD、UV254．pH8～10pH10COD27%UV25453%pHBOD54pH．2-10mg·L－14min3h3∶170～110mg·L－1COD50mg·L－1UV25441.8%．3100×1031000100015%100027%．4．1．J．200912129-134.2．J．201121647-50．3．J．199920483-85．4MannATStephensonT．ModellingbiologicalaeratedfiltersforwastewatertreatmentJ．WaterＲesearch199731102443-2448．5．J．200218826-29．6SchepperWDDriesJGeuensLetal．Conventionalandecotoxicologicalassessmentofbatchpartialozoneoxidation55635andsubsequentbiologicaltreatmentofatanktruckcleaninggeneratedconcentrateJ．WaterＲesearch200943164037-4049．7BarredoDSIborra-ClarMIBes-PiaAetal．Studyofpreozonationinfluenceonthephysical-chemicaltreatmentoftextilewastewaterJ．Desalination20051821-3267-274．8HsuYCYangHCChenJH．TheenhancementofthebiodegradabilityofphenolicsolutionusingpreozonationbasedonhighozoneutilizationJ．Chemosphere2004562149-158．9．J．2006222285-288．10．-J．2008378917-920．11．J．20136493390-3395．12CJ/T3028.2-94S．13．J．199718313-16．14．-J．200827540-43．15．-J．200911383-84．16TomiyasuHFukutomiHGordonG．KineticsandmechanismofozonedecompositioninbasicaqueoussolutionJ．InorganicChemistry198524192962-2966．17StaehelinJHoigneJ．DecompositionofozoneinwaterinpresenceoforganicsolutesactingaspromotorsandinhibitorsofradicalchainreactionsJ．EnvironmentalScienceandTechnology198519121206-1213．18．/J．2006261132-36．19．-J．201036888-91．20ChenWWesterhoffPLeenheerJAetal．Fl