常温条件下CAST工艺亚硝酸型硝化的实现及特性刘艳辉

57Vol．5No．720117ChineseJournalofEnvironmentalEngineeringJul．2011CAST121212312121241．3003842．3003843．1001244.980-8576CASTDO0.13～0.74mg/LDO0.7～3.36mg/L1.5h。14℃NO2-N90%TN68%SVI105NH4-N8mgNH4-N/gMLSS·h6mgNH4-N/gMLSS·h。X703.1A1673-9108201107-1454-05RealizationandperformanceofnitrificationvianitriteinCASTprocessatnormaltemperatureLiuYanhui12SunLiping12WangShaopo123LiuYuan12YuJingjie12LiYuyou1241．DepartmentofEnvironmentalandMunicipalEngineeringTianjinInstituteofUrbanConstructionTianjin300384China2．TianjinKeyLaboratoryofWaterQualityScienceandTechnologyTianjin300384China3．CollegeofEnvironmentalandEnergyEngineeringBeijingUniversityofTechnologyBeijing100124China4.TohokuUniversitySendai980-8576JapanAbstractSimulateddomesticsewagewastreatedthroughthecyclicactivatedsludgetechnologyCASTresultsshowedthatthroughaerationdurationcontrolpartialnitrificationwascarriedoutinalab-scaleSBRatnormaltemperaturewhenDOconcentrationrangedfrom0.13mg/Lto0.74mg/LandpartialnitrificationwasmaintainedforalongtimewhenDOconcentrationrisedto0.7～3.36mg/L．Accumulationrateofnitritewassteadilykeptover90%averagetotalnitrogenremovalrateofeffluentwas68%afterasludgeretentiontimethoughaccumulationrateofnitritewaslowandfluctuatedattheinitialexperimentalstage．TheSVIofthesystemwasabout105duringtheexperimentthesludgewasingoodsettlementnosludgebulking．Atthesametimeaccordingtothecomparionofnitrificationrateofnitrousnitrificationandcompletenitrificationammoniaoxida-tionratedroppedfrom8mgNH4-N/gMLSS·hto6mgNH4-N/gMLSS·h．InadditionpartialnitrificationcouldbetransformedintocompletenitrificationeventhroughaccumulationrateofnitritewassteadilykeptifaerationtimeandtheDOconcentrationwereunreasonablycontrolled．KeywordspartialnitrificationnormaltemperaturelowDOconcentrationammoniaoxidationrate50808128“”2008ZX07209-006200904601822010－03－162010－04－131985～。[e-mail]25%40%12。、、7CAST34。AOBNOB56。。DO。78。CASTCAST。11．128.8L21.6L13.3%、、、、。。。pH、DO1。1CASTFig.1DiagramofCASTreactor1.2COD300mg/L。NH4-N50mg/LPO4-P5mg/L。NaHCO3NaHCO3600mg/L。。1．3CAST4、、。212h2h1h1h4h6。20%1。21h0～30min311.5h1h1h10.5h0．5h2。2。0～4210.2m3/h43243～480.1m3/h3dNO2-N＞95%。490．2m3/hNO2-N。MLSS4000～5000mg/LHRT12hSRT21d14℃。2Fig．2OperationproductioninCAST1．49CODNH4-NNO3-NNO3-NN-1--PO4-PSV、SVIMLSSpH、DOWTW340i55415。23NH4-N、NO3-NNO2-NTNNO2-N。TN61.36%TNNO3-N2TN68.36%TNNO2-N。TNNO3-N。3Fig．3PerformanceofnitrogenremovalinCASTsystemunderdiferentconditions2NH4-NN02-N3d18＞95%。0.2m3/hSVI105。NO2-NNO2-N90%NOBNOBAOBNOB10“”AOBNOBAOB。4～6。4Fig．4Nitrogenconcentrationofaerobiczoneinonecycleinconventionalmode5Fig．5Nitrogenconcentrationofaerobiczoneinonecycleduringtheprocessoftherealizationofpartialnitrification6Fig.6Typicaltransformationofnitrogenduringonecycleaftertherealizationofpartialnitrification65417CAST44NH4-NNH4-N0mg/LNO2-N0mg/L。5NH4-NNO2-N。NH4-N。NO2-N95%6630minNO2-N4.45mg/L2.55mg/LNO2-N1hNO2-N11.25mg/LNO3-NNO2-N90～120NO2-NNO3-N120min。120NH4-N0mg/LNH4-N120～150minNO2-NNO2-NNO3-NNO3-N。SBR。SBR4L3LSBR1h。NH4Cl50mg/LNH4-N、KH2PO4、NaHCO30.3m3/h0NH4-NMLSS4000mg/L。775minNH4-NNO3-N。7Fig．7Nitrogenconcentrationinnitrationactioninconventionalmode8Fig．8NitrogenconcentrationinnitrationactionaftertherealizationofpartialnitrificationNH4-N8mgNH4-N/gMLSS·h8120minNH4-N6mgNH4-N/gMLSS·hNH4-N880minNO2-N50%NOB。80NO3-N110NO2-N。31NO2-N90%。2TN61.36%TNNO3-NTN7541568.36%TNNO2-N。3NH4-N8mgNH4-N/gMLSS·hNH4-N6mgNH4-N/gMLSS·h。1VerstraeteW．PhilipsS．Nitrification-denitrificationprocessesandtechnologiesinnewcontexts．EnvironmentalPollution1998102S1717-7262TurkO．MavinicD．S．Preliminaryassessmentofashortcutinnitrogenremovalwastewater．Can．J．Civ．Eng．19866613600-6053．．200840101552-1557ZhuGuibingPengYongzhenGuoJianhua．Biologicalni-trogenremovalwithnitrificationanddenitrificationviani-tritepathway．JournalofHarbinInstituteofTechnology200840101552-1557inChinese4RuizgG．JeisonD．ChamyrR．Nitrificationwithhighnitriteaccumulationforthetreatmentofwastewaterwithhighammoniaconcentration．WaterRes．20033761371-13775HaoXiaodiJosephJ．MarkC．M．Model-basedevalua-tionoftemperatureandinflowvariationsonapartialnitrifi-cationANAMMOXbiofilmprocess．WaterRes．200236194839-48496．．200526163-67GaoDawenPengYongzhenWangShuying．Stabilityofshortcutnitrification-denitrification．EnvironmentalSci-ence200526163-67inChinese7GarrIdo-FernandezJ．M．MendezR．etal．Thecircu-latingfloatingbedreactorEffectofpaniclesizedistribu-tionofthecarrieronammoniaconversion．Wat．Sci．Tech．2000414-5393-4008．-．200016229-31YuanLinjiangPengDangcongWangZhiying．Short-cutnitrificationanddenitrification．ChinaWaterandWastewater200016229-31inChinese9．4．200210BlackburneR．VadiveluV．M．YuanZ．etal．De-terminationofgrowthrateandyieldofnitrifyingbacteriabymeasuringcarbondioxideuptakerate．WaterEnviron．Res．200779122437-24458541