处理城市污水的好氧颗粒污泥培养及形成过程刘绍根

23720107ResearchofEnvironmentalSciencesVol.23No.7July20101212222*1.2300222.230026SBR.、.40d160d0.8mm.、ρMLSS1.0040g/cm36.8m/h4000mg/L1.0105g/cm338.5m/h8000mg/LSVI3075mL/g40mL/g.CODCrNH4+-NρCODCrρNH4+-N505mg/L.X703A1001－6929201007－0918－06CultivationandGranulationProcessofAerobicGranularSludgeAppliedtoTreatMunicipalWastewaterLIUShao-gen12MEIZi-kun1XIEWen-ming2NIBing-jie2LIWen-wei2YUHan-qing21.SchoolofEnvironmentalandEnergyEngineeringAnhuiUniversityofArchitectureHefei230022China2.SchoolofChemistryandMaterialScienceUniversityofScience＆TechnologyofChinaHefei230026ChinaAbstractInthisstudylow-strengthmunicipalwastewaterwasusedtocultivateaerobicgranularsludgeinapilot-scalesequencingbatchreactorSBR.Duringthegranulationprocessthecharacteristicsofthesludgewereinvestigatedandtheoperationparameterssuchassettlingtimeandvolumeexchangeratiowereadjustedandoptimizedaccordingtothecharacteristicsofsludgeinthereactortocultivatehigh-poweredandstableaerobicgranularsludge.Thegranuleswithsmallsizewereobservedinthereactorafter40days’cultivation.After160days’cultivationthegranulesbecamemature.Theirmaximumsizereached0.8mmandamassofprotozoaappearedaroundthegranules.InthecourseofgranulationthespecificgravitysettlingvelocityandmixedliquorsuspendedsolidsMLSSmassconcentrationincreasedfrom1.0040g/cm36.8m/hand4000mg/Lattheinitialstageto1.0105g/cm338.5m/hand8000mg/LrespectivelywhilethesludgevolumetricindexSVI30decreasedfrom75mL/gto40mL/g.TheconcentrationsofCODCrandNH4+-Nintheeffluentfromthegranularreactorwerebelow50and5mg/LrespectivelyindicatinghighremovalefficienciesofCODCrandNH4+-Nbytheaerobicgranularsludge.Keywordsmunicipalwastewatergranulationpilot-scaleaerobicgranularsludge2010－01－202010－03－012008ZX07010－005“”[e-mail].*[e-mail]、1.2-45-7、.MOY8.ρCODCr、.SBRDOI10.13198/j.res.2010.07.61.liushg.0137.11.1SBR1.9SBR.6.0m0.5m3.0m1.0m3.3.02.52.0m50%60%70%...、、..1—2—3—4—5—1SBRFig.1Schematicdiagramofthepilot-scaleSBR1.2SBR5×104m3/dρCODCr200mg/L.SBRρMLSS5000～7000mg/L10dSVI3075mL/g1.0040g/cm36.8m/h..0.7m3ρMLSS4000mg/L.1.1Table1CompositionsofthemunicipalwastewaterρCODCr/mg/L100～400ρNH4+-N/mg/L10～40ρTN/mg/L12～50pH6.5～7.51.3、3.0m2.5m2.0m.40d15d.200d2.2Table2OptimumoperatingparametersofSBR/d/%/m3/〔kg/m3·d〕11～304h5min185～195min20～30min20min500.50.5231～803h5min125～140min15～30min20min600.60.9381～2003h5min140min15min20min700.71.2919231.4ρCODCrρNH4+-NρMLSSρMLVSSSVSVI3010OlympusCX41JapanOlympusC5050ZoomJapanImage-proExpress4.0MediaCybernetics.7.0cm...22.12.20d.40ZHU311-122Fig.2Formationandevolutionoftheaerobicgranularsludge.、.40d80d0.3mm.①3h.WANG13.②50%60%〔0.5kg/m3·d0.9kg/m3·d〕.14...120d30.8mm.160d0.2～0.8mm.3Fig.3Protozoaonthematureaerobicgranularsludgesurface2.22.2.1ρMLSS〔ρMLVSS/ρMLSS〕SVI304ρMLSS〔ρMLVSS/ρMLSS〕SVI30.ρMLSS4000mg/L0.5SVI3075mL/g30min.20dρMLSS6500mg/L.30SVI3057mL/g.20min60%ρMLSS..150dSVI3037～45mL/g.0297ρMLSS8000mg/L0.7530%.4ρMLSS〔ρMLVSS/ρMLSS〕SVI30Fig.4ChangesofρMLSSρMLVSS/ρMLSSandSVI30ofthesludgeintheSBRduringgranulationprocess2.2.22.51.0040g/cm3.60d.80d.15.160d1.0105g/cm3.16..56.8m/h38.5m/h5..5、Fig.5ChangesofspecificgravityandsettlingvelocityofsludgeintheSBRduringgranulationprocess2.2.345ρMLSSSVI30.ρMLSS8000mg/LSVI3037～45mL/g..2.3ρCODCrρNH4+-N.6ρCODCr20～55mg/L.〔1.2kg/m3·d〕〔0.5kg/m3·d〕2.4ρCODcr50mg/L.CODCr70%80%..17-1912923..6ρNH4+-N10mg/L5mg/L60%90%NH4+-N.①20-21..②22-23.6ρCODCrρNH4+-NFig.6ThemassconcentrationsofCODCrandNH4+-Nintheeffluentofthereactorduringgranulationprocess3a.SBR40160d.0.8mm.b..、ρMLSS6.8m/h1.0040g/cm34000mg/L38.5m/h1.0105g/cm38000mg/LSVI3075mL/g40mL/g.ρMLSSSVI30.c.SBR.ρCODCrρNH4+-N505mg/LCODCr70%80%NH4+-N60%90%.References1DEBRUINLMMDEKREUKMKVANDERROESTHFRetal.AerobicgranularsludgetechnologyalternativeforactivatedsludgetechnologyJ.WaterSciTechnol2004491-9.2.J.200518284-88.3ZHULXUXYLUOWGetal.Acomparativestudyontheformationandcharacterizationofaerobic4-chloroanilinedegradinggranulesinSBRandSABRJ.ApplMicrobiolBiotechnol200879867-874.4ARROJOBMOSQUERACORRALAGARRIDOJMetal.AerobicgranulationwithindustrialwastewaterinsequencingbatchreactorsJ.WaterRes2004383389-3399.5.J.2008212136-139.6ZHENGYMYUHQSHENGGP.PhysicalandchemicalcharacteristicsofgranularactivatedsludgefromasequencingbatchairliftreactorJ.ProcessBiochem200540645-650.7CHENYJIANGWJLIANGDTetal.StructureandstabilityofaerobicgranulescultivatedunderdifferentshearforceinsequencingbatchreactorsJ.ApplMicrobiolBiotechnol2007761199-1208.8MOYBYPTAYJHTOHSKetal.HighorganicloadinginfluencesthephysicalcharacteristicsofaerobicsludgegranulesJ.LettApplMicrobiol200234407-412.9LIUYTAYJH.StateoftheartofbiogranulationtechnologyforwastewatertreatmentJ.BiotechnolAdv200422533-563.10.M.4.2002.11IVANOVVWANGXHTAYSTLetal.BioaugmentationandenhancedformationofmicrobialgranulesusedinaerobicwastewatertreatmentJ.ApplMicrobiolBiotechnol200670374-381.12LIULLWANGZPYAOJetal.Investigationontheformationandkineticsofglucose-fedaerobicgranularsludgeJ.EnzymeandMicrobialTechnology200536712-716.13WANGFYANGFLZHANGXWetal.Effectsofcycletimeonpropertiesofaerobicgranulesinsequencingbatchairliftreac