城市污水培养好氧颗粒污泥及其降解特性刘绍根

1211221．2300222．2300263SBR。、3R1～R314、16141．0mmR1、R2R3R1、R2SVI29～40mL/g。。COD30mg/LNH+4－N＜1．0mg/L。X703C1000－4602201115－0095－042008ZX07010－005“”CultivationofAerobicGranularSludgeUsingMunicipalWastewaterandItsDegradationCharacteristicsLIUShao-gen12MEIZi-kun1RENYi-bo1XIEWen-ming2YUHan-qing21．SchoolofEnvironmentalandEnergyEngineeringAnhuiUniversityofArchitectureHefei230022China2．SchoolofChemistryandMaterialScienceUniversityofScienceandTechnologyofChinaHefei230026ChinaAbstractWithaerobicflocculentactivatedsludgeasseedsludgeaerobicgranularsludgewascultivatedusingalow-strengthmunicipalwastewaterinthreesequencingbatchreactorsSBRunderdif-ferentoperatingconditions．Thedegradationcharacteristicsofthegranularsludgewereinvestigated．Theresultsindicatethatthroughcontrollingshearforcesettlingtimeandotherparameterssmallgranulesareobservedinthe14th16thand14thdinthethreereactorsR1toR3respectively．Theaveragesizeofthematuregranulescanreach1．0mm．NosignificantdifferenceisobservedinthegranulesizeofR1andR2whilethatofR3isslightlylarger．Duringthestableoperationperiodalargenumberofprotozoaareobservedonthematuregranulessurface．ThesludgevolumetricindexSVIofthegranularsludgeinthethreeSBRsrangesfrom29mL/gto40mL/gandthegranulesshowgoodsettleability．Thematuregranu-larsludgehaslargeadsorptionanddegradationcapacityandisabletoachievesimultaneousnitrificationanddenitrification．TheeffluentCODandNH+4－Nconcentrationsareabout30mg/Landbelow1．0mg/Lrespectivelyindicatinghighcontaminantremovalefficiencyoftheaerobicgranularsludge．·59·271520118CHINAWATER＆WASTEWATERVol．27No．15Aug．2011Keywordsmunicipalwastewateraerobicgranularsludgedegradationcharacteristic、。、12。SBR。11.13SBRR1、R2、R317cm120cm4．6L。240min3min214～231min3～20min3min。R1、R2、R365%、50%、50%。1Fig．1Schematicdiagramofexperimentalapparatus1.2。COD100～200mg/LNH+4－N15～30mg/LpH6．5～7．5。R1、R2R3COD260～380mg/L。1.34300mg/LSVI98mL/g。1.4COD、NH+4－N、NO－2－N、NO－3－N、SVI、MLSSDOOLYNPUS－CX31。22.12.1.1。5d。314、1614。343d、、、。23。45、。R1、R20．7mmR31．0mmR1、R2。R1、R2R3。Liu5·69·2715．watergasheat．com。2.1.220min3MLSS4300mg/LSVI98mL/gMLSSSVI343minSVI29～40mL/g603000～3400mg/L。R1SVIR2、R3R3R1、R2。6SVI＞＞MLSSMLSS＞SVI＞。R1R2、R3SVIR2、R3。R3R1、R2MLSSR3。2.22.2.1NH+4－N、COD。3NH+4－N6～7mg/LNH+4－N＜1mg/LNH+4－NCOD30～55mg/LCOD2。Schwarzenbeck7。COD55mg/L30mg/L。2NH+4－NCODFig．2VariationofNH+4－NandCODwithoperatingtime2.2.2R1DO、OUR、COD、3。3DO、OURFig．3VariationofDOOURandpollutantsconcentrationsduringtypicalcycle·79·．watergasheat．com27153a45minCOD55mg/L。89。CODDO4．5mg/LOUR45minDO。3b120min95%NO－x－NNO－x－NNH+4－N。deKreuk1011DO。DODO912DO。3①3SBR、15d40d。②1．0mmR1、R2R3R1、R2。SVI98mL/g29～40mL/g。③COD30mg/L、NH+4－N＜1．0mg/L。DO。1．CSTRJ．200824510－13．2．SBRJ．200723999－102．3WangFYangFLZhangXWetal．EffectsofcycletimeonpropertiesofaerobicgranulesinsequencingbatchairliftreactorsJ．WorldJMicrobiolBiotechnol2005218/91379－1384．4LiuLLWangZPYaoJetal．Investigationonthefor-mationandkineticsofglucose-fedaerobicgranularsludgeJ．EnzymeMicrobTechnol2005365/6712－716．5LiuQSTayJHLiuY．Substrateconcentration-inde-pendentaerobicgranulationinsequentialaerobicsludgeblanketreactorJ．EnvironTechnol200324101235－1242．6．J．2007292115－118122．7SchwarzenbeckNErleyRMcSwainBSetal．Treat-mentofmaltingwastewaterinagranularsludgesequen-cingbatchreactorSBRJ．Actahydrochimhydrobi-ol200432116－24．8WangZPLiuLLYaoJetal．Effectsofextracellularpolymericsubstancesonaerobicgranulationinsequen-cingbatchreactorsJ．Chemosphere200663101728－1735．9．J．200218226－28．10deKreukMKHeijnenJJvanLoosdrechtMCM．SimultaneousCODnitrogenandphosphateremovalbyaerobicgranularsludgeJ．BiotechnolBioeng2005906761－769．11deKreukMKPicioreanuCHosseiniMetal．KineticmodelofagranularsludgeSBRinfluencesonnutrientremovalJ．Bi[e-mail]2011－01－11·89·2715．watergasheat．com