ABR耦合CSTR一体化工艺好氧颗粒污泥亚硝化性能调控及稳态研究巫恺澄

3611201511ENVIRONMENTALSCIENCEVol．36No．11Nov．2015ABRCSTR1212123*121231231．2150092．2150093．215009ABR．1hC/N10.40.89kg·m3·d－12.23kg·m3·d－1．45d、80%．FAFNA．．X703.1A0250-3301201511-4195-07DOI10．13227/j．hjkx．2015．11．0342015-05-182015-07-0212KJA610002B201305021990～[e-mail]*[e-mail]ndStabilityofNitritationGranularSludgeinIntegratedABR-CSTRReactorWUKai-cheng12WUPeng12SHENYao-liang123*LIYue-han12WANGJian-fang123XUYue-zhong1231．SchoolofEnvironmentalScienceandEngineeringSuzhouUniversityofScienceandTechnologySuzhou215009China2．JiangsuCollaborativeInnovationCenterofTechnologyandMaterialofWaterTreatmentSuzhou215009China3．JiangsuKeyLaboratoryofEnvironmentalScienceandEngineeringSuzhouUniversityofScienceandTechnologySuzhou215009ChinaAbstractThelasttwocompartmentsoftheAnaerobicBaffledReactorABRwerealteredintoaerationtankandsedimentationtankrespectivelytogetanintegratedanaerobic-aerobicreactorusinganaerobicgranularsludgeinanaerobiczoneandaerobicgranularsludgeinaerobiczoneasseedsludge．Theresearchexploredtheconditiontocultivatenitritationgranularsludgeundertheconditionofcontinuousflow．TheC/Nratewasdecreasedfrom1to0.4andtheammonianitrogenvolumetricloadingratewasincreasedfrom0.89kg·m3·d－1to2.23kg·m3·d－1whilethesettingtimeof1hwascontrolledintheaerobiczone．Afterthesystemwasoperatedfor45daysthematurenitritationgranularsludgeinaerobiczoneshowedacompactstructureandyellowcolorwhilethenitriteaccumulationratewasabout80%intheeffluent．TheassociatedinhibitionoffreeammoniaFAandfreenitrousacidFNAdominatedthenitritation．Partofgranulesloststabilityduringtheinitialperiodofoperationandflocsappearedintheaerobiczone．Howevertheflocsweretransformedintonewlygeneratedsmallparticlesinthefollowingreactoroperationdemonstratingthatorganiccarbonwasbenefittogranulationandtheenrichmentofslow-growingnitrifyingplayedanimportantroleinthestabilityofgranules．KeywordscontinuousflownitritationgranularsludgefreeammoniaFAfreenitrousacidFNAstabilitygranulationSHARON、-1～3．、、．4．、SBR56．78C/N93610．anaerobicbaffledreactorABR．ABRABR、C/NcontinuousstirredtankreactorCSTR．11.1ABRCSTR1641∶66.4L、1.45L0.9L．60L·h－12.6mm·s－1．30℃±1℃．∶1∶1pH1．1Fig．1Experimentalapparatusandprocessscheme1Table1Componentsofmixedsewage/mg·L－1/mg·L－1/mg·L－1COD750～850CaCl244.8CoCl2·6H2O0.12NH+4-N60～150MgSO449ZnSO4·7H2O0.12TP3～6FeCl3·6H2O1.5NaMoO4·2H2O0.06H3BO30.15CuSO4·5H2O0.03MnCl2·4H2O0.12KI0.03MLSS5.5g·L－1．15d．MLSS6.2g·L－1SVI40mL·g－1．11．pHPHSJ-4ApHDODOOLYMPUSCX41．1.21hCSTRC/N10.40.89kg·m3·d－12.23kg·m3·d－1ammoniaoxidizingbacteriaAOB．2．2ABR-CSTRTable2OperationalparametersinABR-CSTRcoupledreactor/dC/NCOD/mg·L－1/mg·L－1/kg·m3·d－1Ⅰ1～7160600.89Ⅱ8～190.6760901.34Ⅲ20～310.5601201.79Ⅳ32～450.4601502.23691411ABRCSTR22.1．COD90%COD60mg·L－1．NH+4-N．C/N12～15．C/N10.4．290%．Ⅰ40%．Ⅱ1.34kg·m3·d－13．120mg·L－11.79kg·m3·d－1Ⅲ70%．Ⅳ2.23kg·m3·d－180%90%．2Fig．2ProfileofNH+4-Nintheinfluent/effluentandremovalrateduringtheexperiment2.2AOB．NO－3-N20mg·L－1nitriteoxidizingbacteriaNOBAOB．．13、Fig．3ProfileofNO－3-NNO－2-Nintheeffluentandnitriteaccumulationrateduringtheexperiment30～35℃16．1730℃AOBNOB．30℃±1℃．2SRTSRT．MLSSⅣ20mg·L－1Ⅲ．SHARONSRT．3DOAOBNOBO2NOB18AOBNOB19．ⅣDO2.0mg·L－11.7mg·L－1．DO．4freeammoniaFAfreenitrousacidFNAFA6mg·L－1NOBFNANOBAOB0.02mg·L－10.4mg·L－120～22．23FA0.724mg·L－1NOBAOB．24FAFNANOBNO－2-N0.10mg·L－1≤FA≤8.77mg·L－10.069mg·L－1≤791436FNA≤0.249mg·L－1．FAFNAFAFNANOBAOB．0.89kg·m3·d－12.23kg·m3·d－1FAⅠ1.45mg·L－1Ⅳ2.64mg·L－180%4FA．FNA5．4FAFig．4ProfileofFAandnitriteaccumulationrateduringtheexperiment5FNA、Fig．5ProfileofFAnitrogenlossrateandnitriteaccumulationrateduringtheexperimentFNANOB．．Ⅰ31%Ⅳ18%5H+．pHFNANOBAOB25NOBFNAⅣ0.004mg·L－1FNANOB．IFAFNAFAFNANOB26．SHARON2728HRTSRT=HRTAOB0.32～0.52kg·m3·d－129．HRT1.6h1.78kg·m3·d－1．．2.32.3.1ABR-CSTR6a．ⅠSS180mg·L－17、6bⅠ840.6m·h－121.9m·h－1．ⅡSS60mg·L－1．ⅢSS．SS20mg·L－150m·h－1、6d＞1.6mm＜0.8mm9．．5．891411ABRCSTR6Fig．6Variationinmorphologyofgranulesduringcultivation7SSFig．7VariationsofMLSSineffluentzoneintheaerobiczoneduringtheexperiment8Fig．8Variationsofaveragesettlingvelocityofgranulesintheaerobiczoneduringtheexperiment2.3.2100L·h－1459Fig．9Comparisonofsizedistributionofsludgeintheaerobiczoneonday1andday45L·h－1．AOB10Fig．10VariationsoftheconcentrationoftheflocsandtheQualityratioofflocsludgeandgranularsludgeofthemixedliquorintheaerobiczoneduringtheexperiment0.75h1h1.88m3·m2·h－11.41m3·m2·h－1．Kishida30．．．10k．9914363%ⅡkⅣ0.2%．MLSS6200mg·L－1Ⅱ4200mg·L－131ABR92%COD60mg·L－1．．Ⅳ12mg·L－16500mg·L－1．32EPS．AOB．EPSEPSTsuneda33EPS．3435．31ABR-CSTR1hC/N10.50.89kg·m3·d－12.23kg·m3·d－1．45d80%．1.78kg·m3·d－1．2FAFNA、．3．1WanCLSunSPLeeDJetal．Partialnitrificationusingaerobicgranulesincontinuous-flowreactorrapidstartupJ．BioresourceTechnology2013142517-522．2．、J．201430111-48．3．J．200728112462-2466．4．A/OJ．2013291328-3137．5．J．2014342396-402．6．D．2013．7ShowKYLeeDJTayJH．AerobicgranulationadvancesandchallengesJ．AppliedBiochemistryandBiotechnology201216761622-1640．8JuangYCAdavSSLeeDJetal．Stableaerobicgranulesforcontinuous-flowreactorsPrecipitatingcalciumandironsaltsingranularinteriorsJ．BioresourceTechnology2010