MBR污水处理工艺中活性污泥动力学参数测定薛涛

32420114ENVIRONMENTALSCIENCEVol.32No.4Apr.2011MBR121221*12121.1000842.-100084-membranebioreactorMBR.MBRYH=0.693、YA=0.263、KdH=0.108d－1、KdA=0.089d－1、CODvmS=1.94mg·mg·d－1、CODKS=34.6mg·L－1、vmN=0.18mg·mg·d－1、KN=1.06mg·L－1.CASYHKdHvmSvmN.MBR.-X703.1A0250-3301201104-1027-072010-04-192010-08-312008ZX07313-0048632009AA0629011977～[e-mail]*[e-mail]ParametersofActivatedSludgeinanMBRWastewaterTreatmentPlantXUETao12YUKai-chang12GUANJing2HUANGXia1WENXiang-hua1MIAOXue-na2CUIZhi-guang121.StateKeyJointLaboratoryofEnvironmentSimulationandPollutionControlDepartmentofEnvironmentalScienceandEngineeringTsinghuaUniversityBeijing100084China2.ResearchCenterofEnvironmentalMembraneTechnologyDepartmentofEnvironmentalScienceandEngineeringofTsinghuaUniversity-BeijingOriginWaterTechnologyCo.Ltd.Beijing100084ChinaAbstractOneofthemainproblemsinapplicationofMBRtechnologyislackofreliablekineticparametersforprocessdesign.TheactivatedsludgeintheaerobictankofanMBRmunicipalwastewatertreatmentplantwasinvestigatedtherefore.UsingoxygenutilizationratemethodfollowingkineticparametersweremeasuredheterotrophicyieldcoefficientYH=0.693autotrophicyieldcoefficientYA=0.263heterotrophicdecaycoefficientKdH=0.108d－1autotrophicyieldcoefficientKdA=0.089d－1specificmaximumCODremovalratevmS=1.94mg·mg·d－1halfsaturationconstantforCODremovalKS=34.6mg·L－1specificmaximumammoniaremovalratevmN=0.18mg·mg·d－1halfsaturationconstantforammoniaremovalKN=1.06mg·L－1.ComparedwiththenormalreporteddataofconventionalactivatedsludgeprocessCASYHKdHobtainedarehigherandvmSvmNarelower.ThehighsludgeconcentrationconditionofMBRprocessmayaccountforthosedifferences.KeywordsmembranebioreactorMBRwastewaterkineticparameteractivatedsludgeoxygenutilizationrateY、Kd、vmaxKS.conventionalactivatedsludgeprocessCAS12.-membranebioreactorMBR3～8910MBR.MBRCASMBR.MBRCODMBR.11.1MBR3.5m3·d－1F/MBOD5/VSSDOI:10.13227/j.hjkx.2011.04.027320.05～0.17d－1---A2/O-MBR.COD.HRT20hSRT30d20～26℃MLSS4～6g·L－1COD100～300mg·L－1.2mm32mm.1.21.DO6mg·L－1DO.MLVSS.22±1℃.1.2.3.4.5.6.7.8.1Fig.1Schematicdiagramofoxygenutilizationratemeasuringsystem1.3YHYA1112KdHKdA12～15CODvmS、CODKS、vmNKN11..1YHYAYHATU10mg·L－1162h.1.2DOminCODΔSDO2.ΔSCOD=ΔO+ΔXCODYH=ΔX/ΔS=1－ΔO/ΔS1DOΔO1YHCODVSSCOD.2YHDOFig.2SketchmapofDOcurveinYHdeterminationCODCODCODCODCODCOD.YA2h1.2DOminΔN5mg·mL－1YHDO.4.57ΔN=ΔO+ΔXCODYA=ΔX/ΔN=4.57－ΔO/ΔN2DOΔO2YA.2KdHKdAdX/dt=－KdXX=X0e－Kdtvo=—dDO/dt=fvcKdX=fvcKdX0e－Kdt33vomg·L·d－1fvcVSS82014MBR1.42Kdd－1XVSSmg·L－1X0VSSmg·L－1.3lnvo=lnfvcKdX0－Kdt4lnvotKd.7dvo1340mg·L－1vo2.VSSvo2vo2=vo2×VSS/VSS1d、3d5dATU20mg·L－113vo2ATU.lnvo1tKdHlnvo2－vo1tKdAd－1.3vmS、KS、vmNKNMonodv=vm·S/KS+S1/v=KS/vm·1/S+1/vmv=dS/dtX=－dDO/dtΔO/Δ[]SX=OUR/ΔO/ΔS55SCODmg·L－1OURSVSSmg·mg·d－1XVSSmg·L－1CODΔO/ΔS=1－YHΔO/ΔS=4.57－YA.SOURv1/v、1/SvmS、KS、vmNKN.v-SSv=vm·S/KS+S2.COD、KN1mg·L－12.0.3～0.7mg·L－1.1.4COD2-VSS550℃17.DO5-Star510M-010801010MDOrionStarPlusNavigator212.0.22.1YHYAYHYA51YHYA34.3DO-YHFig.3DOcurve-YHdetermination4DO-YAFig.4DOcurve-YAdetermination2“”3COD..43“”.92013251.1YHYATable1ResultsofYHandYA12345YH0.6990.6910.7010.7280.6470.693YA0.2580.2720.2300.2720.2830.2632.2KdHKdAlnvo1、lnvo2－vo15KdH=0.108d－1KdA=0.089d－1.5KdHKdAFig.5DeterminationofKdHandKdA6CODDOFig.6DOcurvesunderdifferentCODconcentration2.3vmS、KS、vmNKNCOD6SCOD.6k2.1YHv7vmS=1.94mg·mg·d－1KS=34.6mg·L－1.8vmN=0.18mg·mg·d－1KN=1.06mg·L－1.7vmSKSFig.7DeterminationofvmSandKS8vmNKNFig.8DeterminationofvmNandKN2.1～2.32.2.4MBRCASMBRCAS23.2CAS3.CASMBRYHKdHvmSvmNYA、KdA、KSKN.MBRCAS2～4MBRF/MCASMBR03014MBR2Table2Summaryofkineticparametersinliterature/℃YHMBRCAS0.693A2/O-MBR22±10.801MBR3090.40～0.541MBR9～2130.72±0.05MBR2350.4091MBR—60.441AO—180.46～0.69CAS2010.443～0.49016～30190.36～0.571CAS2020.65±0.0472012YAMBRCAS0.263A2/O-MBR22±10.25±0.01MBR2350.3491AO—180.07～0.28CAS201KdH/d－1MBRCAS0.108A2/O-MBR22±10.08MBR3090.05～0.32MBR2030.081MBR2350.023MBR—60.048MBR26±180.018AO—180.056～0.0776～30190.04～0.075CAS2020.0420±1200.08～0.11AO18±215KdA/d－1MBRCAS0.089A2/O-MBR22±10.080MBR2350.007AO—180.07～0.09220140.1120±1200.021—21vmS/mg·mg·d－1MBRCAS1.94A2/O-MBR22±12.73～6.476～30192～10CAS202vmN/mg·mg·d－1MBR0.18A2/O-MBR22±1CAS1.15—21KS/mg·L－1MBRCAS34.6A2/O-MBR22±1192MBR26±1810～180CAS20176.5～88.46～30192.5～4.0、SBR13～222215～70CAS202KN/mg·L－1MBRCAS1.06A2/O-MBR22±10.85MBR30±0.140.10～0.15MBR15±0.2100.24～0.32MBR—70.6～3.6CAS2015.14—210.07～0.20CAS15±0.2100.11～0.19CAS—71VSSCODVSS=1.42·VSSCOD2KdA·fvcfvc=1.42KdA1301323MBRCASTable3ComparisonofkineticparametersofMBRandCASsludgeYHYAKdH/d－1KdA/d－1vmS/mg·mg·d－1vmN/mg·mg·d－1KS/mg·L－1KN/mg·L－10.6930.2630.1080.0891.940.1834.61.06CAS0.36～0.690.07～0.3490.018～0.110.07～0.112～101.152.5～1800.07～5.14KdH.YH.vmSvmNVSSMBR.MBRCAS.YH0YHKdHYH0=YH/1+KdH·X/dX/dt6YH0=YH/1+KdH·SRT7SRT30dYH0-M=0.693/1+0.108·30=0.163SRT=30dCASYH=0.5KdH=0.06YH0-C=0.5/1+0.06·30=0.179MBRYH0-MCASYH0-CMBRCAS.MBRYHKdHCASYH0-MYH0-CKdH.MBRCASMBRCAS.MBRMBR.31A2/O-MBRYH=0.693、YA=0.263、KdH=0.108d－1、KdA=0.089d－1、vmS=1.94mg·mg·d－1、KS=34.6mg·L－1、vmN=0.18mg·mg·d－1、KN=1.06mg·L－1.2CASMBRYHKdHYH0、CODvmSvmN.MBR.MBRCAS.1HenzeMGradyJCPLG