MBBR处理城市生活废水的污染物降解动力学丁杰

1010Vol．10No．10201610ChineseJournalofEnvironmentalEngineeringOct．2016MBBＲ*150093movingbedbiofilmreac-torLawrence-McCarty、、。、、0.03～0.13、0.05～0.68、0.06～0.56。vmax=7.18d－1KS=84.67mg·L－1CODMBBＲ。X703.1A1673-9108201610-5359-07DOI10．12030/j．cjee．201602039KineticsofpollutantdegradationinMBBＲtreatingdomesticwastewaterDINGJie*GONGYuhanLIUXianshuSchoolofMunicipalandEnvironmentalEngineeringHarbinInstituteofTechnologyHarbin150093ChinaAbstractAnovelsuspendedcarrierdevelopedbyDalianArtronicsCorporationLtd．wasemployedinahighefficiencypilotmovingbedbiofilmreactorMBBＲtotreatmunicipalwastewater．Subsequentlythekinet-icsequationsforpollutantdegradationinthissystemwereestablishedaccordingtotheLawrence-McCartymodelwhichreflectstherelationshipbetweenthepollutantdegradationrateorremovalefficiencyandthemicrobialbio-massinthereactor．Thesimulatedeffluentvaluesoforganicmatterammonianitrogenandtotalnitrogenwereingoodagreementwiththemeasuredvalueswithabsoluteerrorsof0．03to0．130．05to0．68and0．06to0．56be-ingcalculatedrespectively．Inadditionthekineticconstantscalculatedusingtheorganicmatterdegradationequa-tionwerevmax=7．18d－1andKS=84．67mg·L－1caculatedbyCODwhicharesignificantlyhigherthantheref-erencevaluesforconventionalactivesludgeCASprocesskineticconstants．Thisconfirmsthatthepollutantdeg-radationrateandremovalefficiencyofthisMBBＲsystemaresuperiortothoseoftheactivatedsludgeprocess．Keywordsmovingbedbiofilmreactormunicipalwastewaterkineticsofpollutantdegradation2013ZX07201007NCET-11-07952016－02－152016－04－011972—、。[e-mail]*movingbedbiofilmreac-torMBBＲ、1-2、3-56。MBBＲCOD90%BOD595%。MBBＲ、、7-8MBＲ9。10、、11-12MBBＲ10、、。MBBＲ。MBBＲLawrence-McCartyMBBＲ、、MBBＲ。11.11.1.1、COD500mg·L－180mg·L－1C∶N∶P=100∶7∶11314pH6.8～7.8。1.1.231、2、3COD400、600、800mg·L－175～80mg·L－1TN80～90mg·L－1mC/mN≈1.88～3.75pH7.2～8.6。1.22L3∶1123cm60cm24L。1Fig.1Pilotmovingbedbiofilmreactor。12mm×13mm、650m2·m－3、0.93g·cm－3。5～7d23。90dMBBＲ。2Fig.2Carrierswithoutbiofilm3Fig.3Carrierswithmaturebiofilm1.31.3.11。1.3.215、16、IBＲAHIM171Table1AnalyticitemsandmethodsCODNH+4-NTNDOpHpHMLSS、MLVSS063510MBBＲMLSS、MLVSSmg·L－1。1.4MonodLawrence-McCarty18。Monodν=vmaxSKS+S1Smg·L－1KSmg·L－1。vmaxKS。。1vmaxKS。4。4X0MLVSSmg·L－1XeMLVSSmg·L－1XvMLVSSmg·L－1S0mg·L－1Semg·L－1。4MBBＲFig.4ModeldiagramofMBBＲdegradationkineticsXS0X0≈0Xe≈0X=XvTSe2vv=S0－SeXT221v=KSvmax·1Se+1vmax322.1MBBＲPLATTES19MBBＲBS=BSXDX·Ｒ4XBSmg·L－1BSXXmgD·L－1Ｒ%。Xv。X=2040%400·L－1。Xv≈510.84mg·L－1、、2～4。2～41/v-1/Se5～7。KSvmax5。2Table2MeasurementoforganicmatterdegradationkineticsconstantsT/dHＲT/hS0/mg·L－1Se/mg·L－1Xv/mg·L－11/Se1/v/d0.1674497.54247.12510.840.00400.340.256495.60177.83510.840.00560.400.3338499.46128.23510.840.00780.460.41710498.3892.10510.840.01090.520.512487.2566.14510.840.01510.613Table3MeasurementofammonianitrogendegradationkineticsconstantsT/dHＲT/hS0/mg·L－1Se/mg·L－1Xv/mg·L－11/Se1/v/d0.167486.4168.36510.840.01464.730.25688.3262.19510.840.01614.890.333888.2454.21510.840.01845.000.4171084.2543.46510.840.02305.220.51283.7237.44510.840.02675.521635104Table4MeasurementoftotalnitrogendegradationkineticsconstantsT/dHＲT/hS0/mg·L－1Se/mg·L－1Xv/mg·L－11/Se1/v/d0.167487.3471.54510.840.01405.400.25688.5965.05510.840.01545.430.333888.3157.82510.840.01735.580.4171085.6949.28510.840.02035.850.51284.1841.58510.840.02416.005Fig．5Ｒegressioncurveoforganicmatterdegradationkineticsconstants6Fig．6Ｒegressioncurveofammonianitrogendegradationkineticsconstants5、、Table5KineticscostantsoforganicmatterammonianitrogenandtotalnitrogenCODNH+4-NTNvmax/d－17.180.260.22KS/mg·L－184.6715.7314.36vmax、KS35、6、7、、7Fig．7Ｒegressioncurveoftotalnitrogendegradationkineticsconstants。CODXvTS0－Se=84.677.18·1Se+17.185NH+4-NXvTS0－Se=15.730.26·1Se+10.266TNXvTS0－Se=14.360.22·1Se+10.227COD20-216。MBBＲ。2020℃vmax=5.595d－1KS=75mg·L－123℃vmax=7.18d－1KS=84.67mg·L－1MBBＲ。MBBＲ、、263510MBBＲMBBＲ。6MBBＲTable6ＲeferencevalueofkineticsconstantsofCASandMBBＲvmax/d－12～105.0KS/mg·L－1BOD25～10060KS/mg·L－1BOD15～7040vmax/d－1≥5—MBBＲ22-23KS/mg·L－1BOD≥30—MBBＲ22-232.2MBBＲT=0.5dCOD86.43%55.28%TN50%。22MBBＲHＲTCODHＲT6～8h。8hT=0.33d、1.2～2.4g·L·d－187%COD、55%、50%5、6、7XvXv、、。=+5%～7%、Xv7。3108～11。7Table7Basicparametersandconditionsforkineticsequationvalidation/L/%Xv/mg·L－1COD/mg·L－1/mg·L－112439497.144008022443586.516008032450679.02800808CODFig．8MeaneffluentvalueandremovalefficiencyofCODineachreactor9Fig．9Meaneffluentvalueandremovalefficiencyofammonianitrogenineachreactor3COD、、SeSe8。10COD-SeCOD-Se0.03～0.13CODCOD-S0、XvTCOD-SeNH+4-N-SeTN-Se10.12、30.23～0.68、0.27～0.56NH+4-N-SeTN-Se。COD-S0mC/mN31～1011103635109、、SeTable9ComparisonofpollutanteffluentsimulationvalueandmeasuredvalueineachreactorCOD-SeNH+4-N-SeTN-Se/mg·L－1/mg·L－1/mg·L－1/mg·L－1/mg·L－1/mg·L－115250.70.0336380.054042.950.0627868.90.133629.250.234031.380.27310498.90.053622.010.684025.630.5610TNFig．10Meaneffluentvalueandremovalefficiencyoftotalnitrogenineachreactor1110XvFig．11QuantitychangeofXvineachreactorduring10operationperiods10.48%、12.42%12.43%。mC/mN、。3MBBＲCOD86%、60%～65%、COD。31Lawrence-McCartyMBBＲ5、6、7。CODvmax=7.18d－1KS=84.67mg·L－18。2MBBＲCOD400～800mg·L－1mC/mN1.88～3.758～10h。COD80%、60%497.