常温处理生活污水微氧EGSB反应器启动运行特性董春娟

35220114JournalofNanjingUniversityofScienceandTechnologyVol．35No．2Ap[e-mail]。EGSB1221．0300092．150090EGSB、NP15～26℃EGSB9EGSBCOD、N、P。EGSBEGSB。15～26℃4。HRT3．9～4．8h2．5～3．1L/hCOD、NH3-N、TNTP213～86726．5～72．131．7～81．73．8～17．3mg/LEGSBCOD、NH3-N、TNTP93．4%83．8%74．7%44．0%2910．014．04．7mg/LIA、IB、IAⅢ6NTU。EGSB+15mV。11m/h。28g/L0．74～0．77EGSB。X7031005－9830201102－0284－05StartupandPerformanceofMicro-aerobicEGSBReactorTreatingActualDomesticWastewateratAmbientTemperatureDONGChun-juan1LIUXiao2LVBing-nan21．DepartmentofEnvironmentEngineeringTaiyuanUniversityTaiyuan030009China2．SchoolofMunicipalandEnvironmentEngineeringHarbinInstituteofTechnologyHarbin150090ChinaAbstractToobtaintherapidstartupandstableoperationofthemicro-aerobicexpandedgranularsludgebedEGSBreactorforsimultaneousremovalofcarbonandnutrientsNandPtreatingac-tualdomesticsewageunderambienttemperaturetheEGSBreactorisoperatedforapproximately9monthsconsistingofstartupstageandstableoperationstagefortheresearchontheformationofmi-cro-aerobicgranulesandthesimultaneousremovaloftheCODNandPatambienttemperature15DOI:10.14177/j.cnki.32-1397n.2011.02.007177EGSB～26℃．Bycontrollingtheoxygenationrateintheaerationcolumndifferentconcentrationsofdis-solvedO2aregeneratedinthecirculatingfluidwhichsuppliesdissolvedO2tothegranulesludgebedintheEGSBreactorandtogeneratemicro-aerobicenvironments．Theresultsshowthatittakesonlyaboutfourmonthsforthesuccessfulstartupofthemicro-aerobicEGSBforthetreatmentofactualdo-mesticsewageunderambienttemperature．About5months’stableoperationthemicro-aerobicEGSBreactortreatingactualdomesticsewageatambienttemperature15～26℃runswell．With213～86726．5～72．11．7～81．7and3．8～17．3mg/LinfluentCODNH3-NTNandTPconcentra-tionsgraduallyincreasinginfluentflowfrom2．5to3．1L/handshorteningHRTfrom3．9to4．8htheaverageremovalofCODNH3-NTNandTPcanattain93．4%83．8%74．7%and44．0%．AndtheeffluentCODNH3-NTNandTPconcentrationare2910．014．0and4．7mg/Lrespec-tivelywhichaccordswiththeIAIBIAandⅢdistinctionoftheGB18918－2002．Theeffluenttur-bidityisabout6NTU．Atthestableoperationstagetheredoxpotentialintheinletofthemicro-aero-bicEGSBreactorshouldbekeptatabout+15mV．Atthestableoperationstagethesettledvelocityofthegranulesdecreasesto11m/h．ButthegranulesarestillheldintheEGSBreactorwithoutanywashout．Moreoverthemicro-aerobicEGSBreactorcankeepthesludgeconcentrationabout28g/Landthemassratioofmixedliquorvolatilesuspendedsolidstomixedliquorsuspendedsolidsas0．74～0．77whichmeansthesuccessfulstartupandstableoperationforthemicro-aerobicEGSBreac-tor．Keywordsexpandedgranularsludgebedreactorsmicro-oxygenationambienttemperaturedomes-ticwastewaterremovalofnitrogenandphosphorusExpandedgranularsludgebedEGSBUp-flowanaerobicsuspendedbedUASB。。EGSB、N、PN、P1－3。Chemicalox-ygendemandCOD、A/O、A2/O、SequencingbatchreactoractivatedsludgeprocessSBR、、EGSB-MBR、EGSB-SBR。。。、、。4－6。N、P。—EGSBEGSBN、P7。。、、、、。58235215～26℃EGSBEGSB。11．1EGSB1。1EGSBEGSB2．3m18L1．8m10cm12L。EGSB。CO2MariotteCO2Mariotte。。EGSB2EGSBEGSBEGSBEGSB。ORP。1．22EGSBMLSS36．0g/LVSSTSS0．741．41gCODCH4/gCOD．d。1．3COD263～1145mg/LpH7．4～8．1NH3-N、TNTP26．5～72．1、31．7～89．13．8～17．7mg/L。1．4COD、NH3-N、TN、TP、MLSSMixedliq-uorvolqtilesuspendedsolidMLVSS8。ORPpHPHS-3C。9。1．5EGSBEGSB2。EGSB17～26℃2．5～3．2m/hHRT1．8～1．2L/h6．7～10h。26℃15℃2．2～2．9m/h2．5～3．1L/hHRT3．9～4．8h。22．1CODCODCOD2。2CODCOD2EGSBCOD76%682177EGSBCOD85%。187～96%92．5%16．5%。EGSBCOD。EGSB－129mV。、。+15mVEGSB93．4%CODCOD213～867mg/LCOD12～87mg/LCOD29mg/LGB18918－2002IA。6NTU。2．2NNH3-NTN34。3NH3-NNH3-N3NH3-N－66%。301%～9%NH3-N。NH3-N21．6～65．3mg/LNH3-N6052%12079%。+15mVNH3-N80%5NH3-N26．5～72．1mg/LNH3-N84%89%NH3-N4．4～12．1mg/L10．0mg/LGB18918－2002IB。4TNTN4TN－12%。NH3-NTN。22TN29%9046%12070%。+15mVTN74．7%83%TN31．7～81．7mg/LTN6．7～22．6mg/L14．0mg/LGB18918－2002IA。EGSBEGSB－－N、P。EGSBCOD、10。EGSBCODNH+4NO－211。NO－2NH+4EGSBNH3-N。2．3PEGSBTPTP5。5COD、NH3-NTNTP。TP－53%78235272%。90EGSBTP3%～79%。130EGSBTPTP36%。EGSB+15mVTP61%44%。TP3．8～17．3mg/LTP2．2～9．3mg/L4．7mg/LTPGB18918－2002Ⅲ。TP。5TPTP11m/h。MLSS28g/LMLVSSMLSS0．74～0．77EGSB。31EGSB15～26℃4。2EGSB15～26℃HRT3．9～4．8hCOD、NH3-N、TNTP213～86726．5～72．131．7～81．73．8～17．3mg/LHRTCOD、NH3-N、TNTP2910．014．04．7mg/LGB18918－2002IA、IB、IAⅢ。EGSB+15mV。3EGSB11m/hMLSS28g/LMLVSSMLSS0．74～0．77。1LiXMGuoLYangQetal．Removalofcarbonandnutrientsfromlowstrengthdomesticwastewaterbyex-pandedgranularsludgebed-zeolitebedfiltrationEGSB-ZBFintegratedtreatmentconceptJ．ProcessChem2007421173－1179．2ChuLBYangFLZhangXW．Anaerobictreatmentofdomesticwastewaterinamembrane-coupledexpand-edgranularsludgebedEGSBreactorundermoder-atetolowtemperatureJ．ProcessChem2005401063－1070．3．EGSB-SBRJ．200730568－71．4ChuLBZhangXWYangFLetal．Treatmentofdo-mesticwastewaterbyusingamicroaerobicmembranebioreactorJ．Desalination2006189181－189．5AhnYoung-HoChoiHoon-Chang．AutotrophicnitrogenremovalfromsludgedigesterliquidsinupflowsludgebedreactorwithexternalaerationJ．ProcessBiochemistry2006411945－1950．6PynaertKWyffelsSSprengersRetal．Oxygen-limit-ednitrogenremovalinalab-scalerotatingbiologicalcontactortreatinganammonium-richwastewaterJ．WaterSciTechnol20024510357－363．7ChuLBZhangXWLiXHeta