MBBR与AO法对污水中有机物及氮处理效果的研究徐云侠

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1 7环境工程学报Vol.1,No.720077ChineseJournalofEnvironmentalEngineeringJul.2007MBBRA/O徐云侠 张耀斌* 全 燮 赵雅芝(,116024)  (HRT)、CODCOD(MBBR)A/O。,MBBRA/O。CODNH3-N100025mg/L,HRT8h,MBBRCODTN92%94%,A/O78%82%。MBBR,。MBBRCODA/O,COD,TN。  A/O   X703.1   A   1673-9108(2007)07-0019-05ExperimentalstudyonthetreatmentoforganiccompoundsandnitrogeninwastewaterbyMBBRandA/OXuYunxia ZhangYaobin QuanXie ZhaoYazhi(SchoolofEnvironmentalBiologicalScienceTechnology,DalianUniversityofTechnology,Dalian116024)Abstract Theeffectsofhydraulicretentiontime(HRT)、CODconcentrationandCODvolumetricloadontheremovalofCODandnitrogeninaMBBR(movingbedbiofilmreactor)andA/Oprocessusingactivatedsludgemodewereinvestigated.TheresultsshowedthatMBBRwassuperiortoA/OprocessontheremovalofCODandnitrogen.UndertheconditionofinfluentCODandNH3-Nof1000mg/L、25mg/L,respectively,andHRTof8h,theremovalofCODandTNinMBBRreached92%and94%,respectively,andthoseinA/Oreached78%and82%,respectively.TheresultsshouldbeascribedthatthebiologicalactivityofMBBRwashigher,andsimultaneousnitrificationanddenitrification(SND)occurredinsidebiofilminMBBR.MBBRhadbetterresistanttoorganicshockloadsthanthatofA/O,butwhentheinfluentCODconcentrationwaslow,TNremovalratesinbothsystemswererelativelylow.Keywords movingbedbiofilmreactor;A/Oactivatedsludgeprocess;organicmatterremoval;nitrogenremoval:(705011):2006-11-06;:2007-05-25:(1980~),,,。E-mail:xyunxia@yahoo.com.cn*,E-mail:zhangyb@dlut.edu.cn  ,,85%,、,[1]。,A/O。,,、,。,,,,、。(movingbedbio-filmreactor,MBBR),,、,,,[2~5]。MBBRA/O1,,。1 1.1 MBBR1。,:10cm×10cm×20cm,。,,。1。1 Table1 Characteristicparametersofcarrierelements(mm)(%)(g/cm3)(m2/m3)(m2/m3)10,10,0.7,1840.96~0.996141100A/O2。,:10cm×10cm×20cm,、26242306mg/L,100%。。1 MBBRFig.1 FlowsheetofMBBRprocess2 A/OFig.2 FlowsheetofA/Oprocess1.2 ,、KH2PO4NH4ClCOD、NH3-NPO3-4-P,,NaHCO3pH6~9。1.3 COD:;NH3-N:;NO-3-N:;NO-2-N:N-(1-)-。1.4 ,22000mg/L。2,MBBR,A/O;,,COD90%,2。2 pH6~9,0.15m3/h,PO3-4-P10mg/L。A/OHRT,HRT。2.1 MBBRCOD1000mg/L,12h,,3。3 Fig.3 EffectoffillingproportionofcarrierelementsonCODremovalefficiency3,,COD。50%,COD93%,,。:,,,。,50%,,;60%,COD,,、。,50%。207:MBBRA/O2.2 2.2.1 水力停留时间(HRT)对有机物去除效果的影响COD1000mg/L,NH3-N25mg/L,HRT,COD。4。4 HRTCODFig.4 EffectofHRTonCODremovalefficiency4,HRT4h8h,MBBRCOD87%92%,A/OCOD65%78%。A/O24hMBBR10h。,MBBRCODA/O。:(1)A/O,,COD。,HRT,A/O。(2)MBBR,,,:MBBRMLVSS/MLSS58%,A/OMLVSS/MLSS42%。2.2.2 进水COD浓度对有机物去除效果的影响HRT10h,COD200~1000mg/LCOD5。5,(COD500mg/L),COD,COD,500mg/L95%92%。5 CODCODFig.5 EffectofinfluentCODconcentrationonCODremovalefficiency(COD500mg/L),,A/OMBBRCOD。MBBR。MBBR,。2.2.3 COD容积负荷对有机物去除效果影响的计算  ,45,COD,COD,2。2 CODTable2 EffectofCODvolumetricloadonCODremovalefficiency(kg/m3·d)654321MBBRCOD(%)87.088.088.791.594.297.2A/OCOD(%)65.569.472.378.289.393.32,COD1~3kg/m3·d,MBBRCOD90%。,COD。A/OCOD211,,,6kg/m3·d,COD65%。。,MBBRA/O。2.3 2.3.1 水力停留时间对氮去除效果的影响COD1000mg/L,NH3-N25mg/L。HRT,。6。6 HRTFig.6 EffectofHRTonconcentrationofeffluentnitrogen6,,NO-2-N。MBBRHRT4hNO-3-N,NO-3-N,。(SND)。A/OHRT10hNO3-N,HRT,。HRT,MBBRHRT8h1mg/L,A/O2.8mg/L。:MBBR,,,A/O,MBBR[6]。HRT,TN。MBBRA/O8hTN94%82%。,MBBRA/O。:MBBR,SND。A/O、2,SND,,TN。2.3.2 进水COD浓度对氮处理效果的影响NH3-N25mg/L,COD,。7。7 CODFig.7 EffectofinfluentCODconcentrationonconcentrationofeffluentnitrogen7,MBBRTNCOD,COD600mg/L95%。,COD。200~1000mg/L,97%。。NO-2-N;NO-3-NCOD,200mg/L,NO-3-N18.1mg/L,,NO-3-N,600mg/L1mg/L,。227:MBBRA/ONO-3-N。A/OTNCOD,COD600mg/L84%。NO-2-NCOD200mg/L。:MBBRNO-3-N,COD,,NO-3-N。COD,,NO-3-N。A/O,,。,,DO,,。,A/ONH3-NCOD(7),200~600mg/L,15.3mg/L3.5mg/L,。。,。,,,DO,[7]。pH6.5,DO2mg/L,。2.3.3 COD容积负荷对氮去除效果影响的计算67,COD,,3。3 CODTable3 EffectofCODvolumetricloadonnitrogenremovalefficiency(kg/m3·d)654321MBBRTN(%)72.682.391.293.696.496.4A/OTN(%)43.95262.878.991.495.43,,MBBRTN。COD1~4kg/m3·d,TN90%。A/OTN,,,COD5kg/m3·d,TN52%。,TN。,,MBBRCODA/O。3  MBBR,CODTNA/O(HRT8h92%94%),,MBBR。,MBBR[8,9],,MBBR。,MBBR,,。,,,。[1],..,1995,16(6):76~78[2],.、.,2003,29(4):13~15[3],..,2004,108(9):20~22[4]SuvilampiJ.,LehtomäkiA.,RintalaJ.Comparisonofla-boratory-scalethermophilicbiofilmandactivatedsludgeprocessesintegratedwithamesophilicactivatedsludgeprocess.BioresourceTechnology,2003,88(3):207~214[5]Comett-AmbrizI.,Gonzalez-MartinezS.,WildererP.ComparisonoftheperformanceofMBBRandSBRsystemsforthetreatmentofanaerobicreactorbiowasteeffluent.Water.Sci.Technol.,2003,47(12):155~161[6]RothmanM.Operationwithbiologicalnutrientremovalwithstablenitrificationandcontroloffilamentousgrowth.Wa-ter.Sci.Technol.,1998,37(4~5):549~554[7]HelmerC.Nitrogenlossinanitrifyingbiofilmsystem.Wa-ter.Sci.Technol.,1999,39(7):13~19[8]PastorelliG.,CanzianiR.,PedrazziL.,etal.Phosphor-usandnitrogenremovalinmoving-bedsequencingbatchbiofilmreactors.Water.Sci.Technol.,1997,35(6):169~176[9]HelnessH.,ΥdegaardH.Biologicalphosphorusandnitro-genremovalinasequencingbatchmovingbedbiofilmreac-tor.Water.Sci.Technol.,2001,43(1):233~24023

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