好氧颗粒污泥膜生物反应器的运行特性朱振中

1,2,2,2＊(1.,　214036;2.,　214036):(MBR).:HRT6h,4～6mg·L-1,COD7.24kg·(m3·d)-1,COD96%.NH3-N0.17kg·(m3·d)-1,NH3-N60%.COD/N,MBRCODNH3-N.,MBR(MLSS)14～16mg·L-1.,MBR.,2()MBR,,MBRMBR,.:;;;:X703.1　:A　:0250-3301(2006)01-0057-06:2004-11-01;:2005-01-10:(2002DF000006):(1963～),,,,E-mail:[e-mail]＊CharacteristicsofAerobicGranularSludgeMembraneBioreactorforWastewaterTreatmentZHUZhen-zhong1,ZHOUYan2,LIXiu-fen2,CHENJian2(1.SchoolofChemicalandMaterialEngineering,SouthernYangtzeUniversity,Wuxi214036,China;2.KeyLaboratoryofInstrumentalBiotechnology,MinistryofEducation,SouthernYangtzeUniversity,Wuxi214036,China)Abstract:Characteristicsofaerobicgranularsludgemembranebioreactor(MBR)andthemembranefoulingwerestudiedwithsyntheticwastewater.ExperimentalresultsshowedthatCODremovalratecouldbereachedover96%undertheconditionsofHRT=6h,DO=4～6mg·L-1andthevolumetricloadofCOD=7.24kg·(m3·d)-1.WhenthevolumetricloadofNH3-Nwas0.17kg·(m3·d)-1,theremovalrateofNH3-Nwasabout60%.ThevariationsoftheCOD/NratiocouldnotaffecttheremovalofCODandNH3-N.Duringthestableoperationprocess,MLSSofthereactorwasashighas14～16mg·L-1,whichcouldconducesimultaneousnitrification-denitrification,astheanoxicandanaerobicmicroorganismsmightbeexistedinthecoreofgranularsludge.Inaddition,themembranefluxofMBRoftwodifferentconfigurationsofsludge,granularsludgeandfloccularsludge,wascompared.ThefluxreductionofgranularsludgeMBRwasmuchlowerthanthatoffloccularsludgeMBR.Moreover,themembranepermeabilityofthegranularsludgeMBRcouldberegainedsimplybybackwashingwithaerationorwashingthemembranewithwater.Keywords:aerobicgranularsludge;membranebioreactor;removalrate;membranefouling　　,、[1,2].(MBR)[3,4].MBR.[5,6],..,,(HRT)、COD、NH3-N.,MBRMBR,.MBR.1　1.1　1.7L,27120061　　　　　　ENVIRONMENTALSCIENCEVol.27,No.1Jan.,2006DOI:10.13227/j.hjkx.2006.01.011,,0.1μm,0.5m2.,,,;.、、.,10min,5min.1　Fig.1　Schematicdiagramofaerobicgranularsludgemembranebioreactor1.2　,1.1　/mg·L-1Table1　Compositionofsyntheticwastewater/mg·L-1144CaCl27.2NaHCO39.6MgSO4·7H2O9.6KH2PO45.6FeSO4·7H2O0.1335NH4Cl26.432MnSO4·H2O0.21.3　.,.,SV3014%～23%,.1.4　2,2.1(1～3)(HRT);2(4～6),COD/N.(4～6mg·L-1)、pH(6.8～7.8)(/=10min/5min).,.,(),..2　MBRTable2　OperationalparametersofaerobicgranularsludgeMBR123456HRT/h864666/d843.5232/mL·min-116.6722.233.322.222.222.2NH3-N/mg·L-150～5511035COD/N5018～201101.5　、COD、,,,MBRMLSSMLVSS.[7].2　2.1　HRTHRT,.MBR,,.MBRHRT.3(1、2、3),2.2.1.1　CODCOD1350～2350mg·L-1,2.2,HRT6h8h,58　　　　　　27　　2　HRTCODFig.2　EffectofHRTonCODremovalCOD8.4～89mg·L-1,66.62mg·L-1.COD96%,99%,.HRT4h,COD322.65mg·L-1,COD,80%.HRT4h、6h8h,COD120～499mg·L-1,345.18mg·L-1.CODCOD,.MBRCOD,,.,HRT6h,COD7.24kg·(m3·d)-1,COD96%.2.1.2　NH3-N38～68mg·L-1,3.3,HRT6h8h,NH3-N15.8～23.99mg·L-1,22.63mg·L-1.NH3-N45%～65%.HRT4h,NH3-N47.8mg·L-1,NH3-N,32%～40%.HRT4h、6h8h,NH3-N21～35mg·L-1,32.68mg·L-1.NH3-NNH3-N,MBRNH3-N,NH3-N.NH3-N,,,.3　HRTNH3-NFig.3　EffectofHRTonNH3-Nremoval　　,HRT6h,NH3-N0.17kg·(m3·d)-1,NH3-N60%.2.2　COD,NH3-N(COD/N),NH3-N,-.3(4、5、6),2.2.2.1　COD4.4,4COD98%;5,NH3-N(COD/N),COD591　　　　　　70%;6,NH3-N(COD/N),COD93%.(COD/N)COD.2.2.2　NH3-N5.5,4,NH3-N58%;5,NH3-N66%;6,NH3-N67%.,NH3-N(COD/N).4　COD/NCODFig.4　EffectofCOD/NratioonCODremoval5　COD/NNH3-NFig.5　EffectofCOD/NratioonNH3-Nremoval2.3　(MLVSS)(MLSS).MBR,MLVSS/MLSS6.6　Fig.6　VariationsofMLSS,MLVSSandMLVSS/MLSS6,MBR,.6d,10.4g·L-116.8g·L-1.7d,,7.18g·L-1.,,13g·L-1.MBR,F/M,,,,,.6,.,MLVSS/MLSS0.7～0.8..2.4　MBR.,2()MBR(7).7,MBR6d,.1d25.6mL·min-16d8.5mL·min-1.60　　　　　　2710d,16d4.5mL·min-1.MBR10d,1d25.6mL·min-110d22.5mL·min-1.3d,13d15.7mL·min-1.,16d14.2mL·min-1.7　MBRFig.7　VariationsofthefluxinMBRMBRMBR.MBR16d,,,.,90%.,92%.MBR16d,,,99.2%,.,MBRMBR,.3　　　MBR2:.MBR,,;,-,,.:、、、[8].,,,.,,,.,MBRCOD、.8,,.,,.:①8mg·L-1,.,.②,DO[9,10].(2～4mm),,,,.,DO4～6mg·L-1,,,60%.MBR,、.().MBR.:MBRMBR,..MBR,(),.4　(1),HRT6h,4～6mg·L-1,COD7.2kg·(m3·d)-1,COD96%.NH3-N0.17kg·(m3·d)-1,NH3-N60%.(2),(MLSS)14～16mg·L-1.,.(3)COD/NMBR611　　　　　　　　　　8　NO-3-NNO-2-NFig.8　EffluentvariationofNO-2-NandNO-3-NCODNH3-N.MBR.(4)MBRMBR,,MBR.:[1]　WangQ,DuaG,ChenJ.Aerobicgranularsludgecultivatedundertheselectivepressureasadrivingforce[J].ProcessBiochemistry,2004,39:557～563.[2]　,,.[J].,2002,21(3):317～321.[3]　YangSF,TayJH,LiuY.Anovelgranularsludgesequencingbatchreactorforremovaloforganicandnitrogenfromwastewater[J].J.ofBiotechnology,2003,106:77～86.[4]　CicekN,etal.Characterizationandcomparisonofamembranebioreactorandconventionalactivated-sludgesysteminthetreatmentofwastewatercontaininghighmolecularweightcompounds[J].Wat.Environ.Res.,1999,71(1):64～70.[5]　TayJH,LiuJL,SunDD.Quantificationofmembranefoulingusingthermogravimetricmethod[J].J.ofMem.Sci.,2003,217:17～28.[6]　LimAL,BaiRenbi.Membranefoulingandcleaninginmicrofiltrationofactivatedsludgewastewater[J].J.ofMem.Sci.,2003,216:279～290.[7]　.[M].(),:.1989.[8]　,,,.[J].,2003,30(4):88～91.[9]　,,,.SBR[J].,2004,24(3):355～359.[10]　,,.CODDO[J].,2004,10(3):366～369.62　　　　　　27