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77Vol.7,No.720067TechniquesandEquipmentforEnvironmentalPollutionControlJul.2006李方陈季华奚旦立邓春华李燕(,200051)(CDMBR)180d,,,COD100mg/L,50mg/L,COD50%,(SMP),,F/MSMP,,TQ0288A10089241(2006)07004706StudyonsludgeactivityincrossflowdynamicmembranebioreactorLiFangChenJihuaXiDanliDengChunhuaLiYan(CollegeofEnvironmentalScienceandEngineering,DonghuaUniversity,Shanghai200051)AbstractThequalitiesoffilterliguorandsupernatantwerecharacterizedinthisstudyoncrossflowmembranebioreactor(CMBR)throughouta180daysperiod.TheresultsshowedthattheCODconcentrationofsupernatantkeptbelow100mg/Lwhilethatoffilterliguorbelow100mg/L.TheefficiencyofCODremovalbythemembranewasupto50%.Buttherewasalmostnocontributiontonitrogenremova.lSolublemicrobialproducts(SMP)werefoundtobeaccumulatedinthereactoranddegradableafterbeingrejectedlongenough.Theoxygenuptakeratewhichwasmeasuredbyusinginhibitorsillustratedthattheactivityoftheheterotrophicorganisms,includingNitrosomonasgroup,NitrobactergroupandNitrobactergroup,wereinhibitedbecauseofthedecreaseofF/MandtheaccumulationofSMP.ButitdidnotinfluencetheCODremovalefficiency.Keywordscrossflow;dynamicmembrane;sludgeactivity;nitrificationbacterial:(012312032):2005-04-15;:2005-07-17:(1979~),,,Emai:llifang@mai.ldhu.edu.cn,(),,,,MBR(crossflowmembranereactor,CMBR)CMBR,,,,[1];,SMP,,,(solublemicrobialproducts,SMP)[2~4],,[5]MBR,,,,711.1(CDMBR)A/O,1(C6H11NO)COD1000mg/L,B/C0.5,,,C/N,[6,7]1L1g15mgKH2PO4:COD2000mg/L,BOD1600mg/L,TN110mg/L,TP20mg/L(),(HL5)()(JY7142)8L20L()(HL5)1Fig1Diagramoftheexperimentalsystem,,10dCMBR,2,1~45d1,MBR,,66h33h,0.3gCOD/gMLSS!d,245~180d,33h,30dDO3~4mg/L,,(JB50D),6Al2O3,913mm,40cm,∀36%,1~3m6000,2m,0.3g/L(),0.2MP,0.5m/s10min[8]1.2,CODTNNO-3NNH+4N[9],MLSSMLVSSTOCTOCV,(oxygenuptakerate,OUR)(specificoxygenuptakerate,SOUR)[10][11],NaClO3ATU22Fig.2Diagramofbatchrespirometerusedforrecordingoxygenuptakerate487:22.13(a),,COD100mg/L,50mg/L,100d20mg/L,MLSSMLVSS3(b),,32580mg/L1512mg/L,,2,,,,,;,,ChooCMBR[12,13]10d,,45d,,120d,9000mg/LY=SS/COD,Y,SS,CODCOD0.14gSS/gCOD!d,,VSS/SS,85%~90%3CMBR(a)COD;(b)MLSSMLVSS;(c)TN;(d)NH+4N,NO-3N,NO-2NFig.3TreatingefficiencyofCMBR3(c)(d)3(c),TN,80%,TN20mg/LTN,3(d),NH+4N1~3mg/L,NO-2N1.0mg/L,NO-3N497,A,,ACOD180~220mg/L,,2.2TOCSMPMBR,,TOC[15]SMP,MBR,4,TOC,35d,60mg/L,TOC,2m,,0.4m,,,,,SMP,TOCShin[14]HuangXia[15]MBRSMP,,SMP4TOCFig.4VariationofTOCofsupernatantandfilterliquor5,72%10000,76d,,5000036%,135d10000~50000,48%,50000,24.7%,[16]5Fig.5TOCpercentageprofilesoforganicsubstanceswithdifferentMWinsupernatant2.3OUR6OURSOUR,OUR,SOUR,1~5d,OURSOUR,,,,,OUR,SOUR7SOURMLSS,SOUR12d,MLSS2821mg/L,SOUR3.4mgO2/gSS!h,39d,MLSS7220mg/L,SOUR1.3mgO2/gSS!h:SOUR=3.927exp(-1.487MLSS)(1),,,###[17]HRT,(F/M),SOURHasarMBR,SOUR10;Brockma[1]MBR,507:5.2mgO2/gSS!hSOURSOUR:,MBR,;,,0.3gCOD/gMLSS!d6OURSOURFig.6VariationofOURandSOURovertheexperiment7SOURMLSSFig.7RelationshipbetweenSOURandMLSS8NH+4NO-2,SOUR,50d,,84,SMP,TOC,NH+4NO-2,50dNH+4NO-2,0.110.24mgO2/gSS!hSMP,,,,,2.4MBR,8Fig.8Variationofoxidationratesofheterotrophicsubstrate,NO-2N,NH+4N,10L/m2!h,,95d115d,0.05MP,,9,0.51.01.5m/s3,89136232h,,Schiener[18],,,,9Fig.9Effectofcrossflowrateonfluxdeceaserate61d94d,,,5,1,,,,5171Table1Fluxdecreaseunderdifferenttransmembranepressures(MP)(h)(m/s)MLSS(mg/L)0.2891.563240.11281.562210.0752191.564830.052781.565430.1561.567160.05991.56577,,0.10.05MP,56h99h2,,,[19];,,,3180d,MBR,80%,,SMP,,,,SOUR,F/MSMP,,CMBR,MBR,,,,,[1]BrockmaM.,SeyfriedC.F.SludgeactivityandcrossflowmicrofiltrationAnonbeneficialrelationship.Wat.Sc.iTech.,1996,9:205~213[2]ChudobaJ.Inhibitoryeffectofrefractoryorganiccompoundsproducedbyactivatedsludgemicroorganismsonmicrobialactivityandocculation.Wa.tRes.,1985,19:197~200[3]RappaportS.M.,RichardM.G.,HollsteinM.C.,eta.lMutagenicactivityinorganicwastewaterconcentration.Environ.Sc.iTech.,1979,13:957~961[4]RossN.,DeschenesL.,BureauJ.,eta.lEcotoxicologicalassessmentandeffectsofphysicochemicalfactorsonbiofilmdevelopmentingroundwaterconditions.Environ.Sc.iTechno.l,1999,32:1105~1111[5]KimJ.S.,LeeC.H.,ChangI.S.Effectofpumpshearontheperformanceofacrossflowmembranebioreactor.Wat.Res.,2001,35:2137~2144[6].A/O.,2002,24(2):18~21[7].A/O.,2003,34(2):50~53[8],,,.:.,2005,31(12):59~62[9]..:,1989[10]NowakO.,SvardalK.Observationonthekineticsofnitrificationunderinhibitingconditionscausedbyindustrialwastewatercompound.Wa.tSc.iTech.,1998,28:115~123[11]JoannaS.G.,KrisstG.,eta.lNitrificationmonitoringinactivatedsludgebyoxygenuptakerate(OUR)measurements.Wat.Res.,1996,30:1228~1236[12]ChooK.H.,LeeC.H.Hydrodynamicbehaviorofanaerobicbiosolidsduringcrossflowfiltrationinthemembraneanaerobicbioreactor.Wa.tRes.,1998,32(11):3387~3397[13]ChooK.H.andLeeC.H.Membranefoulingmechanismsinthemembranecoupledanaerobicbioreactor.Wat.Res.,1996,30:1771~1780[14]ShinH.S.,KangS.T.Characteristicandfatesofsolublemicrobialproductsinceramicmembranebioreactoratvarioussludgeretentiontmies.Wa.tRes.,2003,37:121~127[15]HuangXia,LiuRu,iYiQian.Behaviousofsolublemicroductsinmembranebioreactor.Proc.Biochem.i,2000,36:401~406[16]DuncanJ.B.,DavidC.Stckey.Areviewofsolublemicrobialproduct(SMP)inwa