高强度好氧颗粒污泥的培养及特性研究

2008,28(4)360~364ChinaEnvironmentalScience1,2,1*,2(1.,230009;2.,230026)Ca2+,.4.3mmSVI19.2mL/g.CaCO3,20N/cm2,.,COD97.6%,,99.5%.Ca2+X703A10006923(2008)04036005Cultivationandcharacteristicsofthehighstrengthaerobicgranularsludge.LIULi1,RENTing-ting2,XUDe-qian1*,YUHan-qing2(1.DepartmentofCivilEngineering,HefeiUniversityofTechnology,Hefei230009,China2.LaboratoryofEnvironmentalEngineering,UniversityofScienceandTechnologyofChina,Hefei230009,China).ChinaEnvironmentalScience,2008,28(4)360~364AbstractStabilizedaerobicgranularsludgewascultivatedinasequencingbatchreactorbyincreasingtheCa2+concentrationoftheinfluent.Theaveragediameteroftheaerobicgranularsludgewas4.3mm,theSVIreached19.2mL/g.TheCaCO3crystalaggregatedinthecentreofthegranulewhichincreasedthestrengthofthegranule.Theaveragecompressivestrengthofthegranulereached20N/cm2.TheCODremovalefficiencyofthehighstrengthaetobicgranularsludgereached97.6%.Thestabilizedstructureofthehighstrengthgranuleprovidedafinemicroenvironmentfortheremovalofthenitrogenwiththenitrogenremovalefficiencyof99.5%.KeywordsAerobicgranularsludgeCa2+granularsludgestrength2090,.1991Shin[1]UASB.,[23][4],[5][6][7][8].,,,,,,[9].,,.[10].[1112].[1314],Ca2+.Ca2+.,SBR,,,.20070716*,,[e-mail]436111.1,.MLSS3~4g/L,SVI74.2mL/g,9.2m/h,1.007g/cm3.,(COD5000mg/L),(VFA)(mg/L):684±183;906±257;689±197;1012±205;427±111.5COD1000mg/L.(mg/L):COD1000;MgCl27;FeSO44.NH4ClKH2PO4;1mL/L,(mg/L):H3BO350;ZnCl250;CuCl230;MnSO4·H2O50;(NH4)6Mo7O24·4H2O50;AlCl350;CoCl2·6H2O50;NiCl250.NaHCO3pH7.0~7.2.1.2SBR,4.0L,7.0cm,110cm.6h,4min,330min,2min,4min,20min.50cm,50%.,2.2cm/s.,DO5mg/L.25.1.360d,COD/N/P100:5:1100:10:1,,[9].[2,5,7,9],0~20mg/L.[14],,,Ca2+40mg/L,(90d),Ca2+20mg/L.1.4CX31.,3,.(PowereachJC2000A,).[15].(DL84,),,.[16].MLSSMLVSSCODCa2+[17].22.1(a)20mm(b)3mm(c)5mm1Fig.1Imagesofsludgeshape(a)(b)30d(c)90d362281(b),30d,,1(c),90d,,,,.1,(MLVSS/MLSS)76%83%,,COD.,,155.6m/h,63.3°.1Table1CharacteristicsofthegranulesMLVSS/MLSS(%)SVI(mL/g)(mm)(g/cm3)(m/h)()8319.204.301.030155.663.37674.200.101.0067.035.02.22(A),,.Van[18].[17]2(A)abCa2+6.2%2.4%,Ca2+..,[2(B)],CO2.CaCO3[19].,:3222CHCOO2OH2CO2HO−+++→+(1)223COHOHHCO+−+↔+(2)233HCOHHCO−+−↔+(3)Ca2+,pH7.0Ca2+CO32CaCO3.(A)ab1mm(B)1mm2Fig.2DistributionofCainthegranularsludge(A);(B),Ca2+CaCO3,.,,.Ca2+[20].Ca2+,[13],.,Ca2+,Ca2+[21].,.Jiang[22],Ca2+100mg/L,Ca2+32d16d,,SVI(73±7)mL/g.2Ca2+.2,Ca2+,20N/cm3,.Ca2+4363,(),,.CaCO3,.2Ca2+Table2ComparisonofthecompressivestressoftheaerobicgranulecultivatedwithdifferentCa2+concentrationCa2+(mg/L)Ca(%)(N/cm2)404.720202.516101.9152.33(a),300min,COD27.0mg/L.,COD97.58%,.3(b).200min,NH4+N99.5%,330min,NH4+N.,NH4+NNO3NNO2N,,,.4.3mm,,,,,,/,(),,[23].,NH4N,.,,.040801201602002402803203600102030405002468(b)NOxN(mg/L)NH4+NNO3NNO2NNH4+N(mg/L)(min)020040060080010001200TN(mg/L)CODTNCOD(mg/L)010203040(a)0408012016020024028032036031CODFig.3ProfilesinaperformancecycleofCODandTN,NH4+N,NO3NandNO2N33.140mg/LCa2+,SBR,4.3mm,SVI19.2mL/g.3.2Ca2+以CaCO3的,;Ca2+,,20N/cm3.3.3,COD97.6%99.5%.,.[1]ShinHS,LimKH,ParkHS.Effectofshearstressongranulationinoxygenaerobicupflowsludgereactors[J].WaterScienceandTechnology,1992,26:601605.36428[2]BeunJJ,HeijnenJJ,vanLoosdrechtMCM.N-removalinagranularsludgesequencingbatchairliftreactor[J]BiotechnologyandBioengineering,2001,75:8292.[3].[J].,2002,18:2628.[4]deKreukK,HeijnenJJ,vanLoosdrechtMCM.SimultaneousCOD,nitrogen,andphosphateremovalbyaerobicgranularsludge[J].BiotechnologyandBioengineering,2005,90:761769.[5]SuKZ,YuHQ.Formationandcharacterizationofaerobicgranulesinasequencingbatchreactortreatingsoybean-processingwastewater[J].EnvironmentScienceandTechnology,2005,39:28182827.[6]ArrojoB,Mosquera-CorralA,GarridoJM.Aerobicgranulationwithindustrialwastewaterinsequencingbatchreactors[J].WaterResearch,2004,38:33893399.[7]ZhengYM,YuHQ,ShengGP.Physicalandchemicalcharacteristicsofgranularactivatedsludgefromasequencingbatchairliftreactor[J].ProcessBiochemistry,2005,40:645650.[8]JiangHL,TayJH,TaySTL.Aggregationofimmobilizedactivatedsludgecellsintoaerobicallygrownmicrobialgranulesfortheaerobicbiodegradationofphenol[J].LettersinAppliedMicrobiology,2002,35:439445.[9]LiuY,YangSF,TayJH.Improvedstabilityofaerobicgranulesbyselectingslow-growingnitrifyingbacteria[J].JournalofBiotechnology,2004,108:161169.[10]LiuQS,TayJH,LiuY.Substrateconcentration-independentaerobicgranulationinsequentialaerobicsludgeblanketreactor[J].EnvironmentTechnology,2003,24:12351243.[11]QuarmbyJ,ForsterCF.AnexaminationofthestructureofUASBgranules[J].WaterResearch,1995,29:24492454.[12]PereboomJHF.Strengthcharacterizationofmicrobialgranules[J].WaterScienceandTechnology,1991,36(6/7):141148.[13]YuHQ,TayJH,FangHP.TherolesofcalciuminsludgegranulationduringUASBreactorstart-up[J].WaterResearch,2001,35:10521060.[14]BatstoneDJ,LandelliJ,SaundersA,etal.Theinfluenceofcalciumongranularsludgeinafull-scaleUASBtreatingpapermillwastewater[J].WaterScienceandTechnology,2002,45:187193.[15]Duncan-HewittWC,PolicovaZ,ChengP,etal.Semi-automaticmeasurementofcontactanglesoncelllayersbyamodifiedaxissymmetricdropshapeanalysis[J].