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:2002-05-10:2002-06-06::(1972-),,,,EGSB,,(,100084):EGSB,(Vup),,;,Allen;,:EGSB;;;;:X703,S21614:A:1000-1166(2002)04-0003-05AStudyonCharacteristicsofAnaerobicGranularStudgeinanEGSBReactor/WANGYan2chun,ZUOJia2ne,XIAOJing2hua/(DepartmentofEnviromnentalScienceandEngineering,TsinghuaUniversity,Beijing100084,P.R.ChinaAbstract:Inthispaper,astudyonthecharacteristicsofanaerobicgranularsludgeinalab-scateEGSBreactortreatingsyntheticorganicwastewaterwasconducted.Theresultsshowedthat:alongwiththereactorpsoperationandthehydraulicup-flowvelocityincreased,thediameterofgranularsludgealsoincreased,andthediameterofthegranulesinthebottomofthesludgebedwerelargerthanthatintheupperpartofthesludgebed.Thesettlingvelocityofgranularsludgeincleanwaterwasproportionaltoitsdiameter,andthierrelationcouldbedescribedwithAllenequation.Observedunderthescanningelectronicmicroscopy,wefoundthatdifferentbacteriagrewanddistributedindifferentregionsonthesurfaceandintheinnerpartofagivengranularsludge.Keyword:EGSBreactor,anaerobicgranularsludge,granulardiameter,settlingvelocity,bacteriadistribution(EGSB),[15]UASB,EGSBEGSB,1111EGSB,351,8108L,4126L;2156m,2117m112,,CODNP20051,pH6187121133ChinaBiogas2002,20(4)UASB114(1)COD:TL21ACOD(2)pH:TPX290ipH;(3)(SS)(VSS):[6];(4):,114,1125,110,018,016,014012mm,,,,;(5):1L,,,t,V=H/t(V,H,t),2030,;(6):,:,,,,,2211EGSB,EGSB150d,32d[7],118d1,,,EGSB5178kgCODm-3d-120172kgCODm-3d-1,COD90%1EGSBCOD/mgL-1/Ld-1/kgCODm-3d-1HRT/hCOD/%3346d53208185178221290144771d5196111671431618921672101d499316161012611179318102150d62092710201727129117212EGSB,,,,,,,;56d,,;101d,,,,;122d,;150d,,,4ChinaBiogas2002,20(4),,,213,56d101d122d150d,2,4Vup0190mh-1,2103mh-1,3111mh-13145mh-12,56d018110mm;101d018110mm,56d,0181.0m,,0181.0mm;122d,1101.25mm;150d,114mm,,EGSB,,3150d3,,0181.0mm1.01.25mm,018mm,20%,1.4mm,3013%214,,,454,;,5,,,[8];=43gCDp-11d(1):;5ChinaBiogas2002,20(4)p,1;g;d;CDCDRe(Re=du),1Re1000,CD=10/Re,(1)(Allen):=4225(p-1)2g2113d(2),,p1.03gcm-3,11100gcm-3,g918ms-2,0101gcm-1s-1[9]4,,24,(2),,26,,,EGSB,,2/mm0130150170191112511325/mh-1131031916525149381034414353149/mh-1121462017729108371394617455105215150d,,6ChinaBiogas2002,20(4),(7a),(8),(8),(9)3EGSB,:(1),,;(2),Allen;(3):[1],,1(EGSB)[J]1,2000,18(4):381[2]Rebac,etal.High2rateanaerobictreatmentofmaltingwastewaterinapilot2scaleEGSBsystemunderpsy2chrophilicconditions[J]1J.Chem.Tech.Biotechnol.,1997,68:1351461[3]Nuneg,etal.Anaerobictreatmentofslaughterhousewastewaterinanexpandedgranularsludgebed(EGSB)re2actor[J].Wat.Sci.Tech.,1999,40(8):991061[4],,,1(EGSB)[J]1,2001,19(2):8111[5]Zoutberg,etal.ThebiobedEGSB(ExpandedGranularSludgeBed)systemcoversshortcomingoftheupflowanaero2bicsludgeblanketreactorinachemicalindustry[J].Wat.Sci.Tech,1997,35(10):1831881[6]1()[S]119971[7],,,1EGSB[J]1,2001,27(3):26301[8],1()[M]1:,19961[9],1[M]1:198917ChinaBiogas2002,20(4)