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27320085ENVIRONMENTALCHEMISTRYVo.l27,No.3May20082007924.*:(2004BA604A01).**:ljy_1102@163com*龙腾锐李金印**龙向宇罗太忠唐然(,,,400045)(EPS),EPS6(G6PD).:21kHz,32W40W,3min.EPS,.,,,6.(extracellularpolymericsubstances,EPS),EPS[13].,.EPS,,,.111,15LSBR,SBR12h,,20min,10h,15h,10min.,CODNP10051.DO1060mgl-1;NaHCO3,pH7076;251;10min,1#1LSRT15d,2#5LSRT3d;MLSS20002200mgl-1.MLSS,SVICODCr,315d,SBR..12,3200rmin-1(1800g)20min,,1/3(3),.60ml,.6000rmin-1(4200g)30min,022m,EPS.13,;Folin,;DNA,2D.DNA.6(G6PD).VSS:100ml3000rmin-120min,105,600..3:311221EPS(21kHz,32W),1(SRT=15d,).1,EPS,,EPSEPS,15min,15.,.,EPSDNADNA,DNAEPS,DNA.EPSG6PD,G6PD,G6PD,,EPSG6PDEPSDNA.,.EPSG6PD,.,,EPS.22EPSEPS,21kHz,28kHz40kHzEPS(SRT=15d),2.2,40kHzEPS.21kHz28kHz,(32W),21kHzEPS28kHz;(48W),28kHzEPS21kHz.,28kHz.21kHz28kHz(3),28kHz21kHzEPS,G6PD,28kHz,EPS.EPS,21kHz,28kHz40kHz3,21kHzEPS.3,10min,28kHzEPSG6PD507molmin-1ml-1,G6PD312%;21kHzEPSG6PD136molmin-1ml-1,G6PD84%.,3min,28kHzEPSG6PD690molmin-1ml-1,G6PD43%;21kHzEPSG6PD28molmin-1ml-1,G6PD3122717%.,,3min.23EPS21kHzEPS(2min)4.4,(16W)EPS,16W32WEPS,32W40WEPS,40WEPS.32W40WEPS,EPSEPS.,(SRT=15d),(SRT=3d)EPS,.40W,SRT=15dEPS274mggVSS-1;SRT=3dEPS601mggVSS-1,SRT=15dEPS22.EPS,SRT=3d,EPS,,DNA;SRT=15d,EPS,,DNA.,;,(5),,.STR=3d,40W,EPSG6PD140molmin-1ml-1,G6PD(2385304molmin-1ml-1)59%;48W,EPSG6PD256molmin-1ml-1,G6PD108%.EPS,,EPS,32W40W(24mm).3:3133EPS,21kHz,3min,32W40W.,EPS.[1]BrittMarieWiln,BoJin,PaulLant,TheInfluenceofKeyChemicalConstituentsinActiveatedSludgeonSurfaceandFlocculateingPropertiesWaterReseach,2003,3721272139[2]BoJin,BrittMarieWiln,PaulLant,AComprehensiveInsightintoFlocCharacteristicsandTheirImpactonCompressibilityandSettleabilityofActiveatedSludgeChemicalEngineeringJournal,2003,95221234[3]BoJin,BrittMarieWiln,PaulLant,ImpactsofMorphologica,lPhysicalandChemicalPropertiesofSludgeFlocsonDewaterbilityofActivatedSludgeChemicalEngineeringJournal,2004,98115126EXTRACTINGEXTRACELLULARPOLYMERSUBSTANCESFROMTHEACTIVATEDSLUDGEUSINGULTRASONICLONGTengruiLIJinyinLONGXiangyuLUOTaizhongTANGRan(KeyEcoEnvironmentofLaboratoryofThreeGorgesReservoirRegionMinistryofEducation,ChongqingUniversity,Chongqing,400045,China)ABSTRACTExtractingextracellularpolymericsubstances(EPS)fromactivatedsludgebyultrasonicwasinvestigatedInthestudy,theactivationofglucose6phosphatedehydrogenase(G6PD)inEPSestimatedthelysisofthebacteriumTheresultsofthestudyincludesthebestfrequencyforextractingEPSwas21kHz,andthebestscopeofthepowerwasfrom32Wto40W,thesonictimewassuggestedlessthan3minTheEPSinlowSRTsludgewaseasytobeextacted,butthebacteriumpronetolysisbyultrasonicKeywords:EPS,ultrasonic,activatedsludge,G6PD.