Wastewater Purification: Aerobic Granulation in Sequencing Batch Reactors - Chapter 1 pptx

... mg 1 ) 0.00 0.05 0 .10 0 .15 0.20 0.25 0.30 0.35 Sour(NH 4 + ) and Sour (NO 2 – ) (mg O 2 g 1 SS h 1 ) 10 15 20 25 30 35 40 Sour(COD) (mg O 2 g 1 SS h 1 ) 90 10 0 11 0 12 0 13 0 14 0 15 0 16 0 FIGURE ... Selection Pressure Theory for Aerobic Granulation in Sequencing Batch Reactors 85 Yu Liu and Zhi-Wu Wang Chapter 7 Growth Kinetics of Aerobic Granules 1...

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... essential for producinghigh-qualityefuent. Superficial Air Velocity (cm s 1 ) 0.3 1. 2 2.4 3.6 Specific Gravity 1. 000 1. 002 1. 004 1. 006 1. 008 1. 010 SVI (mL g 1 ) 0 30 60 90 12 0 15 0 18 0 210 FIGURE 2.7 ... the biomass density of aerobic granular sludge increased linearly with shear force in asequencingbatchbiolterreactor,andaveryhighbiomassdensityof70to 110 g VSS L...

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... 285–293. Qin,L.,Liu,Y.,andTay,J.H.2004a.Selectionpressureisadrivingforceofaerobicgranula - tion in sequencing batch reactors. Process Biochem 39: 579–584. Qin,L.,Liu,Y.,andTay,J.H.2004b.Effectofsettlingtimeonaerobicgranulationin sequencing batch reactor. Biochem ... processed.NewYork:McGraw-Hill, 17 .1 17 . 31. MetcalfandEddy.2003. Wastewater engineering: Treatment and reu...

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... 12 .3 Biodegradation of 14 C-EPS into 14 CO 2 by marine bacteria. (Data from Decho,A.W.,Visscher,P.T.,andReid,R.P.2005.Palaeogeogr Palaeoclimatol Palaeoecol 219 : 71 86.) 536 71_ C 012 .indd 211 10 /2/07 ... EPS 212 12 .3 Biodegradation of Aerobic Granule-Associated EPS during Starvation 214 12 .4 EPS Biodegradation in an Aerobic Granular Sludge SBR 216 12 .5 Origin of Biodeg...

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... (hours) 0 5 10 15 20 25 Specific Gravity 1. 03 1. 04 1. 05 1. 06 1. 07 1. 08 Integrity Coefficient (%) 60 70 80 90 10 0 11 0 FIGURE 3 .10 Specic gravity (D)andintegritycoefcient($)ofsludgecultivatedin SBRsrunatdifferentcycletimes.(DatafromPan,S.etal.2004.Lett ... Properties of Aerobic Granules 41 3.4 Conclusions 49 References 49 3 .1 INTRODUCTION Itappearsfromtheprecedingchapters...

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... LLC 64 Wastewater Purification 10 minutes.Asshowninequation4.3,theminimumsettlingvelocity,(V s ) min can be estimated as 2.4 m h 1 forsettlingtimeof10minutesand12mh 1 for2minutes (McSwain et al. ... Heijnen 2002;McSwain,Irvine,andWilderer2004),whilethestudyforCODandnitrogen removalbyselectionofminimumsettlingvelocityofgranuleswasalsocarriedout (Kimetal.2004).Itisapparentthatthesettlingt...

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... 80 10 0 SVI (mL g 1 ) 20 40 60 80 10 0 (V s ) min (m h 1 ) 0.6 0.7 SVI (ml g 1 ) 40 50 60 70 80 90 80 Wastewater Purification 5 min 10 min 15 min 20 min FIGURE 5 .14 Morphologyofthesteady-statesludgecultivatedatdifferentdischargetimes; scalebar:3mm.(FromWang,Z ... Technol 36: 14 1 14 8. Qin,L.,Liu,Y.,andTay,J.H.2004.Effectofsettlingtimeonaerobicgranulationinsequenc - ing bat...

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... microbial fornutrientandcarbonremoval(seechapter1).Thegrowthofaerobicgranules 11 1 7 Growth Kinetics of Aerobic Granules Qi-Shan Liu and Yu Liu CONTENTS 7 .1 Introduction 11 1 7.2 A Simple Kinetic Model for the Growth of Aerobic ... surface loading-dependent(Trinetetal .19 91) .Infact,microbialsurfacegrowthrateandbio- degradationrateofaerobicgranulesarefairlyrelatedtothesubstratesurfac...

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... LLC ules(gure8 .11 ).Itcanbeseeningure8 .11 thatboththeoreticalandexperimental 13 8 Wastewater Purification Substituting equation 8 .11 into equation 8 .10 yields: NRM all xs x R m Y srdr  ° / 4 2 0 (8 .12 ) Afterdeformation,equation8 .12 becomes: N PR M P all x xs R Rm Y sr R dr  ° 4 3 4 43 2 3 0 / / (8 .13 ) in ... Concentration in an Aerobic Granules Reactor 14 3 8.5 Concl...

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... sludge. Figure9 .15 showschangesinthesludgevolumeindex(SVI)inthecourseofR1and R2operations.TheSVIinR2remainedataverylowlevelof60mLg 1 ,whilea sharpincreaseintheSVI,followedbyasignicantdecrease,wasobservedinR1.It isclearthatafteraerobicgranulationfromday10onwards,theSVIobservedinR1 decreasedsignicantly,indicatinganimprovedsludgesettleability. The ... attachment by facilitating and maintain...

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