Wastewater Purification: Aerobic Granulation in Sequencing Batch Reactors - Chapter 4 ppt

... 2.15 49 Qin 200610 2 .4 aNAb115 McSwain et al. 20 04 20 1.89 0 .4 144 Qin 200675 0.7 1–1.3 50 Kim et al. 20 04 75 0.6 0. 1-0 .5 85 Kim et al. 20 04 aThe minimum settling velocities were obtained ... dischargepointwithinthegivensettlingtimeareretainedinthereactor;otherwise,theyaredischarged. This chapter aims to offer in- depth insights into the role of settling time in aerobic granulation in SBR. ... 0.262 0.187 1.9 04 Fe 0.3813 0.3261 0.3533 0 .48 26 1 .44 20 0.087Al 0.0 041 0.0053 0.0 049 NAc0 .44 40 NAcMicroelementd0. 044 6 0. 048 1 0. 040 8 0. 043 9 0.9038 NAcaActivated sludge.bAnaerobic granules...

... explanation without intent to infringe.Library of Congress Cataloging -in- Publication Data Wastewater purification : aerobic granulation in sequencing batch reactors / editor, Yu Liu.p. cm.Includes bibliographical ... Selection Pressure Theory for Aerobic Granulation in Sequencing Batch Reactors 85Yu Liu and Zhi-Wu Wang Chapter 7 Growth Kinetics of Aerobic Granules 111Qi-Shan Liu and Yu Liu Chapter 8 Diffusion of ... acid-free paper10 9 8 7 6 5 4 3 2 1International Standard Book Number-13: 97 8-1 -4 2 0 0-5 36 7-8 (Hardcover)This book contains information obtained from authentic and highly regarded sources. Reprinted...

... 206–215.Kwok,W.K.,Picioreanu,C.,Ong,S.L.,vanLoosdrecht,M.C.M.,Ng,W.J.,andHeijnen,J.J.1998 .In uenceofbiomassproductionanddetachmentforcesonbiolmstructuresinabiolm airlift suspension reactor.Biotechnol Bioeng 58: 40 0 40 7.Liu,Q.S.2003.Aerobicgranulationinsequencingbatchreactor.Ph.D.Thesis,NanyangTechnology University, Singapore.Liu,Y.andTay,J.H.2001a.Detachmentforcesandtheirinuenceonthestructureandmeta - bolic ... play an important role in theanaerobic granulation process. Thus, this chapter attempts to offer further insightsintotheroleofshearforceinaerobicgranulation.53671_C002.indd 25 10/29/07 7:02:15 ... 168–175.Tay,J.H.,Liu,Q.S.,andLiu,Y.20 04. Theeffectofupowairvelocityonthestructureofaerobicgranulescultivatedinasequencingbatchreactor.Water Sci Technol 49 : 35 40 .Trinet,F.,Heim,R.,Amar,D.,Chang,H.T.,andRittmann,B.E.1991.Studyofbiolmand uidization of bioparticles in a three-phase liquid-uidized-bed...

... 976–981.Lin,Y.M.,Liu,Y.,andTay,J.H.2003.Developmentandcharacteristicsofphosphorus-accumulating microbial granules in sequencing batch reactors. Appl Microbiol Biotechnol62: 43 0 43 5.Liu,Q.S.2003.Aerobicgranulationinsequencingbatchreactor.Ph.D.thesis,NanyangTechnological ... 285–293.Qin,L.,Liu,Y.,andTay,J.H.2004a.Selectionpressureisadrivingforceofaerobicgranula - tion in sequencing batch reactors. Process Biochem 39: 579–5 84. Qin,L.,Liu,Y.,andTay,J.H.2004b.Effectofsettlingtimeonaerobicgranulationin sequencing ... Parameters Contributing to Aerobic Granulation 876 .4. 1 Substrate Composition and Loading 886 .4. 2 Hydrodynamic Shear Force 886 .4. 3 Feast-Famine Regimen 896 .4. 4 Feeding Strategy 896 .4. 5 Dissolved...

... 11.10b).Theuorescenceintensityprolemeasuredalongthedirectionofthegranuleradiusfurthershowedthatmostcalcouorwhite-stainedPSwassituatedintheoutershellofthegranule,withadepthof400µmbelowthegranulesurface(gure11.11).Thesendingsimplythatthebeta-linkedPSarelocatedmainlyintheoutershellofthegranule.Infact,asimilardistributionofbeta-linkedPSwasalsoobservedinanaerobicgranules;themajorityofthecalcouorwhite-stainedPSwasfoundinthetop40μmfromthesurfaceoftheanaerobicgranule(deBeeretal.1996).Chen, ... Purificationearlier, the PS present in the granule core is basically biodegradable. In view of the total amount of PS determined in the aerobic granule, it appears that the alpha- or beta-linked PS may not be the dominate constitution of EPS in aerobic granules.EPS  ... FluorescenceviewedongranulecrosssectionbystainingwithConAforalpha-linkedPS(a);calcouorwhiteforbeta-linkedPS(b);andFITCforprotein(c).Scalebar:200μm.(FromChen,M.Y.,Lee,D.J.,andTay,J.H.2007.Appl Microbiol Biotechnol73: 146 3– 146 9.Withpermission.)53671_C011.indd...

... theboundEPS.Ascomparedtothesituationatthecoreoftheaerobicgranule,thehigherdensityofactivecellscanbeexpectedinthesurfacelayeroftheaerobicgranule(Tohetal.2003).ThisinturnpartiallyexplainswhyahighconcentrationoftheboundEPSwasdetectedontheshelloftheaerobicgranule (chapter1 1).Infact,Tohetal.(2003)investigatedtheviabilityofmicrooraresidinginsideaerobicgranulesusing in situ DNA uorescence staining, in which membrane permeable ... produced by aerobic granules.Appl Microbiol Biotechnol 74: 46 2 46 6.Wang,Z.,Liu,L.,Yao,J.,andCai,W.2006.Effectsofextracellularpolymericsubstanceson aerobic granulation in sequencing batch reactors. Chemosphere ... LLC chapter9 ).AsEPShasbeenbelievedtoplayanessentialroleinbuildingandmain-218 Wastewater Purificationthe cell-to-cell co-aggregation process. Similarly, Wang et al. (2006) also found thatthecellsurfacechargedroppedfrom0.86to0.74meqg–1SSafter14mgPNg–1SSwasbiodegraded,andaclosecorrelationbetweentheEPSbiodegradationandthereductionincellsurfacechargewasobserved.Furthermore,theEPSbiodegradationcauses...

... Technol 49 : 9–17.Inizan,M.,Freval,A.,Cigana,J.,andMeinhold,J.2005.Aerobicgranulationinasequencing batch reactor (SBR) for industrial wastewater treatment. Water Sci Technol 52: 335– 343 .Kwok,W.K.,Picioreanu,C.,Ong,S.L.,vanLoosdrecht,M.C.M.,Ng,W.J.,andHeijnen,J.J.1998 .In uenceofbiomassproductionanddetachmentforcesonbiolmstructuresinabiolmairliftsuspensionreactor.Biotechnol ... poly-C-hydroxybutyrate(PHB)orglycogen,mayhavesmallergrowthratesascomparedtothosegrowingoneasilybiodegradableorganicsubstrates(Cartaetal.2001).Forpromotingtheconversionofanexternalcarbonsourcetothestoragepoly - mers,alonganaerobic feedingperiodhasbeenoftenpracticedfollowedbyanaerobicreactionphase.ByimplementingsuchanoperationstrategyinanSBR,selectionofslow-growing P- or glycogen-accumulating ... 293thatcanhelptoimprovethestabilityofaerobicgranulesistoselectslow-growingnitrifying bacteria in aerobic granules by controlling the feed N/COD ratio.Amushroom-likestructurewasobservedinaerobicgranulescultivatedatthesub - strateN/CODratioof20/100(gure16.8a),andasimilarstructurewasalsoobservedingranulesdevelopedatthesubstrateN/CODratioof30/100.However,theaerobicgranules...

... Properties of Aerobic Granules 41 3 .4 Conclusions 49 References 49 3.1 INTRODUCTIONItappearsfromtheprecedingchaptersthatanumberofoperatingparametersofa sequencing batch reactor (SBR) can in uence aerobic ... Improving anaerobic sequencing batch reactor perfor - mance by modifying operational parameters.Water Res 36: 363–367.Tay, J. H., Yang, S. F., and Liu, Y. 2002. Hydraulic selection pressure-induced ... adhesion of cellsand play a crucial role in building and further maintaining structure integrity in acommunityofimmobilizedcells(seechapter10).Figure3.14displaystheeffectof cycle time on the...

... Sci Technol36: 141 – 148 .Qin,L.,Liu,Y.,andTay,J.H.20 04. Effectofsettlingtimeonaerobicgranulationinsequenc - ing batch reactor.Biochem Eng J 21: 47 –52.Schmidt, J. E. and Ahring, B. K. 1996. Granular ... Granular sludge formation in upow anaerobic sludgeblanket (UASB) reactors. Biotechnol Bioeng 49 : 229– 246 .Wang,Z W.2007.Insightsintothemechanismofaerobicgranulationinsequencingbatchreactor. Ph.D. ... 6.REFERENCESArrojo,B.,Mosquera-Corral,A.,Garrido,J.M.,andMendez,R.20 04. Aerobicgranulationwith industrial wastewater in sequencing batch reactors. Water Res 38: 3389–3399.Giokas, D. L., Daigger, G. T., von Sperling,...

... W.,Yang,S.F.,andTay,J.H.2005 .In uenceofsubstratesurface loading on the kinetic behaviour of aerobic granules. Appl Microbiol Biotechnol67: 48 4 48 8.Lubken,M.W.M.,Schwarzenbeck,N.,andWilderer,P.A.20 04. Sequencingbatchreactortechnologies. ... 41 7 42 7.Su,K.Z.andYu,H.Q.2005.Gasholdupandoxygentransferinanaerobicgranule-based sequencing batch reactor.Biochem Eng J 25: 201–207.Su,K.Z.andYu,H.Q.2006.Ageneralizedmodelforaerobicgranule-basedsequencing batch reactor. I. Model ... m–2,about40%oftheinputsubstrateisconsumedthroughthemaintenancemetabolism,whileonly10%ofinputsubstrategoesintothemaintenanceatthehighestsubstratesurfaceloading(24gCODm–2). In fact, theseareingoodagreementwiththePirtmaintenancetheory,statingthatmoresubstratewill...