Multiscale structures of biological flocs

Chemical Engineering Science

Volumn 59, Issue 8-9, 2004, Pages 1875-1883

  Chu, C P ^a   Lee, D J ^a  

^a NATIONAL TAIWAN UNIVERSITY   (Taiwan)

Author keywords

CLSM; Floc model; Pore; Structure; Transport process

Indexed keywords

ACTIVATED SLUDGE PROCESS; FLOCCULATION; FLOW OF FLUIDS; FLUORESCENCE; FREEZING; MICROSCOPIC EXAMINATION; THAWING;

BIOLOGICAL FLOCS; CONFOCAL LASER SCANNING MICROSCOPE; PORE STRUCTURES;

CHEMICAL ENGINEERING;

FLOCCULANT;

EID: 2442479466     PISSN: 00092509     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ces.2004.01.040     Document Type: Article

References (45)

1. Avnir, D., 1989. The Fractal Approach to Heterogeneous Chemistry: Surfaces, Colloids, Polymers. Wiley, New York, USA, pp. 67-79.
2. Axford S.D.T. Herrington T.M. Determination of aggregate structures by combined light-scattering and rheological studies Journal of the Chemical Society-Faraday Transactions 90 1994 2085-2093
3. Bakti N.A.K. Dick R.I. A model for a nitrifying suspended-growth reactor incorporating interparticle diffusional limitation Water Research 26 1992 1681-1690
4. Baveye P. Boast C.W. Ogawa S. Parlange J.Y. Steenhuis T. Influence of image resolution and thresholding on the apparent mass fractal characteristics of preferential flow patterns in field soils Water Resources Research 34 11 1998 2783-2796
5. Chang I.L. Chu C.P. Lee D.J. Huang C. Effects of polymer dose on filtration followed by expression characteristics of clay slurries Journal of Colloid and Interface Science 185 1997 335-342
6. Chu, C.P., Lee, D.J., 2004a. Structural analysis of sludge floc. Advanced Powder Technology, in press.
7. Chu, C.P., Lee, D.J., 2004b. Bilevel thresholding of image of sludge flocs. Environmental Science and Technology 38 (4), 1161-1169.
8. Chung H.Y. Lee D.J. Porosity and floc structure of flocculated waste activated sludge floc Journal of Colloid and Interface Science 267 2003 136-143
9. Chung H.Y. Ju S.P. Lee D.J. Hydrodynamic drag force exerted on waste activated sludge floc Journal of Colloid and Interface Science 263 2003 498-505
10. Ganczarczyk J.J. Microbial aggregates in wastewater treatment Water Science and Technology 30 8 1994 87-95
11. Gorczyca B. Ganczarczyk J. Structure and porosity of alum coagulated flocs Water Pollution Research Journal of Canada 34 1999 653-666
12. Gorczyca B. Ganczarczyk J. Fractal analysis of pore distributions in alum coagulation and activated sludge flocs Water Pollution Research Journal of Canada 36 2001 687-700
13. Guan J. Implications of floc structure to solid-liquid separation processes in wastewater treatment. Ph.D. Thesis, School of Civil and Environmental Engineering 1999 University of New South Wales Sydney, Australia
14. Guan J. Waite T.D. Amal R. Rapid structure characterization of bacterial aggregates Environmental Science and Technology 32 1998 3735-3742
15. Hung W.T. Chang I.L. Lin W.W. Lee D.J. Unidirectional freezing of waste activated sludge: Effects of freezing speed Environmental Science and Technology 30 1996 2391-2396
16. Jiwani A. Graham N.J.D. Day M.C. Activated sludge process control via particle monitoring Water Science and Technology 36 4 1997 269-277
17. Jorand F. Zartarian F. Thomas F. Block J.C. Bottero J.Y. Villemin G. Urbain V. Manem J. Chemical and structural (2D) linkage between bacteria within activated sludge flocs Water Research 29 1995 1639-1647
18. Jung S.J. Amal R. Raper J.A. Use of small angle light scattering to study structure of flocs Particle and Particle Systems Characterization 12 6 1995 274-278
19. Keller J. Yuan Z. Blackall L.L. Integrating process engineering and microbiology tools to advance activated sludge wastewater treatment research and development Reviews in Environmental Science and Biotechnology 1 1 2002 83-87
20. Kyriakidis A.S. Yiantsios S.G. Karabelas A.J. A study of colloidal particle Brownian aggregation by light scattering techniques Journal of Colloid and Interface Science 195 1997 299-306
21. Lee D.J. Floc structure and bound water content in excess activated sludges Journal of Chinese Institute of Chemical Engineers 25 1994 201-207
22. Lee D.J. Reply to comment by L. Gmachowski Water Research 33 1999 1116
23. Lee D.J. Hsu Y.H. Fast freeze/thaw process on excess activated sludges: Floc structure and sludge dewaterability Environmental Science and Technology 28 1994 1444-1449
24. Lee D.J. Chen G.W. Liao Y.C. Hsieh C.C. On the free settling tests for estimating activated sludge floc density Water Research 30 1996 541-550
25. Li D.H. Ganczarczyk J.J. Fractal geometry of particle aggregates generated in water and wastewater treatment processes Environmental Science and Technology 23 11 1989 1385-1389
26. Li D.H. Ganczarczyk J.J. Structure of activated sludge flocs Biotechnology and Bioengineering 35 1990 57-65
27. Liss S.N. Droppo I.G. Flannigan D.T. Leppard G.G. Floc architecture in wastewater and natural riverine systems Environmental Science and Technology 30 1996 680-686
28. Mandelbrot B.B. The Fractal Geometry of Nature 1983 Freeman New York
29. Moudgil, B.M., Shah, B.D., 1986. Selection of flocculants for solid-liquid separation processes. In: H.S. Muralidhara (Ed.), Advances in Solid-Liquid Separation. Battelle Press, Columbus, Ohio, USA.
30. Nielsen P.H. Keiding K. Disintegration of activated sludge flocs in presence of sulfide Water Research 32 2 1998 313-320
31. Ormeci B. Vesilind P.A. Development of an improved synthetic sludge: A possible surrogate for studying activated sludge dewatering characteristics Water Research 34 2000 1069-1078
32. Sanin F.D. Vesilind P.A. Synthetic sludge: A physical/chemical model in understanding bioflocculation Water Environment Research 68 1996 927-933
33. Scuras S. Daigger G.T. Grady C.P.L. Jr. Modeling the activated sludge floc microenvironment Water Science and Technology 37 3 1998 243-250
34. Takács I. Fleit E. Modelling of the micromorphology of the activated sludge floc: Low DO, low F/M bulking Water Science and Technology 31 2 1995 235-243
35. Tambo N. Watanabe Y. Physical characteristics of floc-I. The floc density function and aluminum floc Water Research 13 1979 409-419
36. Thill A. Veerapaneni S. Simon B. Wiesner M. Bottero J.Y. Snidaro D. Determination of structure of aggregates by confocal scanning laser microscopy Journal of Colloid and Interface Science 204 1998 357-362
37. Tsou G.W. Wu R.M. Yen P.S. Lee D.J. Peng X.F. Advective flow and floc permeability Journal of Colloid and Interface Science 250 2002 400-408
38. Wu R.M. Lee D.J. Hydrodynamic drag force exerted on a moving floc and its implications to free settling test Water Research 32 1998 860-868
39. Wu R.M. Lee D.J. Hydrodynamic drag force exerted on a highly porous sphere moving towards an impermeable plate Chemical Engineering Science 53 1998 3571-3578
40. Wu R.M. Lee D.J. Highly porous sphere moving through centerline of circular tube filled with Newtonian fluid Chemical Engineering Science 54 1999 5717-5724
41. Wu R.M. Lee D.J. Hydrodynamic drag on non-spherical floc and free-settling test Water Research 35 2001 3226-3234
42. Wu R.M. Lee D.J. Waite T.D. Guan J. Multi-level structure of sludge flocs Journal of Colloid and Interface Science 252 2002 383-392
43. Zahid W.M. Ganczarczyk J.J. Fractal properties of the RBC biofilm structure Water Science and Technology 29 10-11 1994 271-279
44. Zartarian F. Mustin C. Bottero J.Y. Villemin G. Thomas F. Ailleres L. Chaampenois M. Grulois P. Manem J. Spatial arrangement of the component of activated sludge flocs Water Science and Technology 30 11 1994 243-250
45. Zartarian F. Mustin C. Villemin G. Ait-Ettager T. Thill A. Bottero J.Y. Mallet J.L. Snidaro D. Three-dimensional modeling of an activated sludge floc Langmuir 13 1997 35-40