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Linking floc structure and settling properties to activated sludge population dynamics in an SBR

Ruxandra Govoreanu, D Seghers, Ingmar Nopens UGent, B De Clercq, Hans Saveyn UGent, C Capalozza, Paul Van Der Meeren UGent, Willy Verstraete UGent, Eva M Top and Peter A Vanrolleghem (2003) WATER SCIENCE AND TECHNOLOGY. 47(12). p.9-18
abstract
Over a period of 227 days properties of activated sludge grown in an aequencing batch reactor (SBR) operated under stable conditions were analyzed. Settling properties (sludge volume index (SVI)) of the activated sludge were compared with on-line measurements of floc size and size distribution obtained by using a laser light scattering technique (Malvern Mastersizer/S, Malvern, UK), and with measurements of microbial community dynamics analyzed by denaturing gradient gel electrophoresis (DGGE) patterns of 16S rRNA genes. In addition, microscopical observations were used to confirm the results. Three distinct stages in the SBR evolution were observed. In the first stage the structural floc properties showed predominant presence of floc-forming bacteria in the activated sludge. A good correlation between floc size, settling properties and microbial community evolution was observed. The second stage showed a good balance between floc-forming and filamentous bacteria, with good settling properties and a highly dynamic community in the SBR. In the third stage, an increase in the filamentous bacteria, which became predominant in the system was observed. Again, a good correlation between settling properties and floc size distribution was obtained and a new dominant species was observed in the DGGE patterns, which can be assumed to be a filamentous organism.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (proceedingsPaper)
publication status
published
subject
keyword
sequencing batch reactor, IMAGE-ANALYSIS, population dynamics, SIZE DISTRIBUTION, floc size distribution, sludge volume index, SETTLEABILITY, DGGE
journal title
WATER SCIENCE AND TECHNOLOGY
Water Sci. Technol.
volume
47
issue
12
pages
9-18 pages
conference name
3rd World Water Congress of the International-Water-Association
conference location
Melbourne, Australia
conference start
2002-04-07
conference end
2002-04-12
Web of Science type
Article
Web of Science id
000184651000002
JCR category
WATER RESOURCES
JCR impact factor
0.71 (2003)
JCR rank
25/55 (2003)
JCR quartile
2 (2003)
ISSN
0273-1223
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
211189
handle
http://hdl.handle.net/1854/LU-211189
date created
2004-04-16 09:38:00
date last changed
2010-03-30 13:49:14
@article{211189,
  abstract     = {Over a period of 227 days properties of activated sludge grown in an aequencing batch reactor (SBR) operated under stable conditions were analyzed. Settling properties (sludge volume index (SVI)) of the activated sludge were compared with on-line measurements of floc size and size distribution obtained by using a laser light scattering technique (Malvern Mastersizer/S, Malvern, UK), and with measurements of microbial community dynamics analyzed by denaturing gradient gel electrophoresis (DGGE) patterns of 16S rRNA genes. In addition, microscopical observations were used to confirm the results. Three distinct stages in the SBR evolution were observed. In the first stage the structural floc properties showed predominant presence of floc-forming bacteria in the activated sludge. A good correlation between floc size, settling properties and microbial community evolution was observed. The second stage showed a good balance between floc-forming and filamentous bacteria, with good settling properties and a highly dynamic community in the SBR. In the third stage, an increase in the filamentous bacteria, which became predominant in the system was observed. Again, a good correlation between settling properties and floc size distribution was obtained and a new dominant species was observed in the DGGE patterns, which can be assumed to be a filamentous organism.},
  author       = {Govoreanu, Ruxandra and Seghers, D and Nopens, Ingmar and De Clercq, B and Saveyn, Hans and Capalozza, C and Van Der Meeren, Paul and Verstraete, Willy and Top, Eva M and Vanrolleghem, Peter A},
  issn         = {0273-1223},
  journal      = {WATER SCIENCE AND TECHNOLOGY},
  keyword      = {sequencing batch reactor,IMAGE-ANALYSIS,population dynamics,SIZE DISTRIBUTION,floc size distribution,sludge volume index,SETTLEABILITY,DGGE},
  language     = {eng},
  location     = {Melbourne, Australia},
  number       = {12},
  pages        = {9--18},
  title        = {Linking floc structure and settling properties to activated sludge population dynamics in an SBR},
  volume       = {47},
  year         = {2003},
}

Chicago
Govoreanu, Ruxandra, D Seghers, Ingmar Nopens, B De Clercq, Hans Saveyn, C Capalozza, Paul Van Der Meeren, Willy Verstraete, Eva M Top, and Peter A Vanrolleghem. 2003. “Linking Floc Structure and Settling Properties to Activated Sludge Population Dynamics in an SBR.” Water Science and Technology 47 (12): 9–18.
APA
Govoreanu, R., Seghers, D., Nopens, I., De Clercq, B., Saveyn, H., Capalozza, C., Van Der Meeren, P., et al. (2003). Linking floc structure and settling properties to activated sludge population dynamics in an SBR. WATER SCIENCE AND TECHNOLOGY, 47(12), 9–18. Presented at the 3rd World Water Congress of the International-Water-Association.
Vancouver
1.
Govoreanu R, Seghers D, Nopens I, De Clercq B, Saveyn H, Capalozza C, et al. Linking floc structure and settling properties to activated sludge population dynamics in an SBR. WATER SCIENCE AND TECHNOLOGY. 2003;47(12):9–18.
MLA
Govoreanu, Ruxandra, D Seghers, Ingmar Nopens, et al. “Linking Floc Structure and Settling Properties to Activated Sludge Population Dynamics in an SBR.” WATER SCIENCE AND TECHNOLOGY 47.12 (2003): 9–18. Print.