Experimental and numerical analysis of the hydrodynamic behaviors of aerobic granules

Publication: Research - peer-reviewJournal article – Annual report year: 2011

Without internal affiliation

  • Author: Liu, Li

    University of Science and Technology of China

  • Author: Sheng, Guo‐Ping

    University of Science and Technology of China

  • Author: Li, Wen‐Wei

    University of Science and Technology of China

  • Author: Zeng, Raymond J.

    University of Science and Technology of China

  • Author: Yu, Han‐Qing

    University of Science and Technology of China

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Aerobic granular sludge has been recognized to be promising for wastewater treatment. Their hydrodynamic characteristics have a significant impact on the mass transfer process in reactors. In this study, the hydrodynamic characteristics of aerobic granules were studied using an experimental approach, and their fluid dynamic behaviors were analyzed using a numerical approach. Experimental results show that the aerobic granules are fractal‐like aggregates with porosity. Their porosity and permeability were found to increase with increasing granule size. The numerical model simulated the flow field surrounding a granule, which distinguished the flow behaviors of the granules with different permeability at different outflow Reynolds numbers. The velocity vectors colored by velocity magnitude in the granule internal depended significantly on the permeability of the granule and the Reynolds number. The results provided a helpful tool to investigate the hydrodynamic behavior of aerobic granules with a consideration of their porous structure characteristics. © 2010 American Institute of Chemical Engineers AIChE J, 2011
Original languageEnglish
JournalA I Ch E Journal
Publication date2011
Volume57
Issue10
Pages2909-2916
ISSN0001-1541
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 2
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