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Computational fluid dynamics simulation as a tool for optimizing the hydrodynamic performance of membrane bioreactors
The hydrodynamic properties and shear stresses experienced by a membrane bioreactor (MBR) are directly related to its rate of membrane fouling. In this study, computational fluid dynamic models have been combined with cold model PIV experimental studies to optimize the performance properties of MBRs...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9072933/ https://www.ncbi.nlm.nih.gov/pubmed/35530793 http://dx.doi.org/10.1039/c9ra06706j |
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author | Jin, Yan Liu, Cheng-Lin Song, Xing-Fu Yu, Jian-Guo |
author_facet | Jin, Yan Liu, Cheng-Lin Song, Xing-Fu Yu, Jian-Guo |
author_sort | Jin, Yan |
collection | PubMed |
description | The hydrodynamic properties and shear stresses experienced by a membrane bioreactor (MBR) are directly related to its rate of membrane fouling. In this study, computational fluid dynamic models have been combined with cold model PIV experimental studies to optimize the performance properties of MBRs. The effects of membrane module height, number of aeration tubes and membrane spacing on liquid phase flow rates, gas holdup and shear stresses at the membrane surface have been investigated. It has been found that optimal MBRs experience the greatest shear forces on their surfaces at a distance of 250 mm from the aeration tube, around the 7 aeration tubes used to introduce gas and at the 40 mm spacings between the membrane sheets. Use of an aeration intensity of between 0.02 and 0.47 m(3) min(−1) generated shear stresses that were 50–85% higher than the original MBR for the same aeration intensity, thus affording optimal membrane performance that minimizes membrane fouling. |
format | Online Article Text |
id | pubmed-9072933 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90729332022-05-06 Computational fluid dynamics simulation as a tool for optimizing the hydrodynamic performance of membrane bioreactors Jin, Yan Liu, Cheng-Lin Song, Xing-Fu Yu, Jian-Guo RSC Adv Chemistry The hydrodynamic properties and shear stresses experienced by a membrane bioreactor (MBR) are directly related to its rate of membrane fouling. In this study, computational fluid dynamic models have been combined with cold model PIV experimental studies to optimize the performance properties of MBRs. The effects of membrane module height, number of aeration tubes and membrane spacing on liquid phase flow rates, gas holdup and shear stresses at the membrane surface have been investigated. It has been found that optimal MBRs experience the greatest shear forces on their surfaces at a distance of 250 mm from the aeration tube, around the 7 aeration tubes used to introduce gas and at the 40 mm spacings between the membrane sheets. Use of an aeration intensity of between 0.02 and 0.47 m(3) min(−1) generated shear stresses that were 50–85% higher than the original MBR for the same aeration intensity, thus affording optimal membrane performance that minimizes membrane fouling. The Royal Society of Chemistry 2019-10-09 /pmc/articles/PMC9072933/ /pubmed/35530793 http://dx.doi.org/10.1039/c9ra06706j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Jin, Yan Liu, Cheng-Lin Song, Xing-Fu Yu, Jian-Guo Computational fluid dynamics simulation as a tool for optimizing the hydrodynamic performance of membrane bioreactors |
title | Computational fluid dynamics simulation as a tool for optimizing the hydrodynamic performance of membrane bioreactors |
title_full | Computational fluid dynamics simulation as a tool for optimizing the hydrodynamic performance of membrane bioreactors |
title_fullStr | Computational fluid dynamics simulation as a tool for optimizing the hydrodynamic performance of membrane bioreactors |
title_full_unstemmed | Computational fluid dynamics simulation as a tool for optimizing the hydrodynamic performance of membrane bioreactors |
title_short | Computational fluid dynamics simulation as a tool for optimizing the hydrodynamic performance of membrane bioreactors |
title_sort | computational fluid dynamics simulation as a tool for optimizing the hydrodynamic performance of membrane bioreactors |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9072933/ https://www.ncbi.nlm.nih.gov/pubmed/35530793 http://dx.doi.org/10.1039/c9ra06706j |
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