Hydraulic optimization of membrane bioreactor via baffle modification using computational fluid dynamics
Baffles are a key component of an airlift membrane bioreactor (MBR), which could enhance membrane surface shear for fouling control. In order to obtain an optimal hydraulic condition of the reactor, the effects of baffle location and size were systematically explored in this study. Computational flu...
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| Veröffentlicht in: | Bioresource technology 2015-01, Vol.175, p.633-637 |
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| creator | Yan, Xiaoxu Xiao, Kang Liang, Shuai Lei, Ting Liang, Peng Xue, Tao Yu, Kaichang Guan, Jing Huang, Xia |
| description | Baffles are a key component of an airlift membrane bioreactor (MBR), which could enhance membrane surface shear for fouling control. In order to obtain an optimal hydraulic condition of the reactor, the effects of baffle location and size were systematically explored in this study. Computational fluid dynamics (CFD) was used to investigate the hydrodynamics in a bench-scale airlift flat sheet MBR with various baffle locations and sizes. Validated simulation results showed that side baffles were more effective in elevating membrane surface shear than front baffles. The maximum average shear stress was achieved by adjusting baffle size when both front and side baffles were installed. With the optimized baffle configuration, the shear stress was 10-30% higher than that without baffles at a same aeration intensity (specific air demand per membrane area in the range of 0-0.45m(3)m(-2)h(-1)). The effectiveness of baffles was particularly prominent at lower aeration intensities. |
| doi_str_mv | 10.1016/j.biortech.2014.10.133 |
| format | Article |
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In order to obtain an optimal hydraulic condition of the reactor, the effects of baffle location and size were systematically explored in this study. Computational fluid dynamics (CFD) was used to investigate the hydrodynamics in a bench-scale airlift flat sheet MBR with various baffle locations and sizes. Validated simulation results showed that side baffles were more effective in elevating membrane surface shear than front baffles. The maximum average shear stress was achieved by adjusting baffle size when both front and side baffles were installed. With the optimized baffle configuration, the shear stress was 10-30% higher than that without baffles at a same aeration intensity (specific air demand per membrane area in the range of 0-0.45m(3)m(-2)h(-1)). The effectiveness of baffles was particularly prominent at lower aeration intensities.</description><identifier>ISSN: 0960-8524</identifier><identifier>EISSN: 1873-2976</identifier><identifier>DOI: 10.1016/j.biortech.2014.10.133</identifier><identifier>PMID: 25465790</identifier><language>eng</language><publisher>England</publisher><subject>Aeration ; Baffles ; Bioreactors ; Computational fluid dynamics ; Equipment Design ; Fluid flow ; Hydraulics ; Hydrodynamics ; Membranes ; Membranes, Artificial ; Shear ; Stress, Mechanical ; Waste Disposal, Fluid - instrumentation</subject><ispartof>Bioresource technology, 2015-01, Vol.175, p.633-637</ispartof><rights>Copyright © 2014 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c476t-99547131a353df3a449af50d76e8a51ac8fff1fb57748cd4d94387eae38022963</citedby><cites>FETCH-LOGICAL-c476t-99547131a353df3a449af50d76e8a51ac8fff1fb57748cd4d94387eae38022963</cites><orcidid>0000-0002-4349-2792</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25465790$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Yan, Xiaoxu</creatorcontrib><creatorcontrib>Xiao, Kang</creatorcontrib><creatorcontrib>Liang, Shuai</creatorcontrib><creatorcontrib>Lei, Ting</creatorcontrib><creatorcontrib>Liang, Peng</creatorcontrib><creatorcontrib>Xue, Tao</creatorcontrib><creatorcontrib>Yu, Kaichang</creatorcontrib><creatorcontrib>Guan, Jing</creatorcontrib><creatorcontrib>Huang, Xia</creatorcontrib><title>Hydraulic optimization of membrane bioreactor via baffle modification using computational fluid dynamics</title><title>Bioresource technology</title><addtitle>Bioresour Technol</addtitle><description>Baffles are a key component of an airlift membrane bioreactor (MBR), which could enhance membrane surface shear for fouling control. 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The effectiveness of baffles was particularly prominent at lower aeration intensities.</description><subject>Aeration</subject><subject>Baffles</subject><subject>Bioreactors</subject><subject>Computational fluid dynamics</subject><subject>Equipment Design</subject><subject>Fluid flow</subject><subject>Hydraulics</subject><subject>Hydrodynamics</subject><subject>Membranes</subject><subject>Membranes, Artificial</subject><subject>Shear</subject><subject>Stress, Mechanical</subject><subject>Waste Disposal, Fluid - instrumentation</subject><issn>0960-8524</issn><issn>1873-2976</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkUtLAzEUhYMoWqt_oWTpZmremSylqBUEN7oeMnnYlElTkxmh_nr7sG51deHwnXu49wAwwWiKERa3y2kbUu6dWUwJwmy60yk9ASNcS1oRJcUpGCElUFVzwi7AZSlLhBDFkpyDC8KZ4FKhEVjMNzbroQsGpnUfYvjSfUgrmDyMLrZZrxzcJTlt-pThZ9Cw1d53DsZkgw_mgA8lrN6hSXE99HtFd9B3Q7DQblY6BlOuwJnXXXHXP3MM3h7uX2fz6vnl8Wl291wZJkVfKcWZxBRryqn1VDOmtOfISuFqzbE2tfce-5ZLyWpjmVWM1tJpR2tEiBJ0DG4Oe9c5fQyu9E0Mxbiu216ShtLgGiGJKBHqb1RwzLgklP0DZXL7XonRFhUH1ORUSna-WecQdd40GDW77pplc-yu2XW31yndGic_GUMbnf21Hcui3zPSmQY</recordid><startdate>20150101</startdate><enddate>20150101</enddate><creator>Yan, Xiaoxu</creator><creator>Xiao, Kang</creator><creator>Liang, Shuai</creator><creator>Lei, Ting</creator><creator>Liang, Peng</creator><creator>Xue, Tao</creator><creator>Yu, Kaichang</creator><creator>Guan, Jing</creator><creator>Huang, Xia</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7SU</scope><scope>7TB</scope><scope>7U5</scope><scope>C1K</scope><scope>KR7</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-4349-2792</orcidid></search><sort><creationdate>20150101</creationdate><title>Hydraulic optimization of membrane bioreactor via baffle modification using computational fluid dynamics</title><author>Yan, Xiaoxu ; 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| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Aeration Baffles Bioreactors Computational fluid dynamics Equipment Design Fluid flow Hydraulics Hydrodynamics Membranes Membranes, Artificial Shear Stress, Mechanical Waste Disposal, Fluid - instrumentation |
| title | Hydraulic optimization of membrane bioreactor via baffle modification using computational fluid dynamics |
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