Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters

Sand media filtration is frequently used in drip irrigation systems. Commercial filter designs may use different underdrain models but wand-type designs provide a large ratio of horizontal area covered by underdrains and are expected to provide a uniform flow of water through the medium. The complex...

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Authors: Pujol i Sagaró, Toni, Puig Bargués, Jaume, Arbat Pujolràs, Gerard, Duran i Ros, Miquel, Solé Torres, Carles, Pujol Planella, Joan, Ramírez de Cartagena Bisbe, Francisco
Format: article
Status:Versión aceptada para publicación
Publication Date:2020
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/24227
Online Access:http://hdl.handle.net/10256/24227
Access Level:Open access
Keyword:Regatge per degoteig
Trickle irrigation
Filtres i filtració
Filters and filtration
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spelling Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filtersPujol i Sagaró, ToniPuig Bargués, JaumeArbat Pujolràs, GerardDuran i Ros, MiquelSolé Torres, CarlesPujol Planella, JoanRamírez de Cartagena Bisbe, FranciscoRegatge per degoteigTrickle irrigationFiltres i filtracióFilters and filtrationSand media filtration is frequently used in drip irrigation systems. Commercial filter designs may use different underdrain models but wand-type designs provide a large ratio of horizontal area covered by underdrains and are expected to provide a uniform flow of water through the medium. The complexity of these designs makes it difficult to analyse the effects of changing the position of wand and the slot open area. These underdrain effects were studied by means of a computational fluid dynamics (CFD) model assuming clean water conditions. The backwashing process was not considered. The CFD results were validated using experimental data from a commercial sand media filter with 10 wands. Unbalanced flows between underdrains were observed in the original configuration. Two new designs were proposed: (1) a design that uses the same type of wands as the original filter but distributes them so as to have an equal horizontal area served by each wand; (2) a design that uses the same spatial distribution as the original filter but with longer wands in those regions of the original filter with lower volumetric flow. CFD simulations indicate that design (1) can reduce the pressure drop through the filter at nominal volumetric flow rates by up to 5.8% with a more uniform flow inside the medium and design (2) could improve the performance of the filter by achieving an up to a 4.9% reduction of pressure drop. Thus, the spatial distribution of underdrains is a key parameter in the hydraulic performance of sand media filtersElsevier2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionpeer-reviewed12 p.application/pdfhttp://hdl.handle.net/10256/24227© Biosystems Engineering, 2020, vol. 192, p. 176-187Articles publicats (D-EQATA)Pujol i Sagaró, Toni Puig Bargués, Jaume Arbat Pujolràs, Gerard Duran i Ros, Miquel Solé Torres, Carles Pujol Planella, Joan Ramírez de Cartagena Bisbe, Francisco 2020 Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters Biosystems Engineering 192 176 187reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.biosystemseng.2020.01.015info:eu-repo/semantics/altIdentifier/issn/1537-5110info:eu-repo/semantics/altIdentifier/eissn/1537-5129Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0info:eu-repo/semantics/openAccessoai:recercat.cat:10256/242272026-05-29T05:05:01Z
dc.title.none.fl_str_mv Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters
title Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters
spellingShingle Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters
Pujol i Sagaró, Toni
Regatge per degoteig
Trickle irrigation
Filtres i filtració
Filters and filtration
title_short Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters
title_full Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters
title_fullStr Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters
title_full_unstemmed Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters
title_sort Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters
dc.creator.none.fl_str_mv Pujol i Sagaró, Toni
Puig Bargués, Jaume
Arbat Pujolràs, Gerard
Duran i Ros, Miquel
Solé Torres, Carles
Pujol Planella, Joan
Ramírez de Cartagena Bisbe, Francisco
author Pujol i Sagaró, Toni
author_facet Pujol i Sagaró, Toni
Puig Bargués, Jaume
Arbat Pujolràs, Gerard
Duran i Ros, Miquel
Solé Torres, Carles
Pujol Planella, Joan
Ramírez de Cartagena Bisbe, Francisco
author_role author
author2 Puig Bargués, Jaume
Arbat Pujolràs, Gerard
Duran i Ros, Miquel
Solé Torres, Carles
Pujol Planella, Joan
Ramírez de Cartagena Bisbe, Francisco
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Regatge per degoteig
Trickle irrigation
Filtres i filtració
Filters and filtration
topic Regatge per degoteig
Trickle irrigation
Filtres i filtració
Filters and filtration
description Sand media filtration is frequently used in drip irrigation systems. Commercial filter designs may use different underdrain models but wand-type designs provide a large ratio of horizontal area covered by underdrains and are expected to provide a uniform flow of water through the medium. The complexity of these designs makes it difficult to analyse the effects of changing the position of wand and the slot open area. These underdrain effects were studied by means of a computational fluid dynamics (CFD) model assuming clean water conditions. The backwashing process was not considered. The CFD results were validated using experimental data from a commercial sand media filter with 10 wands. Unbalanced flows between underdrains were observed in the original configuration. Two new designs were proposed: (1) a design that uses the same type of wands as the original filter but distributes them so as to have an equal horizontal area served by each wand; (2) a design that uses the same spatial distribution as the original filter but with longer wands in those regions of the original filter with lower volumetric flow. CFD simulations indicate that design (1) can reduce the pressure drop through the filter at nominal volumetric flow rates by up to 5.8% with a more uniform flow inside the medium and design (2) could improve the performance of the filter by achieving an up to a 4.9% reduction of pressure drop. Thus, the spatial distribution of underdrains is a key parameter in the hydraulic performance of sand media filters
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
peer-reviewed
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/24227
url http://hdl.handle.net/10256/24227
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.biosystemseng.2020.01.015
info:eu-repo/semantics/altIdentifier/issn/1537-5110
info:eu-repo/semantics/altIdentifier/eissn/1537-5129
dc.rights.none.fl_str_mv Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 12 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv © Biosystems Engineering, 2020, vol. 192, p. 176-187
Articles publicats (D-EQATA)
Pujol i Sagaró, Toni Puig Bargués, Jaume Arbat Pujolràs, Gerard Duran i Ros, Miquel Solé Torres, Carles Pujol Planella, Joan Ramírez de Cartagena Bisbe, Francisco 2020 Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters Biosystems Engineering 192 176 187
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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