Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land covers
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.ecoleng.2020.106012 http://hdl.handle.net/11449/200913 |
Resumo: | Liquid-phase nonpoint source pollution dispersion and removal on sustainable urban drainage systems (SUDS) is an important issue for urban pollution mitigation which remains a challenge, as current researches mostly focus on pollutants removal by settling. Nevertheless, most of liquid-phase pollutants behave as dissolved substances on overland flow and, therefore, they cannot be trapped, but uptake by biological mechanisms and adsorbed by green infrastructure media. Hence, dispersion of dissolved pollutant is of great importance for liquid-phase pollution removal, as it also increases contact with underlying media in the SUDS. This paper addresses the liquid-phase pollutant dispersion on conveyance structures within different materials, using experimental and modelling analysis. Hydrodynamic dispersion and flow velocity were analysed separately, or conjoint, using dispersivity, as it is a key factor for porous solute transport and removal. Therefore, the effect of different covers on pavements draining to, or as part of, SUDS with very shallow runoff was investigated. Four scenarios were performed in triplicate to measure the flow velocity and the conservative solute transport across longitudinal section of flume (experimental indoors self-contained setup) using electrolyte tracer under different flow discharges (32–1813 ml s−1) with 0.8, 4.4 and 13.2% slopes. For one scenario, free water flow on a smooth surface was performed and results were used as control. For the three remaining scenarios: sand roughness, stone and synthetic grass covers were investigated. The ratio of the dispersion coefficient and flow velocity (i.e. dispersivity factor) was also determined and compared with control. Finally, data were analysed considering flow regimes, using the dimensionless Reynolds and Froude numbers. Results showed that surface covers caused reduction in the flow velocity, from 1.2 to 7.7 fold. However, dispersivity factor can be increased from 3 to nearly 10 orders of magnitude for the three scenarios, compared to control, due to the dual effect on hydrodynamic dispersion coefficient and flow velocity. Results here presented should be helpful to better understand dissolved non-point source pollution dispersion and how different land covers can effect pollutant removal. |
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Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land coversHydrodynamic dispersionNonpoint pollutionOverland flowSolute transportUrban drainageLiquid-phase nonpoint source pollution dispersion and removal on sustainable urban drainage systems (SUDS) is an important issue for urban pollution mitigation which remains a challenge, as current researches mostly focus on pollutants removal by settling. Nevertheless, most of liquid-phase pollutants behave as dissolved substances on overland flow and, therefore, they cannot be trapped, but uptake by biological mechanisms and adsorbed by green infrastructure media. Hence, dispersion of dissolved pollutant is of great importance for liquid-phase pollution removal, as it also increases contact with underlying media in the SUDS. This paper addresses the liquid-phase pollutant dispersion on conveyance structures within different materials, using experimental and modelling analysis. Hydrodynamic dispersion and flow velocity were analysed separately, or conjoint, using dispersivity, as it is a key factor for porous solute transport and removal. Therefore, the effect of different covers on pavements draining to, or as part of, SUDS with very shallow runoff was investigated. Four scenarios were performed in triplicate to measure the flow velocity and the conservative solute transport across longitudinal section of flume (experimental indoors self-contained setup) using electrolyte tracer under different flow discharges (32–1813 ml s−1) with 0.8, 4.4 and 13.2% slopes. For one scenario, free water flow on a smooth surface was performed and results were used as control. For the three remaining scenarios: sand roughness, stone and synthetic grass covers were investigated. The ratio of the dispersion coefficient and flow velocity (i.e. dispersivity factor) was also determined and compared with control. Finally, data were analysed considering flow regimes, using the dimensionless Reynolds and Froude numbers. Results showed that surface covers caused reduction in the flow velocity, from 1.2 to 7.7 fold. However, dispersivity factor can be increased from 3 to nearly 10 orders of magnitude for the three scenarios, compared to control, due to the dual effect on hydrodynamic dispersion coefficient and flow velocity. Results here presented should be helpful to better understand dissolved non-point source pollution dispersion and how different land covers can effect pollutant removal.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Geoprocessing and Territorial Planning Department Geosciences and Mathematics Institute UNESP – Univ. Estadual PaulistaMARE - Marine and Environmental Sciences CentreDepartment of Civil Engineering FCTUC - Faculty of Sciences and Technology University of CoimbraInstitute of Science and Technology Federal University of AlfenasGeoprocessing and Territorial Planning Department Geosciences and Mathematics Institute UNESP – Univ. Estadual PaulistaCNPq: 206872/2014-3CNPq: 301210/2018-7Universidade Estadual Paulista (Unesp)MARE - Marine and Environmental Sciences CentreUniversity of CoimbraFederal University of AlfenasMoruzzi, Rodrigo B. [UNESP]de Lima, João L.M.P.Abrantes, João R.C.B.Silveira, Alexandre2020-12-12T02:19:21Z2020-12-12T02:19:21Z2020-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.ecoleng.2020.106012Ecological Engineering, v. 158.0925-8574http://hdl.handle.net/11449/20091310.1016/j.ecoleng.2020.1060122-s2.0-85089544302Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEcological Engineeringinfo:eu-repo/semantics/openAccess2021-10-23T15:09:09Zoai:repositorio.unesp.br:11449/200913Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:09:11.063107Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land covers |
title |
Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land covers |
spellingShingle |
Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land covers Moruzzi, Rodrigo B. [UNESP] Hydrodynamic dispersion Nonpoint pollution Overland flow Solute transport Urban drainage |
title_short |
Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land covers |
title_full |
Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land covers |
title_fullStr |
Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land covers |
title_full_unstemmed |
Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land covers |
title_sort |
Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land covers |
author |
Moruzzi, Rodrigo B. [UNESP] |
author_facet |
Moruzzi, Rodrigo B. [UNESP] de Lima, João L.M.P. Abrantes, João R.C.B. Silveira, Alexandre |
author_role |
author |
author2 |
de Lima, João L.M.P. Abrantes, João R.C.B. Silveira, Alexandre |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) MARE - Marine and Environmental Sciences Centre University of Coimbra Federal University of Alfenas |
dc.contributor.author.fl_str_mv |
Moruzzi, Rodrigo B. [UNESP] de Lima, João L.M.P. Abrantes, João R.C.B. Silveira, Alexandre |
dc.subject.por.fl_str_mv |
Hydrodynamic dispersion Nonpoint pollution Overland flow Solute transport Urban drainage |
topic |
Hydrodynamic dispersion Nonpoint pollution Overland flow Solute transport Urban drainage |
description |
Liquid-phase nonpoint source pollution dispersion and removal on sustainable urban drainage systems (SUDS) is an important issue for urban pollution mitigation which remains a challenge, as current researches mostly focus on pollutants removal by settling. Nevertheless, most of liquid-phase pollutants behave as dissolved substances on overland flow and, therefore, they cannot be trapped, but uptake by biological mechanisms and adsorbed by green infrastructure media. Hence, dispersion of dissolved pollutant is of great importance for liquid-phase pollution removal, as it also increases contact with underlying media in the SUDS. This paper addresses the liquid-phase pollutant dispersion on conveyance structures within different materials, using experimental and modelling analysis. Hydrodynamic dispersion and flow velocity were analysed separately, or conjoint, using dispersivity, as it is a key factor for porous solute transport and removal. Therefore, the effect of different covers on pavements draining to, or as part of, SUDS with very shallow runoff was investigated. Four scenarios were performed in triplicate to measure the flow velocity and the conservative solute transport across longitudinal section of flume (experimental indoors self-contained setup) using electrolyte tracer under different flow discharges (32–1813 ml s−1) with 0.8, 4.4 and 13.2% slopes. For one scenario, free water flow on a smooth surface was performed and results were used as control. For the three remaining scenarios: sand roughness, stone and synthetic grass covers were investigated. The ratio of the dispersion coefficient and flow velocity (i.e. dispersivity factor) was also determined and compared with control. Finally, data were analysed considering flow regimes, using the dimensionless Reynolds and Froude numbers. Results showed that surface covers caused reduction in the flow velocity, from 1.2 to 7.7 fold. However, dispersivity factor can be increased from 3 to nearly 10 orders of magnitude for the three scenarios, compared to control, due to the dual effect on hydrodynamic dispersion coefficient and flow velocity. Results here presented should be helpful to better understand dissolved non-point source pollution dispersion and how different land covers can effect pollutant removal. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T02:19:21Z 2020-12-12T02:19:21Z 2020-12-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.ecoleng.2020.106012 Ecological Engineering, v. 158. 0925-8574 http://hdl.handle.net/11449/200913 10.1016/j.ecoleng.2020.106012 2-s2.0-85089544302 |
url |
http://dx.doi.org/10.1016/j.ecoleng.2020.106012 http://hdl.handle.net/11449/200913 |
identifier_str_mv |
Ecological Engineering, v. 158. 0925-8574 10.1016/j.ecoleng.2020.106012 2-s2.0-85089544302 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ecological Engineering |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128322330165248 |