Liquid phase nonpoint source pollution dispersion through conveyance structures to sustainable urban drainage system within different land covers

Detalhes bibliográficos
Autor(a) principal: Moruzzi, Rodrigo B. [UNESP]
Data de Publicação: 2020
Outros Autores: de Lima, João L.M.P., Abrantes, João R.C.B., Silveira, Alexandre
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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spelling 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)
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