Temporal dynamics of water quality in an urban stream
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1413-415220200163 http://hdl.handle.net/11449/233914 |
Resumo: | Urbanization leads to the addition of areas of low permeability in watersheds, which results in an increase in the volume of rainwater drained superficially and, consequently, in the expansion of pollutants carried to the receiving watercourses, which may impair the quality of their waters. The main objective of this research was to analyze the variation in water quality throughout the day in a stream impacted by urban areas through the water quality index (WQICETESB) and the parameters involved in its calculation. Sample collection was performed once a month, for a period of seven months, at the following times: 8:00 am, 2:00 pm, and 7:00 pm. In general, low concentrations of dissolved oxygen and high levels of organic matter and nutrients were found in the stream evaluated. Sampling at different times of the day was efficient in terms of understanding the anthropic processes that take place in the studied sub-basin (e.g., the release of fresh domestic sewage and intense phosphorus input in the morning). In addition, a significant fluctuation in the value of the WQICETESB was observed between the three periods of the day, as in June 2018: 52 (morning) and 23 (night). Thus, the evaluation of the WQICETESB conducted in only one hour of the day can pass on essential information for environmental managers, resulting in an erroneous view of the problem. |
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Temporal dynamics of water quality in an urban streamDinâmica temporal da qualidade da água em um córrego urbanoEnvironmental degradationNonpoint pollutionWater quality indexUrbanization leads to the addition of areas of low permeability in watersheds, which results in an increase in the volume of rainwater drained superficially and, consequently, in the expansion of pollutants carried to the receiving watercourses, which may impair the quality of their waters. The main objective of this research was to analyze the variation in water quality throughout the day in a stream impacted by urban areas through the water quality index (WQICETESB) and the parameters involved in its calculation. Sample collection was performed once a month, for a period of seven months, at the following times: 8:00 am, 2:00 pm, and 7:00 pm. In general, low concentrations of dissolved oxygen and high levels of organic matter and nutrients were found in the stream evaluated. Sampling at different times of the day was efficient in terms of understanding the anthropic processes that take place in the studied sub-basin (e.g., the release of fresh domestic sewage and intense phosphorus input in the morning). In addition, a significant fluctuation in the value of the WQICETESB was observed between the three periods of the day, as in June 2018: 52 (morning) and 23 (night). Thus, the evaluation of the WQICETESB conducted in only one hour of the day can pass on essential information for environmental managers, resulting in an erroneous view of the problem.Universidade Estadual Paulista “Júlio de Mesquita Filho”Universidade Estadual Paulista “Júlio de Mesquita Filho”Universidade Estadual Paulista (UNESP)Bega, João Miguel Merces [UNESP]de Oliveira, Jefferson Nascimento [UNESP]Albertin, Liliane Lazzari [UNESP]2022-05-01T11:39:07Z2022-05-01T11:39:07Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article903-913http://dx.doi.org/10.1590/S1413-415220200163Engenharia Sanitaria e Ambiental, v. 26, n. 5, p. 903-913, 2021.1413-4152http://hdl.handle.net/11449/23391410.1590/S1413-4152202001632-s2.0-85121431309Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporEngenharia Sanitaria e Ambientalinfo:eu-repo/semantics/openAccess2024-07-04T18:15:58Zoai:repositorio.unesp.br:11449/233914Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:33:56.112875Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Temporal dynamics of water quality in an urban stream Dinâmica temporal da qualidade da água em um córrego urbano |
title |
Temporal dynamics of water quality in an urban stream |
spellingShingle |
Temporal dynamics of water quality in an urban stream Bega, João Miguel Merces [UNESP] Environmental degradation Nonpoint pollution Water quality index |
title_short |
Temporal dynamics of water quality in an urban stream |
title_full |
Temporal dynamics of water quality in an urban stream |
title_fullStr |
Temporal dynamics of water quality in an urban stream |
title_full_unstemmed |
Temporal dynamics of water quality in an urban stream |
title_sort |
Temporal dynamics of water quality in an urban stream |
author |
Bega, João Miguel Merces [UNESP] |
author_facet |
Bega, João Miguel Merces [UNESP] de Oliveira, Jefferson Nascimento [UNESP] Albertin, Liliane Lazzari [UNESP] |
author_role |
author |
author2 |
de Oliveira, Jefferson Nascimento [UNESP] Albertin, Liliane Lazzari [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Bega, João Miguel Merces [UNESP] de Oliveira, Jefferson Nascimento [UNESP] Albertin, Liliane Lazzari [UNESP] |
dc.subject.por.fl_str_mv |
Environmental degradation Nonpoint pollution Water quality index |
topic |
Environmental degradation Nonpoint pollution Water quality index |
description |
Urbanization leads to the addition of areas of low permeability in watersheds, which results in an increase in the volume of rainwater drained superficially and, consequently, in the expansion of pollutants carried to the receiving watercourses, which may impair the quality of their waters. The main objective of this research was to analyze the variation in water quality throughout the day in a stream impacted by urban areas through the water quality index (WQICETESB) and the parameters involved in its calculation. Sample collection was performed once a month, for a period of seven months, at the following times: 8:00 am, 2:00 pm, and 7:00 pm. In general, low concentrations of dissolved oxygen and high levels of organic matter and nutrients were found in the stream evaluated. Sampling at different times of the day was efficient in terms of understanding the anthropic processes that take place in the studied sub-basin (e.g., the release of fresh domestic sewage and intense phosphorus input in the morning). In addition, a significant fluctuation in the value of the WQICETESB was observed between the three periods of the day, as in June 2018: 52 (morning) and 23 (night). Thus, the evaluation of the WQICETESB conducted in only one hour of the day can pass on essential information for environmental managers, resulting in an erroneous view of the problem. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 2022-05-01T11:39:07Z 2022-05-01T11:39:07Z |
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/10.1590/S1413-415220200163 Engenharia Sanitaria e Ambiental, v. 26, n. 5, p. 903-913, 2021. 1413-4152 http://hdl.handle.net/11449/233914 10.1590/S1413-415220200163 2-s2.0-85121431309 |
url |
http://dx.doi.org/10.1590/S1413-415220200163 http://hdl.handle.net/11449/233914 |
identifier_str_mv |
Engenharia Sanitaria e Ambiental, v. 26, n. 5, p. 903-913, 2021. 1413-4152 10.1590/S1413-415220200163 2-s2.0-85121431309 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Engenharia Sanitaria e Ambiental |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
903-913 |
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 |
|
_version_ |
1808128533973696512 |