Effect of hydraulic retention time on chemical oxygen demand and total nitrogen removal in intermittently aerated constructed wetlands

Detalhes bibliográficos
Autor(a) principal: Da Silva, Isabela Pires [UNESP]
Data de Publicação: 2020
Outros Autores: Da Costa, Gabriela Barbosa [UNESP], Queluz, João Gabriel Thomaz [UNESP], Garcia, Marcelo Loureiro [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.4136/ambi-agua.2504
http://hdl.handle.net/11449/200508
Resumo: This study evaluated the effect of hydraulic retention time on chemical oxygen demand (COD) and total nitrogen (TN) removal in an intermittently aerated constructed wetlands. Two horizontal subsurface-flow constructed wetlands were used: One without aeration and the other aerated intermittently (1 hour with aeration/7 hours without aeration). Both systems were evaluated treating domestic wastewater produced synthetically. The flow rate into the two CWs was 8.6 L day-1 having a hydraulic retention time of 3 days. The results show that the intermittently aerated constructed wetland were highly efficient in removing COD (98.25%), TN (83.60%) and total phosphorus (78.10%), while the non-aerated constructed wetland showed lower efficiencies in the removal of COD (93.89%), TN (48.60%) and total phosphorus (58.66). These results indicate, therefore, that intermittent aeration allows the simultaneous occurrence of nitrification and denitrification processes, improving the removal of TN in horizontal subsurface-flow constructed wetlands. In addition, the use of intermittent aeration also improves the performance of constructed wetlands in removing COD and total phosphorus.
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spelling Effect of hydraulic retention time on chemical oxygen demand and total nitrogen removal in intermittently aerated constructed wetlandsRemoção de DQO e Nitrogênio Total em alagados construídos com aeração intermitente em relação ao tempo de detenção hidráulicaEcotechnologyEffluent treatmentNutrients removalThis study evaluated the effect of hydraulic retention time on chemical oxygen demand (COD) and total nitrogen (TN) removal in an intermittently aerated constructed wetlands. Two horizontal subsurface-flow constructed wetlands were used: One without aeration and the other aerated intermittently (1 hour with aeration/7 hours without aeration). Both systems were evaluated treating domestic wastewater produced synthetically. The flow rate into the two CWs was 8.6 L day-1 having a hydraulic retention time of 3 days. The results show that the intermittently aerated constructed wetland were highly efficient in removing COD (98.25%), TN (83.60%) and total phosphorus (78.10%), while the non-aerated constructed wetland showed lower efficiencies in the removal of COD (93.89%), TN (48.60%) and total phosphorus (58.66). These results indicate, therefore, that intermittent aeration allows the simultaneous occurrence of nitrification and denitrification processes, improving the removal of TN in horizontal subsurface-flow constructed wetlands. In addition, the use of intermittent aeration also improves the performance of constructed wetlands in removing COD and total phosphorus.Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Avenida 24-A, n° 1515Centro de Estudos Ambientais Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Avenida 24-A, n° 1515Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Avenida 24-A, n° 1515Centro de Estudos Ambientais Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), Avenida 24-A, n° 1515Universidade Estadual Paulista (Unesp)Da Silva, Isabela Pires [UNESP]Da Costa, Gabriela Barbosa [UNESP]Queluz, João Gabriel Thomaz [UNESP]Garcia, Marcelo Loureiro [UNESP]2020-12-12T02:08:25Z2020-12-12T02:08:25Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.4136/ambi-agua.2504Revista Ambiente e Agua, v. 15, n. 3, 2020.1980-993Xhttp://hdl.handle.net/11449/20050810.4136/ambi-agua.2504S1980-993X20200003003072-s2.0-85085281813S1980-993X2020000300307.pdf48011456542063050000-0002-6002-3840Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Ambiente e Aguainfo:eu-repo/semantics/openAccess2024-04-10T19:22:25Zoai:repositorio.unesp.br:11449/200508Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:37:54.606523Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effect of hydraulic retention time on chemical oxygen demand and total nitrogen removal in intermittently aerated constructed wetlands
Remoção de DQO e Nitrogênio Total em alagados construídos com aeração intermitente em relação ao tempo de detenção hidráulica
title Effect of hydraulic retention time on chemical oxygen demand and total nitrogen removal in intermittently aerated constructed wetlands
spellingShingle Effect of hydraulic retention time on chemical oxygen demand and total nitrogen removal in intermittently aerated constructed wetlands
Da Silva, Isabela Pires [UNESP]
Ecotechnology
Effluent treatment
Nutrients removal
title_short Effect of hydraulic retention time on chemical oxygen demand and total nitrogen removal in intermittently aerated constructed wetlands
title_full Effect of hydraulic retention time on chemical oxygen demand and total nitrogen removal in intermittently aerated constructed wetlands
title_fullStr Effect of hydraulic retention time on chemical oxygen demand and total nitrogen removal in intermittently aerated constructed wetlands
title_full_unstemmed Effect of hydraulic retention time on chemical oxygen demand and total nitrogen removal in intermittently aerated constructed wetlands
title_sort Effect of hydraulic retention time on chemical oxygen demand and total nitrogen removal in intermittently aerated constructed wetlands
author Da Silva, Isabela Pires [UNESP]
author_facet Da Silva, Isabela Pires [UNESP]
Da Costa, Gabriela Barbosa [UNESP]
Queluz, João Gabriel Thomaz [UNESP]
Garcia, Marcelo Loureiro [UNESP]
author_role author
author2 Da Costa, Gabriela Barbosa [UNESP]
Queluz, João Gabriel Thomaz [UNESP]
Garcia, Marcelo Loureiro [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Da Silva, Isabela Pires [UNESP]
Da Costa, Gabriela Barbosa [UNESP]
Queluz, João Gabriel Thomaz [UNESP]
Garcia, Marcelo Loureiro [UNESP]
dc.subject.por.fl_str_mv Ecotechnology
Effluent treatment
Nutrients removal
topic Ecotechnology
Effluent treatment
Nutrients removal
description This study evaluated the effect of hydraulic retention time on chemical oxygen demand (COD) and total nitrogen (TN) removal in an intermittently aerated constructed wetlands. Two horizontal subsurface-flow constructed wetlands were used: One without aeration and the other aerated intermittently (1 hour with aeration/7 hours without aeration). Both systems were evaluated treating domestic wastewater produced synthetically. The flow rate into the two CWs was 8.6 L day-1 having a hydraulic retention time of 3 days. The results show that the intermittently aerated constructed wetland were highly efficient in removing COD (98.25%), TN (83.60%) and total phosphorus (78.10%), while the non-aerated constructed wetland showed lower efficiencies in the removal of COD (93.89%), TN (48.60%) and total phosphorus (58.66). These results indicate, therefore, that intermittent aeration allows the simultaneous occurrence of nitrification and denitrification processes, improving the removal of TN in horizontal subsurface-flow constructed wetlands. In addition, the use of intermittent aeration also improves the performance of constructed wetlands in removing COD and total phosphorus.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-12T02:08:25Z
2020-12-12T02:08:25Z
2020-01-01
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/10.4136/ambi-agua.2504
Revista Ambiente e Agua, v. 15, n. 3, 2020.
1980-993X
http://hdl.handle.net/11449/200508
10.4136/ambi-agua.2504
S1980-993X2020000300307
2-s2.0-85085281813
S1980-993X2020000300307.pdf
4801145654206305
0000-0002-6002-3840
url http://dx.doi.org/10.4136/ambi-agua.2504
http://hdl.handle.net/11449/200508
identifier_str_mv Revista Ambiente e Agua, v. 15, n. 3, 2020.
1980-993X
10.4136/ambi-agua.2504
S1980-993X2020000300307
2-s2.0-85085281813
S1980-993X2020000300307.pdf
4801145654206305
0000-0002-6002-3840
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Revista Ambiente e Agua
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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_ 1808128542033051648

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