Effect of aeration rate on the performance of intermittently aerated constructed wetland

Detalhes bibliográficos
Autor(a) principal: Queluz, João Gabriel Thomaz [UNESP]
Data de Publicação: 2021
Outros Autores: Yabuki, Lauren Nozomi Marques [UNESP], Garcia, Marcelo Loureiro [UNESP]
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.15809/irriga.2021v26n1p151-164
http://hdl.handle.net/11449/233396
Resumo: The aim of the present work was to evaluate the effect of different aeration rates on the removal of total nitrogen (TN) and chemical oxygen demand (COD) in intermittently aerated horizontal subsurface flow constructed wetlands (HFCW). Four pilot-scale HFCWs were evaluated using different aeration rates (0, 2, 5, and 10 L min-1) with a fixed intermittent aeration interval of 3 h d-1 (1 h with aeration 7 h without aeration). The HFCWs received 8.6 L d-1 of synthetic effluent, resulting in a hydraulic retention time of 3 days. The results show that intermittently aerated HFCWs were highly efficient in removing COD (>97%), TN (>80%) and NH4+ (>97%), while the HFCW without aeration showed lower efficiencies in the removal of COD (93.9%), TN (48.8%), and NH4+ (57.7%). In addition, the results also show that the three intermittently aerated HFCW achieved similar performance in the removal of COD, TN, and NH4+. Finally, the results indicate that intermittent aeration allows the simultaneous occurrence of nitrification and denitrification, thus improving the performance of HFCW in removing TN. However, the use of different aeration rates does not alter COD and TN removal efficiencies.
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spelling Effect of aeration rate on the performance of intermittently aerated constructed wetlandEfeito Da Taxa De Aeração No Desempenho De Alagados Construídos Aerados IntermitentementeArtificial aerationCOD removalThe nitrogen removalThe aim of the present work was to evaluate the effect of different aeration rates on the removal of total nitrogen (TN) and chemical oxygen demand (COD) in intermittently aerated horizontal subsurface flow constructed wetlands (HFCW). Four pilot-scale HFCWs were evaluated using different aeration rates (0, 2, 5, and 10 L min-1) with a fixed intermittent aeration interval of 3 h d-1 (1 h with aeration 7 h without aeration). The HFCWs received 8.6 L d-1 of synthetic effluent, resulting in a hydraulic retention time of 3 days. The results show that intermittently aerated HFCWs were highly efficient in removing COD (>97%), TN (>80%) and NH4+ (>97%), while the HFCW without aeration showed lower efficiencies in the removal of COD (93.9%), TN (48.8%), and NH4+ (57.7%). In addition, the results also show that the three intermittently aerated HFCW achieved similar performance in the removal of COD, TN, and NH4+. Finally, the results indicate that intermittent aeration allows the simultaneous occurrence of nitrification and denitrification, thus improving the performance of HFCW in removing TN. However, the use of different aeration rates does not alter COD and TN removal efficiencies.Instituto de Geociências e Ciências Extas Universidade Estadual Paulista, Avenida 24 A, 1515Instituto de Geociências e Ciências Extas Universidade Estadual Paulista, Avenida 24 A, 1515Universidade Estadual Paulista (UNESP)Queluz, João Gabriel Thomaz [UNESP]Yabuki, Lauren Nozomi Marques [UNESP]Garcia, Marcelo Loureiro [UNESP]2022-05-01T08:15:16Z2022-05-01T08:15:16Z2021-03-31info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article151-164http://dx.doi.org/10.15809/irriga.2021v26n1p151-164IRRIGA, v. 26, n. 1, p. 151-164, 2021.1808-37651413-7895http://hdl.handle.net/11449/23339610.15809/irriga.2021v26n1p151-1642-s2.0-85112530754Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporIRRIGAinfo:eu-repo/semantics/openAccess2022-05-01T08:15:16Zoai:repositorio.unesp.br:11449/233396Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:07:14.488001Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effect of aeration rate on the performance of intermittently aerated constructed wetland
Efeito Da Taxa De Aeração No Desempenho De Alagados Construídos Aerados Intermitentemente
title Effect of aeration rate on the performance of intermittently aerated constructed wetland
spellingShingle Effect of aeration rate on the performance of intermittently aerated constructed wetland
Queluz, João Gabriel Thomaz [UNESP]
Artificial aeration
COD removal
The nitrogen removal
title_short Effect of aeration rate on the performance of intermittently aerated constructed wetland
title_full Effect of aeration rate on the performance of intermittently aerated constructed wetland
title_fullStr Effect of aeration rate on the performance of intermittently aerated constructed wetland
title_full_unstemmed Effect of aeration rate on the performance of intermittently aerated constructed wetland
title_sort Effect of aeration rate on the performance of intermittently aerated constructed wetland
author Queluz, João Gabriel Thomaz [UNESP]
author_facet Queluz, João Gabriel Thomaz [UNESP]
Yabuki, Lauren Nozomi Marques [UNESP]
Garcia, Marcelo Loureiro [UNESP]
author_role author
author2 Yabuki, Lauren Nozomi Marques [UNESP]
Garcia, Marcelo Loureiro [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Queluz, João Gabriel Thomaz [UNESP]
Yabuki, Lauren Nozomi Marques [UNESP]
Garcia, Marcelo Loureiro [UNESP]
dc.subject.por.fl_str_mv Artificial aeration
COD removal
The nitrogen removal
topic Artificial aeration
COD removal
The nitrogen removal
description The aim of the present work was to evaluate the effect of different aeration rates on the removal of total nitrogen (TN) and chemical oxygen demand (COD) in intermittently aerated horizontal subsurface flow constructed wetlands (HFCW). Four pilot-scale HFCWs were evaluated using different aeration rates (0, 2, 5, and 10 L min-1) with a fixed intermittent aeration interval of 3 h d-1 (1 h with aeration 7 h without aeration). The HFCWs received 8.6 L d-1 of synthetic effluent, resulting in a hydraulic retention time of 3 days. The results show that intermittently aerated HFCWs were highly efficient in removing COD (>97%), TN (>80%) and NH4+ (>97%), while the HFCW without aeration showed lower efficiencies in the removal of COD (93.9%), TN (48.8%), and NH4+ (57.7%). In addition, the results also show that the three intermittently aerated HFCW achieved similar performance in the removal of COD, TN, and NH4+. Finally, the results indicate that intermittent aeration allows the simultaneous occurrence of nitrification and denitrification, thus improving the performance of HFCW in removing TN. However, the use of different aeration rates does not alter COD and TN removal efficiencies.
publishDate 2021
dc.date.none.fl_str_mv 2021-03-31
2022-05-01T08:15:16Z
2022-05-01T08:15:16Z
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/10.15809/irriga.2021v26n1p151-164
IRRIGA, v. 26, n. 1, p. 151-164, 2021.
1808-3765
1413-7895
http://hdl.handle.net/11449/233396
10.15809/irriga.2021v26n1p151-164
2-s2.0-85112530754
url http://dx.doi.org/10.15809/irriga.2021v26n1p151-164
http://hdl.handle.net/11449/233396
identifier_str_mv IRRIGA, v. 26, n. 1, p. 151-164, 2021.
1808-3765
1413-7895
10.15809/irriga.2021v26n1p151-164
2-s2.0-85112530754
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv IRRIGA
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 151-164
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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