Effect of aeration rate on the performance of intermittently aerated constructed wetland
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/10.15809/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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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 |
|
_version_ |
1808128464045211648 |