Effect of aeration on steady-state conditions in non- and partially aerated low-loaded biofilter
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.6/1958 |
Resumo: | Excessive growth of biomass and retention of solids associated with air bubbles lead to bed clogging, which affects the biofilters' performance. Two experiments were carried out in a submerged biofilter at the flow velocity of 0.5 m h(-1), for an organic loading rate of 51 g C m(-3) h(-1) and a nitrogen loading rate of 13 g NH4-N m(-3) h(-1), one with the biofilter not aerated, the other with the biofilter partially aerated. The results showed that the higher head losses occurred in the upper section of the biofilter, where there was a greater biomass development and a higher removal of organic carbon, ammonia and solids, with the maximum allowed head loss being reached in 16 and 8 days. In any case, the steady-state conditions were achieved after 2 days and were interrupted on the tenth day of experiment E1 and on the fifth day of experiment E2. This allowed defining different operating cycles that enabled an average organic removal rate of 12.7 g C m(-3) h(-1) (27 %) and an average ammonia removal rate of 1.1 g NH4-N m(-3) h(-1) (9 %) without aeration, and of 35.8 g C m(-3) h(-1) (76 %) and 6.3 g NH4-N m(-3) h(-1) (51 %) with aeration. Regardless of the aeration conditions, more than 90 % of TOC and NH4-N removal occurred in the upper section. After the backwashing cycle, the biofilter returned to steady-state conditions in 6 h (without aeration) and 7 h (with aeration). |
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7160 |
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Effect of aeration on steady-state conditions in non- and partially aerated low-loaded biofilterAerated filterBiofiltrosBiofilm reactorBackwashingNitrogen removalRemoção de azotoOrganics removalTratamento de águas residuaisExcessive growth of biomass and retention of solids associated with air bubbles lead to bed clogging, which affects the biofilters' performance. Two experiments were carried out in a submerged biofilter at the flow velocity of 0.5 m h(-1), for an organic loading rate of 51 g C m(-3) h(-1) and a nitrogen loading rate of 13 g NH4-N m(-3) h(-1), one with the biofilter not aerated, the other with the biofilter partially aerated. The results showed that the higher head losses occurred in the upper section of the biofilter, where there was a greater biomass development and a higher removal of organic carbon, ammonia and solids, with the maximum allowed head loss being reached in 16 and 8 days. In any case, the steady-state conditions were achieved after 2 days and were interrupted on the tenth day of experiment E1 and on the fifth day of experiment E2. This allowed defining different operating cycles that enabled an average organic removal rate of 12.7 g C m(-3) h(-1) (27 %) and an average ammonia removal rate of 1.1 g NH4-N m(-3) h(-1) (9 %) without aeration, and of 35.8 g C m(-3) h(-1) (76 %) and 6.3 g NH4-N m(-3) h(-1) (51 %) with aeration. Regardless of the aeration conditions, more than 90 % of TOC and NH4-N removal occurred in the upper section. After the backwashing cycle, the biofilter returned to steady-state conditions in 6 h (without aeration) and 7 h (with aeration).SpringeruBibliorumAlbuquerque, AntonioGonzalez-Martinez, A.Osorio, Francisco2014-06-30T17:36:00Z2012-072012-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/1958eng1735-147210.1007/s13762-012-0073-3info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-15T09:37:44Zoai:ubibliorum.ubi.pt:10400.6/1958Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:43:42.130361Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Effect of aeration on steady-state conditions in non- and partially aerated low-loaded biofilter |
title |
Effect of aeration on steady-state conditions in non- and partially aerated low-loaded biofilter |
spellingShingle |
Effect of aeration on steady-state conditions in non- and partially aerated low-loaded biofilter Albuquerque, Antonio Aerated filter Biofiltros Biofilm reactor Backwashing Nitrogen removal Remoção de azoto Organics removal Tratamento de águas residuais |
title_short |
Effect of aeration on steady-state conditions in non- and partially aerated low-loaded biofilter |
title_full |
Effect of aeration on steady-state conditions in non- and partially aerated low-loaded biofilter |
title_fullStr |
Effect of aeration on steady-state conditions in non- and partially aerated low-loaded biofilter |
title_full_unstemmed |
Effect of aeration on steady-state conditions in non- and partially aerated low-loaded biofilter |
title_sort |
Effect of aeration on steady-state conditions in non- and partially aerated low-loaded biofilter |
author |
Albuquerque, Antonio |
author_facet |
Albuquerque, Antonio Gonzalez-Martinez, A. Osorio, Francisco |
author_role |
author |
author2 |
Gonzalez-Martinez, A. Osorio, Francisco |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
uBibliorum |
dc.contributor.author.fl_str_mv |
Albuquerque, Antonio Gonzalez-Martinez, A. Osorio, Francisco |
dc.subject.por.fl_str_mv |
Aerated filter Biofiltros Biofilm reactor Backwashing Nitrogen removal Remoção de azoto Organics removal Tratamento de águas residuais |
topic |
Aerated filter Biofiltros Biofilm reactor Backwashing Nitrogen removal Remoção de azoto Organics removal Tratamento de águas residuais |
description |
Excessive growth of biomass and retention of solids associated with air bubbles lead to bed clogging, which affects the biofilters' performance. Two experiments were carried out in a submerged biofilter at the flow velocity of 0.5 m h(-1), for an organic loading rate of 51 g C m(-3) h(-1) and a nitrogen loading rate of 13 g NH4-N m(-3) h(-1), one with the biofilter not aerated, the other with the biofilter partially aerated. The results showed that the higher head losses occurred in the upper section of the biofilter, where there was a greater biomass development and a higher removal of organic carbon, ammonia and solids, with the maximum allowed head loss being reached in 16 and 8 days. In any case, the steady-state conditions were achieved after 2 days and were interrupted on the tenth day of experiment E1 and on the fifth day of experiment E2. This allowed defining different operating cycles that enabled an average organic removal rate of 12.7 g C m(-3) h(-1) (27 %) and an average ammonia removal rate of 1.1 g NH4-N m(-3) h(-1) (9 %) without aeration, and of 35.8 g C m(-3) h(-1) (76 %) and 6.3 g NH4-N m(-3) h(-1) (51 %) with aeration. Regardless of the aeration conditions, more than 90 % of TOC and NH4-N removal occurred in the upper section. After the backwashing cycle, the biofilter returned to steady-state conditions in 6 h (without aeration) and 7 h (with aeration). |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-07 2012-07-01T00:00:00Z 2014-06-30T17:36:00Z |
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://hdl.handle.net/10400.6/1958 |
url |
http://hdl.handle.net/10400.6/1958 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1735-1472 10.1007/s13762-012-0073-3 |
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.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136335737389056 |