Optimization of air micro-bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions

Detalhes bibliográficos
Autor(a) principal: Silva, Henrique Joaquim Lopes da Silva e
Data de Publicação: 2012
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/5308
Resumo: Mestrado em Tecnologias do Ambiente - Tecnologias Ambientais - Instituto Superior de Agronomia
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spelling Optimization of air micro-bubble bioreactor for the winery wastewater treatment under oxygen-limited conditionsaeration time rateair micro-bubble bioreactorCOD removal efficiencyphenol removal efficiencywinery wastewaterMestrado em Tecnologias do Ambiente - Tecnologias Ambientais - Instituto Superior de AgronomiaThe energy consumption of wastewater treatment processes had become an important tool parameter for designers and engineers in the wastewater treatment industry, and efforts to improve the energy efficiency of the equipments represent a great challenge. The present study proposes the use of the Air Micro-Bubble Bioreactor (AMBB), with a working volume of 14 dm3 and a hydraulic retention time of 14 days, operating in continuous mode to treat winery wastewater from second racking period, for seven different runs, during 167 days. The organic loads fluctuations, usual in the winemaking industry, and the aeration time rate (ATR), both related to energy costs, were the studied variables. The chemical oxygen demand (COD) was selected as a key parameter to monitor the AMBB performance. The total polyphenol compounds were also followed. The effect of the organic loading rate OLR was assessed by adjusting feed substrate concentration between 0.16-0.44 kg COD m-3 d-1. The ATR varied between 1, 5 and 15 min h-1. Each run was operated until steady state was reached with respect to COD concentration. All runs showed a positive answer for COD removal, having a minimum efficiency of 70%. Also the COD removal efficiency showed to be not dependent on the applied OLR and the decrease in the ATR to 5 min h-1 was accompanied by a nearly three-fold reduction in energy consumption without relevant changing on the final COD removal efficiency (93-96%). However, the total polyphenol compounds removal was highly affected by decreasing the ATR from 15 to 1 min h-1, leading to a decrease in the total polyphenols removal efficiency from 94% to 4%. In the present study, we report for the first time the impact of oxygen-limited conditions in the AMBB performance with emphasis on the efficiency energy use. The polyphenols as a performance indicator, the energy costs of treated wastewater and COD removal efficiency achieved in pilot scale show the technical feasibility of the process, giving a sustainable solution for this important sector of activity.ISA/UTLDuarte, Elizabeth Fernandes de AlmeidaOliveira, Maria Margarida da Costa Ferreira Correia deRepositório da Universidade de LisboaSilva, Henrique Joaquim Lopes da Silva e2013-03-08T11:30:39Z20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfhttp://hdl.handle.net/10400.5/5308engSilva, H.J.L.S. - Optimization of air micro.bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions. Lisboa: ISA, 2012, 47 p.info: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:RCAAP2023-03-06T14:36:14Zoai:www.repository.utl.pt:10400.5/5308Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:52:53.145366Repositório 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 Optimization of air micro-bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions
title Optimization of air micro-bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions
spellingShingle Optimization of air micro-bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions
Silva, Henrique Joaquim Lopes da Silva e
aeration time rate
air micro-bubble bioreactor
COD removal efficiency
phenol removal efficiency
winery wastewater
title_short Optimization of air micro-bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions
title_full Optimization of air micro-bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions
title_fullStr Optimization of air micro-bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions
title_full_unstemmed Optimization of air micro-bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions
title_sort Optimization of air micro-bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions
author Silva, Henrique Joaquim Lopes da Silva e
author_facet Silva, Henrique Joaquim Lopes da Silva e
author_role author
dc.contributor.none.fl_str_mv Duarte, Elizabeth Fernandes de Almeida
Oliveira, Maria Margarida da Costa Ferreira Correia de
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Silva, Henrique Joaquim Lopes da Silva e
dc.subject.por.fl_str_mv aeration time rate
air micro-bubble bioreactor
COD removal efficiency
phenol removal efficiency
winery wastewater
topic aeration time rate
air micro-bubble bioreactor
COD removal efficiency
phenol removal efficiency
winery wastewater
description Mestrado em Tecnologias do Ambiente - Tecnologias Ambientais - Instituto Superior de Agronomia
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01T00:00:00Z
2013-03-08T11:30:39Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/5308
url http://hdl.handle.net/10400.5/5308
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Silva, H.J.L.S. - Optimization of air micro.bubble bioreactor for the winery wastewater treatment under oxygen-limited conditions. Lisboa: ISA, 2012, 47 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv ISA/UTL
publisher.none.fl_str_mv ISA/UTL
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
_version_ 1799131004566241280

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