Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee

Detalhes bibliográficos
Autor(a) principal: Bruno, Marcelo
Data de Publicação: 2013
Outros Autores: Oliveira, Roberto A. De [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S0100-69162013000400020
http://hdl.handle.net/11449/109458
Resumo: In this study it was evaluated the efficiency of the treatment of wet-processed coffee wastewater in upflow anaerobic sludge blanket (UASB) reactors in two stages, in bench scale, followed by post-treatment with activated sludge in batch. The first UASB reactor was submitted to an hydraulic retention time (HRT) of 6.2 d and organic loading rates (OLR) of 2.3 and 4.5g CODtotal (L d)-1, and the second UASB reactor to HRT of 3.1 d with OLR of 0.4 and 1.4g CODtotal (L d)-1. The average values of the affluent CODtotal increased from 13,891 to 27,926mg L-1 and the average efficiencies of removal of the CODtotal decreased from 95 to 91%, respectively, in the UASB reactors in two stages. The volumetric methane production increased from 0.274 to 0.323L CH4 (L reactor d)-1 with increment in the OLR. The average concentrations of total phenols in the affluent were of 48 and 163mg L-1, and the removal efficiencies in the UASB reactors in two stages of 92 and 90%, respectively, and increased to 97% with post-treatment. The average values of the removal efficiencies of total nitrogen and phosphorus were of 57 to 80% and 44 to 60%, respectively, in the UASB reactors in two stages and increased to 91 and 84% with the post-treatment.
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spelling Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffeeDesempenho de reatores UASB em dois estágios seguidos de pós-tratamento com lodos ativados em batelada de águas residuárias do beneficiamento de café por via úmidadigestão anaeróbiafenóisfósforometanonitrogênioanaerobic digestionmethanenitrogenphosphorusphenolsIn this study it was evaluated the efficiency of the treatment of wet-processed coffee wastewater in upflow anaerobic sludge blanket (UASB) reactors in two stages, in bench scale, followed by post-treatment with activated sludge in batch. The first UASB reactor was submitted to an hydraulic retention time (HRT) of 6.2 d and organic loading rates (OLR) of 2.3 and 4.5g CODtotal (L d)-1, and the second UASB reactor to HRT of 3.1 d with OLR of 0.4 and 1.4g CODtotal (L d)-1. The average values of the affluent CODtotal increased from 13,891 to 27,926mg L-1 and the average efficiencies of removal of the CODtotal decreased from 95 to 91%, respectively, in the UASB reactors in two stages. The volumetric methane production increased from 0.274 to 0.323L CH4 (L reactor d)-1 with increment in the OLR. The average concentrations of total phenols in the affluent were of 48 and 163mg L-1, and the removal efficiencies in the UASB reactors in two stages of 92 and 90%, respectively, and increased to 97% with post-treatment. The average values of the removal efficiencies of total nitrogen and phosphorus were of 57 to 80% and 44 to 60%, respectively, in the UASB reactors in two stages and increased to 91 and 84% with the post-treatment.Neste trabalho, avaliou-se a eficiência do tratamento de águas residuárias do beneficiamento de café por via úmida em reatores anaeróbios de fluxo ascendente com manta de lodo (UASB), em dois estágios, em escala de bancada, seguidos de pós-tratamento com lodos ativados em batelada. O primeiro reator UASB foi submetido a tempo de detenção hidráulica (TDH) de 6,2 d e a cargas orgânicas volumétricas (COV) de 2,3 e 4,5 g DQOtotal (L d)-1, e o segundo reator UASB a TDH de 3,1 d e a COV de 0,4 e 1,4 g DQOtotal (L d)-1. Os valores médios de DQOtotal do afluente aumentaram de 13.891 para 27.926 mg L-1, e as eficiências médias de remoção de DQOtotal diminuíram de 95 para 91%, respectivamente, nos reatores UASB, em dois estágios. A produção volumétrica de metano aumentou de 0,274 para 0,323 L CH4 (L reator d)-1com o acréscimo na COV. As concentrações médias de fenóis totais no afluente foram de 48 e 163 mg L-1, e as eficiências médias de remoção nos reatores UASB em dois estágios, de 92 e 90%, respectivamente, e aumentaram para 97% com o pós-tratamento. As eficiências médias de remoção de nitrogênio e fósforo total variaram, respectivamente, de 57 a 80% e de 44 a 60% nos reatores UASB em dois estágios e aumentaram para 91 e 84% com a inclusão do pós-tratamento.UNIFEBUNIFAFIBEUNESP Departamento de Engenharia RuralUNESP Departamento de Engenharia RuralAssociação Brasileira de Engenharia Agrícola (SBEA)UNIFEBUNIFAFIBEUniversidade Estadual Paulista (Unesp)Bruno, MarceloOliveira, Roberto A. De [UNESP]2014-09-30T18:18:21Z2014-09-30T18:18:21Z2013-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article808-819application/pdfhttp://dx.doi.org/10.1590/S0100-69162013000400020Engenharia Agrícola. Associação Brasileira de Engenharia Agrícola, v. 33, n. 4, p. 808-819, 2013.0100-6916http://hdl.handle.net/11449/10945810.1590/S0100-69162013000400020S0100-69162013000400020WOS:000325275900020S0100-69162013000400020.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEngenharia Agrícola0.3870,305info:eu-repo/semantics/openAccess2023-10-06T06:04:07Zoai:repositorio.unesp.br:11449/109458Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:09:18.962873Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee
Desempenho de reatores UASB em dois estágios seguidos de pós-tratamento com lodos ativados em batelada de águas residuárias do beneficiamento de café por via úmida
title Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee
spellingShingle Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee
Bruno, Marcelo
digestão anaeróbia
fenóis
fósforo
metano
nitrogênio
anaerobic digestion
methane
nitrogen
phosphorus
phenols
title_short Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee
title_full Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee
title_fullStr Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee
title_full_unstemmed Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee
title_sort Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee
author Bruno, Marcelo
author_facet Bruno, Marcelo
Oliveira, Roberto A. De [UNESP]
author_role author
author2 Oliveira, Roberto A. De [UNESP]
author2_role author
dc.contributor.none.fl_str_mv UNIFEB
UNIFAFIBE
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Bruno, Marcelo
Oliveira, Roberto A. De [UNESP]
dc.subject.por.fl_str_mv digestão anaeróbia
fenóis
fósforo
metano
nitrogênio
anaerobic digestion
methane
nitrogen
phosphorus
phenols
topic digestão anaeróbia
fenóis
fósforo
metano
nitrogênio
anaerobic digestion
methane
nitrogen
phosphorus
phenols
description In this study it was evaluated the efficiency of the treatment of wet-processed coffee wastewater in upflow anaerobic sludge blanket (UASB) reactors in two stages, in bench scale, followed by post-treatment with activated sludge in batch. The first UASB reactor was submitted to an hydraulic retention time (HRT) of 6.2 d and organic loading rates (OLR) of 2.3 and 4.5g CODtotal (L d)-1, and the second UASB reactor to HRT of 3.1 d with OLR of 0.4 and 1.4g CODtotal (L d)-1. The average values of the affluent CODtotal increased from 13,891 to 27,926mg L-1 and the average efficiencies of removal of the CODtotal decreased from 95 to 91%, respectively, in the UASB reactors in two stages. The volumetric methane production increased from 0.274 to 0.323L CH4 (L reactor d)-1 with increment in the OLR. The average concentrations of total phenols in the affluent were of 48 and 163mg L-1, and the removal efficiencies in the UASB reactors in two stages of 92 and 90%, respectively, and increased to 97% with post-treatment. The average values of the removal efficiencies of total nitrogen and phosphorus were of 57 to 80% and 44 to 60%, respectively, in the UASB reactors in two stages and increased to 91 and 84% with the post-treatment.
publishDate 2013
dc.date.none.fl_str_mv 2013-08-01
2014-09-30T18:18:21Z
2014-09-30T18:18:21Z
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/10.1590/S0100-69162013000400020
Engenharia Agrícola. Associação Brasileira de Engenharia Agrícola, v. 33, n. 4, p. 808-819, 2013.
0100-6916
http://hdl.handle.net/11449/109458
10.1590/S0100-69162013000400020
S0100-69162013000400020
WOS:000325275900020
S0100-69162013000400020.pdf
url http://dx.doi.org/10.1590/S0100-69162013000400020
http://hdl.handle.net/11449/109458
identifier_str_mv Engenharia Agrícola. Associação Brasileira de Engenharia Agrícola, v. 33, n. 4, p. 808-819, 2013.
0100-6916
10.1590/S0100-69162013000400020
S0100-69162013000400020
WOS:000325275900020
S0100-69162013000400020.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Engenharia Agrícola
0.387
0,305
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 808-819
application/pdf
dc.publisher.none.fl_str_mv Associação Brasileira de Engenharia Agrícola (SBEA)
publisher.none.fl_str_mv Associação Brasileira de Engenharia Agrícola (SBEA)
dc.source.none.fl_str_mv SciELO
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_ 1808128323184754688

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