Remoção de nitrogênio via processo de desamonificação utilizando-se diferentes configurações de reatores

Detalhes bibliográficos
Autor(a) principal: Chini, Angélica
Data de Publicação: 2015
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações do UNIOESTE
Texto Completo: http://tede.unioeste.br:8080/tede/handle/tede/2673
Resumo: Nitrogen is an essential nutrient for the survival of living organisms, and although abundant as a gas (N₂), it is largely inaccessible in this form to most beings. Nitrogen only becomes accessible when converted into, for example, ammonia, nitrite and nitrate. These substances can be found in high concentrations in effluents, such as swine wastewater, generating a high concentration of nutrients, which may cause damage to the environment and to public health. Biological processes are widely used to remove high nutrients loads. In this context, anammox, partial nitritation (PN) and their combination, as deammonification, are being studied for nitrogen removal. The deammonification consists in ammonia oxidation by PN and that generates substrate to anammox activity; therefore, it must have partial nitrification control to prevent nitrite accumulation. The nitrite concentration in the reactor can inhibit the anammox process, which can be controlled with different strategies, such as aeration and reactor configuration. Considering this, the present study aimed to evaluate two reactors configurations suspended and expanded sludge, for reactor configuration evaluation on deammonification process. For this, two up flow reactors were used with intermittent feeding and aeration at 30 min cycles (15 min on/ 15 min off), one with suspended and the other with expanded bed. These possess working volume of 1 L, 55 g (w/v) of biofilm plastic carrier, the temperature was maintained at 25 °C, HRT 9 h, circulation input flow rate of 2.70 L.d⁻¹ and recirculation flow rate was 2.5 times the input and it was fed with synthetic medium. It was possible to establish deammonification process in the two reactors and the experiments were carried out: phase I and III were unstable (air flow rate of 30 mL.min⁻¹.L⁻¹) and phase II was stable (air flow rate of 20 mL.min⁻¹.L⁻¹). Thus, in the tested process conditions, it was inferred that the ideal air flow rate was of 20 mL.min⁻¹.L⁻¹. The expanded biomass reactor configuration achieved better nitrogen removal efficiencies, being 1.23 more efficient than suspended bed, thus being considered the best option for the process under study. In the anammox and nitrifying quantification, there were no significant changes in the suspended bed reactor, only nitrifying growth in phase III. For the expanded bed reactor, anammox bacteria increased in phase II. The results showed that the expanded bed reactor presented a performance 23.06% more efficient than the suspended bed reactor.
id UNIOESTE-1_4295d1d8998de0501482b1a262961f08
oai_identifier_str oai:tede.unioeste.br:tede/2673
network_acronym_str UNIOESTE-1
network_name_str Biblioteca Digital de Teses e Dissertações do UNIOESTE
repository_id_str
spelling Kunz, AirtonCPF:48699268068http://lattes.cnpq.br/0003350901000829Mello, Eloy Lemos deCPF:02131113900http://lattes.cnpq.br/2106300099734952Viancelli, AlineCPF:05220565982http://lattes.cnpq.br/1177756678285550CPF:07642862938http://lattes.cnpq.br/2155011622229314Chini, Angélica2017-07-10T19:23:57Z2016-01-282015-02-13CHINI, Angélica. Nitrogen removal via deammonification process using different reactors configurations. 2015. 79 f. Dissertação (Mestrado em Engenharia) - Universidade Estadual do Oeste do Parana, Cascavel, 2015.http://tede.unioeste.br:8080/tede/handle/tede/2673Nitrogen is an essential nutrient for the survival of living organisms, and although abundant as a gas (N₂), it is largely inaccessible in this form to most beings. Nitrogen only becomes accessible when converted into, for example, ammonia, nitrite and nitrate. These substances can be found in high concentrations in effluents, such as swine wastewater, generating a high concentration of nutrients, which may cause damage to the environment and to public health. Biological processes are widely used to remove high nutrients loads. In this context, anammox, partial nitritation (PN) and their combination, as deammonification, are being studied for nitrogen removal. The deammonification consists in ammonia oxidation by PN and that generates substrate to anammox activity; therefore, it must have partial nitrification control to prevent nitrite accumulation. The nitrite concentration in the reactor can inhibit the anammox process, which can be controlled with different strategies, such as aeration and reactor configuration. Considering this, the present study aimed to evaluate two reactors configurations suspended and expanded sludge, for reactor configuration evaluation on deammonification process. For this, two up flow reactors were used with intermittent feeding and aeration at 30 min cycles (15 min on/ 15 min off), one with suspended and the other with expanded bed. These possess working volume of 1 L, 55 g (w/v) of biofilm plastic carrier, the temperature was maintained at 25 °C, HRT 9 h, circulation input flow rate of 2.70 L.d⁻¹ and recirculation flow rate was 2.5 times the input and it was fed with synthetic medium. It was possible to establish deammonification process in the two reactors and the experiments were carried out: phase I and III were unstable (air flow rate of 30 mL.min⁻¹.L⁻¹) and phase II was stable (air flow rate of 20 mL.min⁻¹.L⁻¹). Thus, in the tested process conditions, it was inferred that the ideal air flow rate was of 20 mL.min⁻¹.L⁻¹. The expanded biomass reactor configuration achieved better nitrogen removal efficiencies, being 1.23 more efficient than suspended bed, thus being considered the best option for the process under study. In the anammox and nitrifying quantification, there were no significant changes in the suspended bed reactor, only nitrifying growth in phase III. For the expanded bed reactor, anammox bacteria increased in phase II. The results showed that the expanded bed reactor presented a performance 23.06% more efficient than the suspended bed reactor.O nitrogênio é um dos nutrientes essenciais para a sobrevivência dos organismos vivos e, embora abundante como gás (N₂), é em grande parte inacessível nesta forma à maioria dos organismos. O nitrogênio só se torna acessível quando convertido em, por exemplo, amônia, nitrito e nitrato. Substâncias essas que são encontradas em elevadas concentrações em efluentes, como os da suinocultura, gerando uma elevada concentração de nutrientes,que podem causar danos ao meio ambiente e à saúde pública. Para a remoção de elevadas cargas de nutrientes, os processos biológicos são amplamente utilizados. Assim, os processos anammox, nitritação parcial e seus sistemas combinados, como a desamonificação, estão sendo estudados para a remoção do nitrogênio. A desamonificação consiste na oxidação da amônia pela nitritação parcial (NP), gerando substrato para as bactérias com atividade anammox. Por isso, é necessário que ocorra controle rigoroso da NP a fim de evitar acúmulo de nitrito. O controle da produção de nitrito, a qual pode inibir as bactérias com atividade anammox,pode ser de várias formas, como, por exemplo, estratégias de aeração e configuração de reatores. Considerando estes aspectos, propõe-se estudar duas configurações de reatores, biomassa suspensa e biomassa expandida, com o intuito de avaliar a influência destas configurações em relação ao processo de desamonificação. Para isto, foram utilizados dois reatores de fluxo ascendente, com alimentação e aeração intermitente em ciclos de 30 min (sendo alimentação e aeração ligadas por 15 min e desligadas por 15 min), um com leito suspenso e outro expandido. Reatores com volume útil de 1L e 55 g (v/v) de meio suporte, temperatura mantida em 25 °C, TRH de 9 h, vazão de alimentação de 2,70 L.d⁻¹ e a de recirculação foi 2,5 vezes a de entrada. Os reatores foram alimentados com meio de cultura sintético contendo nitrogênio amoniacal total na faixa de 300 mgN.L⁻¹. A partir disso, foi possível estabelecer o processo de desamonificação nos dois reatores com vazões de ar de 20 e 30 mL.min⁻¹.L⁻¹, em três diferentes fases. As fases I e III foram instáveis (vazão de ar de 30 mL.min⁻¹.L⁻¹), ao passo que a fase II foi estável (vazão de ar de 20 mL.min⁻¹.L⁻¹). Dessa maneira, nas condições de processo testadas, inferiu-se que a vazão de ar de 20 mL.min⁻¹.L⁻¹ é a ideal. A configuração de reator de biomassa expandida obteve melhores resultados na remoção de nitrogênio, tendo 1,23 vezes maior eficiência do que o de biomassa suspensa. Assim sendo, o reator de leito expandido se mostrou a melhor opção para o processo estudado. Já na quantificação de biomassa anammox e nitrificante, não houve alterações significativas no reator de leito suspenso, somente crescimento de bactéria nitrificante na fase III. O reator de leito expandido, além disto, também apresentou crescimento de bactérias com atividade anammox na fase II. Os resultados evidenciaram que o reator de leito expandido teve um desempenho 23,06% superior ao de leito suspensoMade available in DSpace on 2017-07-10T19:23:57Z (GMT). No. of bitstreams: 1 Angelica _Chini.pdf: 1719142 bytes, checksum: cacffbf4d6a7bd7dd87a559756ed1238 (MD5) Previous issue date: 2015-02-13application/pdfporUniversidade Estadual do Oeste do ParanaPrograma de Pós-Graduação "Stricto Sensu" em Engenharia AgrícolaUNIOESTEBREngenhariaanammoxconfiguração de reatornitritação parcialReator únicoanammoxpartial nitrificationreactor configuration single reactorCNPQ::CIENCIAS AGRARIASRemoção de nitrogênio via processo de desamonificação utilizando-se diferentes configurações de reatoresNitrogen removal via deammonification process using different reactors configurationsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UNIOESTEinstname:Universidade Estadual do Oeste do Paraná (UNIOESTE)instacron:UNIOESTEORIGINALAngelica _Chini.pdfapplication/pdf1719142http://tede.unioeste.br:8080/tede/bitstream/tede/2673/1/Angelica+_Chini.pdfcacffbf4d6a7bd7dd87a559756ed1238MD51tede/26732017-07-10 16:23:57.318oai:tede.unioeste.br:tede/2673Biblioteca Digital de Teses e Dissertaçõeshttp://tede.unioeste.br/PUBhttp://tede.unioeste.br/oai/requestbiblioteca.repositorio@unioeste.bropendoar:2017-07-10T19:23:57Biblioteca Digital de Teses e Dissertações do UNIOESTE - Universidade Estadual do Oeste do Paraná (UNIOESTE)false
dc.title.por.fl_str_mv Remoção de nitrogênio via processo de desamonificação utilizando-se diferentes configurações de reatores
dc.title.alternative.eng.fl_str_mv Nitrogen removal via deammonification process using different reactors configurations
title Remoção de nitrogênio via processo de desamonificação utilizando-se diferentes configurações de reatores
spellingShingle Remoção de nitrogênio via processo de desamonificação utilizando-se diferentes configurações de reatores
Chini, Angélica
anammox
configuração de reator
nitritação parcial
Reator único
anammox
partial nitrification
reactor configuration single reactor
CNPQ::CIENCIAS AGRARIAS
title_short Remoção de nitrogênio via processo de desamonificação utilizando-se diferentes configurações de reatores
title_full Remoção de nitrogênio via processo de desamonificação utilizando-se diferentes configurações de reatores
title_fullStr Remoção de nitrogênio via processo de desamonificação utilizando-se diferentes configurações de reatores
title_full_unstemmed Remoção de nitrogênio via processo de desamonificação utilizando-se diferentes configurações de reatores
title_sort Remoção de nitrogênio via processo de desamonificação utilizando-se diferentes configurações de reatores
author Chini, Angélica
author_facet Chini, Angélica
author_role author
dc.contributor.advisor1.fl_str_mv Kunz, Airton
dc.contributor.advisor1ID.fl_str_mv CPF:48699268068
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/0003350901000829
dc.contributor.referee1.fl_str_mv Mello, Eloy Lemos de
dc.contributor.referee1ID.fl_str_mv CPF:02131113900
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/2106300099734952
dc.contributor.referee2.fl_str_mv Viancelli, Aline
dc.contributor.referee2ID.fl_str_mv CPF:05220565982
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/1177756678285550
dc.contributor.authorID.fl_str_mv CPF:07642862938
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/2155011622229314
dc.contributor.author.fl_str_mv Chini, Angélica
contributor_str_mv Kunz, Airton
Mello, Eloy Lemos de
Viancelli, Aline
dc.subject.por.fl_str_mv anammox
configuração de reator
nitritação parcial
Reator único
topic anammox
configuração de reator
nitritação parcial
Reator único
anammox
partial nitrification
reactor configuration single reactor
CNPQ::CIENCIAS AGRARIAS
dc.subject.eng.fl_str_mv anammox
partial nitrification
reactor configuration single reactor
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS AGRARIAS
description Nitrogen is an essential nutrient for the survival of living organisms, and although abundant as a gas (N₂), it is largely inaccessible in this form to most beings. Nitrogen only becomes accessible when converted into, for example, ammonia, nitrite and nitrate. These substances can be found in high concentrations in effluents, such as swine wastewater, generating a high concentration of nutrients, which may cause damage to the environment and to public health. Biological processes are widely used to remove high nutrients loads. In this context, anammox, partial nitritation (PN) and their combination, as deammonification, are being studied for nitrogen removal. The deammonification consists in ammonia oxidation by PN and that generates substrate to anammox activity; therefore, it must have partial nitrification control to prevent nitrite accumulation. The nitrite concentration in the reactor can inhibit the anammox process, which can be controlled with different strategies, such as aeration and reactor configuration. Considering this, the present study aimed to evaluate two reactors configurations suspended and expanded sludge, for reactor configuration evaluation on deammonification process. For this, two up flow reactors were used with intermittent feeding and aeration at 30 min cycles (15 min on/ 15 min off), one with suspended and the other with expanded bed. These possess working volume of 1 L, 55 g (w/v) of biofilm plastic carrier, the temperature was maintained at 25 °C, HRT 9 h, circulation input flow rate of 2.70 L.d⁻¹ and recirculation flow rate was 2.5 times the input and it was fed with synthetic medium. It was possible to establish deammonification process in the two reactors and the experiments were carried out: phase I and III were unstable (air flow rate of 30 mL.min⁻¹.L⁻¹) and phase II was stable (air flow rate of 20 mL.min⁻¹.L⁻¹). Thus, in the tested process conditions, it was inferred that the ideal air flow rate was of 20 mL.min⁻¹.L⁻¹. The expanded biomass reactor configuration achieved better nitrogen removal efficiencies, being 1.23 more efficient than suspended bed, thus being considered the best option for the process under study. In the anammox and nitrifying quantification, there were no significant changes in the suspended bed reactor, only nitrifying growth in phase III. For the expanded bed reactor, anammox bacteria increased in phase II. The results showed that the expanded bed reactor presented a performance 23.06% more efficient than the suspended bed reactor.
publishDate 2015
dc.date.issued.fl_str_mv 2015-02-13
dc.date.available.fl_str_mv 2016-01-28
dc.date.accessioned.fl_str_mv 2017-07-10T19:23:57Z
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.citation.fl_str_mv CHINI, Angélica. Nitrogen removal via deammonification process using different reactors configurations. 2015. 79 f. Dissertação (Mestrado em Engenharia) - Universidade Estadual do Oeste do Parana, Cascavel, 2015.
dc.identifier.uri.fl_str_mv http://tede.unioeste.br:8080/tede/handle/tede/2673
identifier_str_mv CHINI, Angélica. Nitrogen removal via deammonification process using different reactors configurations. 2015. 79 f. Dissertação (Mestrado em Engenharia) - Universidade Estadual do Oeste do Parana, Cascavel, 2015.
url http://tede.unioeste.br:8080/tede/handle/tede/2673
dc.language.iso.fl_str_mv por
language por
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 Universidade Estadual do Oeste do Parana
dc.publisher.program.fl_str_mv Programa de Pós-Graduação "Stricto Sensu" em Engenharia Agrícola
dc.publisher.initials.fl_str_mv UNIOESTE
dc.publisher.country.fl_str_mv BR
dc.publisher.department.fl_str_mv Engenharia
publisher.none.fl_str_mv Universidade Estadual do Oeste do Parana
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações do UNIOESTE
instname:Universidade Estadual do Oeste do Paraná (UNIOESTE)
instacron:UNIOESTE
instname_str Universidade Estadual do Oeste do Paraná (UNIOESTE)
instacron_str UNIOESTE
institution UNIOESTE
reponame_str Biblioteca Digital de Teses e Dissertações do UNIOESTE
collection Biblioteca Digital de Teses e Dissertações do UNIOESTE
bitstream.url.fl_str_mv http://tede.unioeste.br:8080/tede/bitstream/tede/2673/1/Angelica+_Chini.pdf
bitstream.checksum.fl_str_mv cacffbf4d6a7bd7dd87a559756ed1238
bitstream.checksumAlgorithm.fl_str_mv MD5
repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações do UNIOESTE - Universidade Estadual do Oeste do Paraná (UNIOESTE)
repository.mail.fl_str_mv biblioteca.repositorio@unioeste.br
_version_ 1811723373871366144