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Master's Dissertation
DOI
https://doi.org/10.11606/D.18.2009.tde-13082009-132238
Document
Author
Full name
Ana Flávia Vieira Pontes
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2009
Supervisor
Committee
Zaiat, Marcelo (President)
Del Nery, Valéria
Pessôa, Sávia Gavazza dos Santos
Title in Portuguese
Avaliação de desempenho de reator anaeróbio-aeróbio com recirculação da fase líquida no tratamento de água residuária proveniente de abatedouro de aves
Keywords in Portuguese
Abatedouro de aves
Biomassa imobilizada
Compostos nitrogenados
Óleos e graxas
Reator anaeróbio/aeróbio
Abstract in Portuguese
Este trabalho buscou avaliar o desempenho de um reator de leito fixo e escoamento ascendente, operado de modo contínuo, com argila expandida e espuma de poliuretano como suportes para imobilização da biomassa, no tratamento de água residuária proveniente de abatedouro de aves. Na primeira fase do trabalho, o reator foi operado em condição anaeróbia e anaeróbia-aeróbia, no tratamento da água residuária bruta proveniente do abatedouro. No entanto, sua eficiência na redução de matéria orgânica pode ser atribuída a processos de adsorção e não biodegradação, o que resultou em períodos de operação curtos devido à obstrução do leito reacional. Na segunda fase, o reator foi alimentado com água residuária coletada após o pré-tratamento por sistema de flotação por ar dissolvido (FAD), realizado no próprio abatedouro, com intuito de minimizar a carga lipídica e a concentração de sólidos na entrada do reator. Assim, a vida útil do reator foi prolongada, com eficiências médias de remoção de DQO e nitrogênio total de 90 '+ OU -' 4% e 44 '+ OU -' 10%, respectivamente, e eficiência de desnitrificação de 89 '+ OU -' 6%, para o reator anaeróbio-aeróbio com razão de recirculação do efluente líquido igual a 1,5. Assim, o reator demonstrou bom desempenho na remoção simultânea de matéria orgânica e nutrientes, desde que seja precedido por sistema de pré-tratamento para remoção parcial de sólidos e óleos e graxas.
Title in English
Performance evaluation of an anaerobic-aerobic reactor with recycle of the liquid phase for treatment of poultry slaughterhouse wastewater
Keywords in English
Anaerobic-aerobic
Immobilized biomass
Nitrogen
Oil and grease
Poultry slaughterhouse
Abstract in English
This work aimed to evaluate the performance of an up-flow fixed bed reactor, operated in a continuous way, using expanded clay and polyurethane foam as supports for immobilization of the biomass, for treatment of poultry slaughterhouse wastewater. Initially, the reactor was operated under anaerobic and anaerobic-aerobic conditions for the treatment of poultry slaughterhouse wastewater. However, the COD removal efficiency was related to adsorption and not to biodegradation processes. In this way, the operational periods were short due to solids retention in the system. In the second part of this work, trying to reduce the lipids and solids concentration in the reactor's affluent, the wastewater was collected after a pre-treatment installed at the poultry slaughterhouse. This pre-treatment was constituted of a dissolved air flotation (DAF) system. As a result, the operational longevity of the reactor was increased and the COD and total nitrogen removal efficiencies were 90 '+ OU -' 4% and 44 '+ OU -' 10% respectively, and the denitrification efficiency was 89 '+ OU -' 6% under an anaerobic-aerobic condition with a recycle ratio of the liquid phase of 1,5. Therefore, the reactor showed a good performance in reducing the organic matter and removing nutrients simultaneously, since it is preceded by a pre-treatment for the partial removal of solids, oils and grease.
 
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AnaFlaviaPontes.pdf (4.88 Mbytes)
Publishing Date
2009-08-25
 
WARNING: The material described below relates to works resulting from this thesis or dissertation. The contents of these works are the author's responsibility.
  • PONTES, A F V, e ZAIAT, M. Avaliação da Influência do Material Suporte no Desempenho de Reator Anaeróbio Horizontal de Leito Fixo. In IX Taller y Simposio Latinoamericano de Digestión Anaerobia, ILha de Páscoa, 2008. Memorias., 2008.
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