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 | Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
04/12/2017 |
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Data da última atualização: |
04/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ASSIS, T. M. de; SCHLICHITING, M. V.; LOPES, C. L.; KUNZ, A.; GOMES, S. D. |
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Afiliação: |
TATIANE MARTINS DE ASSIS, UNIOESTE/Cascavel; MARCOS VINICIUS SCHLICHITING, UNIOESTE/Cascavel; CARLA LIMBERGER LOPES, UNIOESTE/Cascavel; AIRTON KUNZ, CNPSA; SIMONE DAMASCENO GOMES, UNIOESTE/Cascavel. |
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Título: |
Stability of partial nitritation of poultry slaughterhouse wastewater in a sequential batch reactor. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Engenharia Agrícola, v. 37, p. 323-332, 2017. |
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DOI: |
10.1590/1809-4430 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: The aim of this study was to monitor the stabilization of a sequential batch reactor (SBR) regarding the partial nitritation of poultry slaughterhouse wastewater, aiming at preparing it for a reactor with bacteria that promote anaerobic ammonia oxidation (anammox). A cylindrical reactor with a useful volume of 3.5 L, mechanical agitation (50 rpm), and suspended biomass was used in the experiment. The strategies adopted for nitrite-oxidizing bacteria (NOB) inhibition were cycle time (CT: 24, 16, 6, 5, 4 h and real-time monitoring), free ammonia accumulation, alkalinity restriction and low concentrations of dissolved oxygen (DO). The ammonification process, observed at all experimental phases, negatively influenced the control of partial nitritation process. Alkalinity restriction under low cycle times (4 and 5 h) conditions, together with low dissolved oxygen concentration, was a key factor for nitrite-oxidizing bacteria inhibition. Stability of partial nitritation was only reached by real-time monitoring, being the cycles stopped when 50% N?NH4 + and 50% N?NO2 − were present in the reactor. |
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Palavras-Chave: |
Anammox. |
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Thesagro: |
Dejeto; Meio ambiente; Tecnologia agrícola. |
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Categoria do assunto: |
-- |
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Marc: |
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001 2081289
005 2017-12-04
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1590/1809-4430$2DOI
100 1 $aASSIS, T. M. de
245 $aStability of partial nitritation of poultry slaughterhouse wastewater in a sequential batch reactor.$h[electronic resource]
260 $c2017
520 $aABSTRACT: The aim of this study was to monitor the stabilization of a sequential batch reactor (SBR) regarding the partial nitritation of poultry slaughterhouse wastewater, aiming at preparing it for a reactor with bacteria that promote anaerobic ammonia oxidation (anammox). A cylindrical reactor with a useful volume of 3.5 L, mechanical agitation (50 rpm), and suspended biomass was used in the experiment. The strategies adopted for nitrite-oxidizing bacteria (NOB) inhibition were cycle time (CT: 24, 16, 6, 5, 4 h and real-time monitoring), free ammonia accumulation, alkalinity restriction and low concentrations of dissolved oxygen (DO). The ammonification process, observed at all experimental phases, negatively influenced the control of partial nitritation process. Alkalinity restriction under low cycle times (4 and 5 h) conditions, together with low dissolved oxygen concentration, was a key factor for nitrite-oxidizing bacteria inhibition. Stability of partial nitritation was only reached by real-time monitoring, being the cycles stopped when 50% N?NH4 + and 50% N?NO2 − were present in the reactor.
650 $aDejeto
650 $aMeio ambiente
650 $aTecnologia agrícola
653 $aAnammox
700 1 $aSCHLICHITING, M. V.
700 1 $aLOPES, C. L.
700 1 $aKUNZ, A.
700 1 $aGOMES, S. D.
773 $tEngenharia Agrícola$gv. 37, p. 323-332, 2017.
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Embrapa Suínos e Aves (CNPSA) |
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| 1. |  | BARBOSA, C. M. P.; GONZALEZ, L. R.; CAÇÃO, M. M. de F.; BRITO, J. de J.; SILVA FILHO, O. C. da; PORFIRIO-DA-SILVA, V. Danos causados por ovelhas em árvores de eucalipto em um sistema silvipastoril distribuido em dois modelos espaciais. In: SIMPÓSIO INTERNACIONAL DE ARBORIZAÇÃO DE PASTAGENS EM REGIOES SUBTROPICAIS, 1., 2013, Colombo. Anais. Colombo: Embrapa Florestas, 2014. p. 48-56. (Embrapa Florestas. Documentos, 268).| Tipo: Artigo em Anais de Congresso |
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