2010
DOI: 10.1590/s0100-69162010000100017
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Influência de nitrogênio amoniacal e vazão de ar no processo de nitrificação, etapa de tratamento de efluente de abatedouro de peixe

Abstract: RESUMO: O efluente proveniente de abatedouro de peixes possui alto teor de nitrogênio, um dos principais causadores de eutrofização nos corpos d'água. Sua remoção pode ser feita em duas etapas separadas: nitrificação e desnitrificação. Este experimento teve como objetivo testar a influência da vazão de ar (valores de 1 a 3 L min -1 ) e a concentração de nitrogênio amoniacal (de 40 a 100 mg L -1 ) no processo de nitrificação. Foi utilizado um reator em batelada sequencial com biomassa imobilizada, com volume út… Show more

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Cited by 7 publications
(4 citation statements)
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“…In poorly aerated tanks, denitrification could cause fish death. In addition, the smaller the amount of ammonia, the faster the microorganisms consume the compound and convert it to nitrate (Andrade et al, 2010).…”
Section: Resultsmentioning
confidence: 99%
“…In poorly aerated tanks, denitrification could cause fish death. In addition, the smaller the amount of ammonia, the faster the microorganisms consume the compound and convert it to nitrate (Andrade et al, 2010).…”
Section: Resultsmentioning
confidence: 99%
“…High concentrations of organic matter afford favorable conditions for the development of heterotrophic microorganisms, which compete with the autotrophic nitrifying organisms for oxygen and nutrients (FIGUEROA & SILVERSTEIN, 1992). ANDRADE et al (2010) evaluated the factors air flow and concentration of ammoniacal N in the nitrification of the effluent of a fish processing plant using SBR with HRT of 24 h, and concluded through monitoring of nitrogen forms that 16 h was sufficient for nitrification to occur in the best conditions that were evaluated. During the essays, parameters such as temperature, pH, redox potential, and salinity, were also monitored, because they can influence the nitrification and denitrification processes.…”
Section: Resultsmentioning
confidence: 99%
“…When it comes to nutrient removal, when using an aerobic reactor (Chart 2) to analyze the efficiency in the conversion of ammoniacal nitrogen to nitrate in effluent from fish slaughterhouses, Andrade et al (2010) Riaño et al (2011) point out that microalgae-based process can also be applied in the treatment of effluents from fish processing using photo-bioreactors (Chart 2); these authors were able to achieve NT removal of 95% and PT of 74%, in addition to the reduction of carbon dioxide emissions.…”
Section: Meios a Serem Substituídosmentioning
confidence: 99%