<b>Evaluation of nitrite accumulation in biological treatment systems, aiming at shortcut denitrification</b> - doi: 10.4025/actascitechnol.v34i3.10798

Authors

  • André Luiz Hossaka Universidade Estadual de Londrina - UEL
  • Fernando Fernandes Universidade Estadual de Londrina
  • Sandra Márcia Cesário Pereira da Silva Universidade Estadual de Londrina
  • Deize Dias Lopes Universidade Estadual de Londrina

DOI:

https://doi.org/10.4025/actascitechnol.v34i3.10798

Keywords:

nitrogen removal, leachate, sanitary landfill

Abstract

Biological treatment of landfill leachate faces some difficulties by influence of some physical and chemical characteristics of this sort of effluent, which usually presents high levels of nitrogen - mainly ammonia nitrogen. High concentrations of ammonia nitrogen restrain biodegradation, requiring the nitrogen removal along with landfill leachate treatment in these cases. This work evaluated the nitrite formation in a pilot-scale biological treatment system applied to landfill leachate, aiming at posterior nitrogen removal by shortcut denitrification. Two pilot-scale units (250 L aeration tanks) were monitored simultaneously for 100 days. HRT in both cases was 5 days. Leachate applied on this experimental device was collected in a solid waste landfill in the city of Londrina, Paraná State. That landfill is active since 1972. In the operational conditions observed during this experiment, most of nitrogen removal occurred by ammonia volatilization. Anyway, nitrite formation was obtained in the pilot-scale units and nitrate remained at low levels.

 

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Author Biographies

André Luiz Hossaka, Universidade Estadual de Londrina - UEL

Centro de Tecnologia e Urbanismo / Universidade Estadual de Londrina

Fernando Fernandes, Universidade Estadual de Londrina

Centro de Tecnologia e Urbanismo / Universidade Estadual de Londrina

Sandra Márcia Cesário Pereira da Silva, Universidade Estadual de Londrina

Centro de Tecnologia e Urbanismo / Universidade Estadual de Londrina

Deize Dias Lopes, Universidade Estadual de Londrina

Centro de Tecnologia e Urbanismo / Universidade Estadual de Londrina

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Published

2012-02-15

How to Cite

Hossaka, A. L., Fernandes, F., Silva, S. M. C. P. da, & Lopes, D. D. (2012). <b>Evaluation of nitrite accumulation in biological treatment systems, aiming at shortcut denitrification</b> - doi: 10.4025/actascitechnol.v34i3.10798. Acta Scientiarum. Technology, 34(3), 261–267. https://doi.org/10.4025/actascitechnol.v34i3.10798

Issue

Vol. 34 No. 3 (2012)

Section

Civil Engineering

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