Performance of Combined Anaerobic-Aerobic System in Removal of Nitrogen in the Treatment of Sanitary Sewage

Performance of Combined Anaerobic-Aerobic System in Removal of Nitrogen in the Treatment of Sanitary Sewage

Authors

  • Mário Luiz Rodrigues Foco Universidade Estadual de Campinas
  • Edson Aparecido Abdul Nour Universidade Estadual de Campinas

DOI:

https://doi.org/10.5433/1679-0375.2014v35n2p131

Keywords:

Anaerobic Filters, Aerated Submerged Biofilter, Nitrification, Sewage, Attached Biomass

Abstract

This paper describes the evaluation of the performance of an anaerobic-aerobic system, consisting of anaerobic filter (AF) followed by biological aerated filter (BAF), operated with and without recirculation of treated effluent to mitigate the adverse effects of organic concentrations on nitrification and promote the removal of Total Nitrogen in anoxic ambient. In the first two steps, the application of the organic loading rate (OLR) on BAF ranged from 0.49 ± 0.27 and 0.31 ± 0.08 kg BOD m-3 d-1 due to the reduction of surface application rate of 60 to 44 m3 m-2 d-1. In the third stage, with recirculation, OLR and surface application rate were 0.29 ± 0.02 kg BOD m-3 d-1 and 65.8 m3 m-2 d-1, allowing the system to reduce 43 ± 10% of average initial concentration of 72 mg L-1 Total Nitrogen. The application of organic loading rates in BAS, more than 0.30 kg BOD m-3 d-1 inhibited nitrification due to competition for oxygen.

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Author Biographies

Mário Luiz Rodrigues Foco, Universidade Estadual de Campinas

Tecnólogo em Saneamento Básico (UNICAMP), Mestre e Doutorando em Saneamento e Ambiente pela Faculdade de Engenharia Civil, Arquitetura e Urbanismo (UNICAMP)

 

Edson Aparecido Abdul Nour, Universidade Estadual de Campinas

Engenheiro de Alimentos (UNICAMP), Tecnólogo em Saneamento (UNICAMP), Mestre em Engenharia Civil (UNICAMP), Doutor em Hidráulica e Saneamento (EESC/USP). Atualmente é professor Associado do Depto. de Saneamento e Ambiente da FEC/UNICAMP

Published

2014-10-20

How to Cite

Foco, M. L. R., & Nour, E. A. A. (2014). Performance of Combined Anaerobic-Aerobic System in Removal of Nitrogen in the Treatment of Sanitary Sewage. Semina: Ciências Exatas E Tecnológicas, 35(2), 131–138. https://doi.org/10.5433/1679-0375.2014v35n2p131

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Original Article
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