<b>Biological systems combined for the treatment of coffee processing wastewater: II - Removal of nutrients and phenolic compounds</b> - doi: 10.4025/actascitechnol.v35i3.13628

Authors

  • Ronaldo Fia Universidade Federal de Lavras
  • Antonio Teixeira de Matos Universidade Federal de Viçosa
  • Fátima Resende Luiz Fia Universidade Federal de Lavras

DOI:

https://doi.org/10.4025/actascitechnol.v35i3.13628

Keywords:

anaerobic reactor, constructed wetland systems, phenols, nitrogen, phosphorus, coffee

Abstract

Three treatment systems consisting of anaerobic filters with upward flow followed by constructed wetland systems (CW) were evaluated for the removal of nutrients and phenolic compounds, in the treatment of coffee processing wastewater (WCP) in Viçosa, Minas Gerais State. Filters were made of PVC (1.5 m high and 0.35 m diameter) filled with gravel # 2 and CW were made of wooden boxes (1.5 m long, 0.4 m high and 0.5 m wide) sealed by HDPE geomembrane and filled with gravel `zero´. The WCP had the pH adjusted with lime to values close to 7.0 and the nutrient concentration changed to obtain a BOD/N/P ratio of 100/5/1. As a result, hydraulic retention times longer than 160 h in all treatment systems during phase III had not promoted greater efficiencies for removal compared with the phase I, because the recovery time of the systems was inadequate. The F1+CW1 system that received the lowest organic load, showed a satisfactory performance with regard to the removal of nutrients (above 50%).

 

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Author Biography

Ronaldo Fia, Universidade Federal de Lavras

tem experiência na área de Engenharia Agrí­cola e Engenharia Ambiental, atuando principalmente nos seguintes temas: Qualidade de água; Tratamento de águas residuárias e resí­duos sólidos agroindustriais e domésticos.

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Published

2013-02-27

How to Cite

Fia, R., Matos, A. T. de, & Resende Luiz Fia, F. (2013). <b>Biological systems combined for the treatment of coffee processing wastewater: II - Removal of nutrients and phenolic compounds</b> - doi: 10.4025/actascitechnol.v35i3.13628. Acta Scientiarum. Technology, 35(3), 451–456. https://doi.org/10.4025/actascitechnol.v35i3.13628

Issue

Vol. 35 No. 3 (2013)

Section

Agricultural Engineering

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