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Biological systems combined for the treatment of coffee processing wastewater: II - Removal of nutrients and phenolic compounds - doi: 10.4025/actascitechnol.v35i3.13628
- Source :
- Acta Scientiarum. Technology; Vol 35 No 3 (2013); 451-456, Acta Scientiarum. Technology; v. 35 n. 3 (2013); 451-456, Acta scientiarum. Technology, Universidade Estadual de Maringá (UEM), instacron:UEM, Acta Scientiarum: Technology, Vol 35, Iss 3, Pp 451-456 (2013)
- Publication Year :
- 2013
- Publisher :
- Universidade Estadual De Maringá, 2013.
-
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%).
- Subjects :
- General Computer Science
General Mathematics
coffee
General Physics and Astronomy
chemistry.chemical_element
phenols
engineering.material
nitrogen
Nutrient
Geomembrane
phosphorus
lcsh:Science (General)
constructed wetland systems
Lime
Phosphorus
General Engineering
Environmental engineering
General Chemistry
Pulp and paper industry
anaerobic reactor
Engenharia Agrícola
Nitrogen
Wastewater
chemistry
lcsh:TA1-2040
engineering
Constructed wetland
General Earth and Planetary Sciences
High-density polyethylene
lcsh:Engineering (General). Civil engineering (General)
lcsh:Q1-390
Subjects
Details
- Language :
- Portuguese
- ISSN :
- 18062563 and 18078664
- Database :
- OpenAIRE
- Journal :
- Acta Scientiarum. Technology; Vol 35 No 3 (2013); 451-456, Acta Scientiarum. Technology; v. 35 n. 3 (2013); 451-456, Acta scientiarum. Technology, Universidade Estadual de Maringá (UEM), instacron:UEM, Acta Scientiarum: Technology, Vol 35, Iss 3, Pp 451-456 (2013)
- Accession number :
- edsair.doi.dedup.....72cd5e4b037d66078090610218a46719