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Industrial Plant for Olive Mill Wastewater from Two-Phase Treatment by Chemical Oxidation
Authors:Leopoldo M Nieto  Gassan Hodaifa  Salvador R Vives  José A G Casares
Affiliation:1Professor, Chemical Engineering Dept., Univ. of Granada, 18071 Granada, Spain.
2Professor Doctor Hired, Molecular Biology and Biochemical Engineering Dept., Pablo de Olavide Univ., 41013 Seville, Spain (corresponding author). E-mail: ghodaifa@upo.es
3Univ. Lecturer, Chemical Engineering Dept., Univ. of Granada, 18071 Granada, Spain.
4Professor on Special Duty, Chemical Engineering Dept., Univ. of Granada, 18071 Granada, Spain.
Abstract:Olive-oil production generates high and variable amounts of wastewaters from the olives and olive-oil washing (OMW), resulting to great environmental impact. These waters are normally stored in large holding ponds for evaporation during the summer. The present study examines the chemical-oxidation process using ferric chloride catalyst for the activation of H2O2 (Fenton reaction). Tests have been made on an industrial scale. The final average value of chemical oxygen demand (COD) was close to 371?mg?O2?L?1 (%CODremoval = 86%, CODinitial = 2684?mg?O2?L?1), and the water produced can be used for irrigation or can be discharged directly into the municipal wastewater system for tertiary treatment.
Keywords:Wastewater management  Industrial wastes  Coagulation  Oxidation  
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