Global Advanced Research Journal of Engineering, Technology and Innovation (ISSN: 2315-5124) August 2015 Vol. 4(4), pp 069-078

Copyright © 2015 Global Advanced Research Journals   

 

Original Research Articles

Treatment of Olive mill Wastewater by ozonation  and electrocoagulation  processes

Walid K. Bani Salameh

Al-Zaytoonah University of Jordan, Department of civil engineering P.O.Box 130 Amman 11733,Jordan.At sabbatical leave from Al-Balqa Applied University ,Department of chemical Engineering

Email: wbanisalamh@hotmail.com

Accepted 05 February 2015


Abstract 

The main purpose of this paper  was to investigate the removal of total suspended solids (TSS) and chemical oxygen demand (COD) for olive mill wastewater (OMW) by the combination of electrocoagulation (EC) and the ozonation process. In the combination of electrocoagulation followed by ozonation process the optimum working pH was found to be in range 6. The efficiency of the electrocoagulation process allowed removal of TSS and COD about 82.5% and 47.5% respectively at 45mA/cm2 after 70 minutes by using coupled iron–aluminum electrodes. These results showed that the optimum TSS and COD removal was obtained at the optimum experimental parameters such as current density, pH, and reaction time. After EC, most organic compounds still remained in the effluent. The subsequent ozonation shows high levels of organic compound elimination. The obtained TSS and COD values: 31.1g/L and 67.3 g/L for the sample from the olive mill, 5.4  g/L and  35.35  g/L after EC   and  5.4  g/L and  2.6  g/L  respectively after ozonatio. 

Keywords: Olive mill wastewater, Electrode, Electrocoagulation  EC, TSS, COD, ozonation

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