Removal Wastewater of Olive Mill by Coagulation Process

Wastewater from the olive oil mill (OMW) is among the most difficult wastewater to treat because it contains toxic and persistent compounds, presenting a significant organic load and high turbidity. As part of our research, we studied the effectiveness of treating OMW through a coagulation process using both chemical and natural coagulants in batch mode. The physico-chemical analysis of OMW showed high levels of the initial chemical oxygen demand (COD) at approximately 240.9 g/L, as well as turbidity and polyphenols, with an initial concentration of around 5.7 g/L. The optimum turbidity removal rate is equal to 99.74 % is obtained when we are using the aloe vera (15 mL/L) solution with 37.5 g/L of Fenugreek. The proposed treatment process, which uses Aleo vera and Fenugreek as a biocoagulant, can be applied in many industries due to its unique characteristics, including cheap cost and environmentally friendly approach.