Valorisatio n et Caractérisa tion des huiles usagers et des déchets graisseux issus du prétraitement des eaux usées domestiques : Cas de la STEP de AIN OULMAINE

Abstract

Our study aimed to evaluate the efficiency of wastewater treatment at the Ain Oulmène wastewater treatment plant. This work demonstrated that biowaste, particularly used oils and greases recovered at the Ain Oulmène wastewater treatment plant, can be a valuable resource for soap and biodiesel production. The use of various calcium carbonate-based catalysts, whether commercially available or prepared from marine waste and algae, demonstrated generally satisfactory performance in converting triglycerides to methyl esters. These results confirm the feasibility of local recycling of grease waste, which is both environmentally friendly and economically advantageous, contributing to the reduction of environmental pollution and the promotion of renewable energy. It would be relevant, in the continuity of this study, to continue research in order to optimize the reaction conditions, to study the durability of the catalysts and to develop processes on a larger scale to strengthen the impact of this recovery on the industrial level. After treatment for wastewater, purified water meets the standards of discharged into the environment imposed by ISO, reflecting the purification efficiency and proper functioning of the Ain Oulmaine station.