Optimization of coagulant presence in the natural raw water at the Ain Nokbi station in Fez

An optimization study of the coagulation-flocculation chemical treatment process was carried out at the Ain Nokbi station in Fez in order to identify the problems associated with liquid rejects. The purpose of the study involved optimizing three key factors in the coagulation-flocculation process: the pH of the raw water, the coagulant amount (aluminum sulphate) and the flocculent amount (sodium alginate solution or polyelectrolyte at 0.1 mg/l). This demonstrated how acidification can improve treatment performance, particularly in terms of pH. Specifically, reducing the pH to 7 revealed advantages during disinfection, boosting the efficiency of the process. In addition, the optimum dosage of coagulant (aluminum sulphate) has been determined to be around 50 mg/l instead of 60 mg/l, saving 10 mg/l and reducing annual costs by MAD 240,000

Identifying effluents from a food processing industry

The agri-food industry in Morocco generates significant volumes of liquid waste, contributing to environmental challenges that directly impact public health. To address this issue, it is crucial to characterize this wastewater comprehensively, enabling the development of suitable treatment strategies to alleviate pollution and potentially facilitate recycling. This study focuses on the identification of effluents from an olive and caper preservation industry, employing physicochemical and bacteriological analyses on raw, decanted, and filtered effluent samples. The findings reveal that the effluent from the olive and caper preservation industry is characterized by high acidity and an exceptionally elevated mineral load. Notably, the application of decantation and filtration methods demonstrates a limited influence, primarily affecting the reduction of suspended solids. Understanding these physicochemical and bacteriological characteristics is pivotal for devising targeted treatment protocols, ensuring effective pollution reduction, and exploring avenues for potential recycling of this agri-food industry wastewater. This research serves as a foundation for informed decision-making in the development of sustainable and efficient wastewater management practices, balancing environmental preservation with industrial needs