Rabia Benaddi, Sofyan Sbahi, Ahmed Osmane, Khadija Zidan, Naaila Ouazzani
Tensift Hydraulic Basin Agency, Marrakech, Morocco
Laboratory of Water, Biodiversity and Climate Change, Faculty of Sciences Semlalia
Cadi Ayyad University., Marrakech, Morocco, Faculty of Sciences Agadir
Morocco is one of the countries most affected by the scarcity of water resources and the poor distribution of rain fall. Wastewater treatment plants (WWTPs) are critical for protecting water resources and ensuring environmental sustainability. These facilities play a vital role in reducing pollution loads before discharge into natural water bodies. The primary objective is to lower concentrations of Suspended Solids (MES), Biochemical Oxygen Demand (BODâ‚…), and Chemical Oxygen Demand (COD) to meet environmental standards and safeguard aquatic ecosystems. Natural lagoon is the most widely used treatment process in Morocco. Indeed, Morocco is a sunny country throughout the year. The lagoon system requires minimal effort in operation and maintenance. Moreover, this system is the best process for removing bacteria indicators. For these reasons, a study of the purification performance of natural lagoons during 3 years, located in Amezmiz region (Morocco) was carried out.