Résumé:
The purpose of this study is to evaluate the performance of the activated sludge treatment plant located in the commune of Bouchekkif (wilaya de TIARET). The sampling was carried out monthly during the year 2018-2019 followed by specific physicochemical analyzes in terms of the chemical oxygen demand (DCO), the biological oxygen demand (BOD) and the measurement of the material in suspension (MES). These parameters are the most used in the evaluation of a treatment plant. It appears that the Tiaret station contributes to eliminate a significant proportion of the pollutants.