EVALUATION OF THE QUALITY OF DRINKING WATER PRODUCED BY THE TREATMENT PLANT:
CASE OF MAURITANIA
MOHAMEDEN TFEILA 1, KHADIJA ZAHIDI 1, MOHAMED OULD SID’AHMED OULD KANKOU 2, SALAH SOUABI 1*, MOULAY ABDELAZIZ ABOULHASSAN 3 1. Université Hassan II, Faculté des Sciences et Techniques, Laboratoire GEE, BP 146, Mohammedia, Maroc
2. Université des Sciences, de Technologies et de Médecine, Laboratoire de CEE, BP 5026, Nouakchott, Mauritanie
3. Ecole Nationale des Sciences Appliquées d'Al Hoceima, Département GCE, BP 03, Ajdir Al-Hoceima, Maroc
*Corresponding author: salah.souabi@gmail.com
This study aims to evaluate the performance of treatment plants after three years of operation of the city of Nouakchott. It essentially aims to study the evolution of various raw water qualities during the different processing steps (T °, pH, EC, MES, Cl-, NO3-, NO2-, sulfate...). The water treatment in Béni Nadji pretreatment station has led to a significant removal of turbidity, organic matter, and a 99-100 % elimination of SS (Suspended Solids). For drinking water, the total hardness varies between 3.8 and 5.6 °fH. The value of turbidity in drinking water was between 0.2 and 0.3 NTU with turbidity varying between 21 and 330 NTU in the surface water. Aluminum surface concentration surface was between 0.1 and 0.7 mg·L-1. The nitrate concentration varies between 0.5 and 2 mg·L-1, which is lower than that suggested by The World Health Organization (50 mg·L-1). As a result of this study, we concluded that water clarification phases of Nouakchott must be improved.
