Etude du fonctionnement de la station d’épuration et la réutilisation de ses eaux : Cas de la STEP de Sidi Bel Abbes

Abstract

Abstract This work aims to evaluate the effectiveness of activated sludge biological treatment of wastewater at the treatment plant of Sidi Bel Abbes. The results obtained during the analysis of different physicochemical parameters allow reached a good reduction in COD, BOD 5 and TSS with returns of 94.34%, 95.66% and 97.49% with low proportion of chemical elements and fertilizers (P, NO2, NO3). This test therefore aims also to analyze the prospects reuse of municipal wastewater in Sidi Bel Abbes. Thus, the description of reuse as practiced today at the International Use of biological tools such as freshwater mussel A. ssp and fry of the species Cyprinus carpio allows us to give positive results as tolerance fry carp lake Sidi Mohamed Benali, moreover, resistance, efficiency and power filtration of treated water by A. sp kind of mold. This work shows the importance of and used for the maintenance of balance of aquatic ecosystems by developing health monitoring tools aquatic species. Keywords : Wastewater - physico-chemical parameters - clean water - Fry – Reuseutilisation - Molluscs - Filtration.