Impact of the Urbain and Industrial Rejection on the Environment ≪Annaba, North - Est Algeria≫

The main purpose of our study is to characterize the urban and industrial wastewaters and receiving waters of Annaba (NE, ALGERIA) and to recommend an appropriate treatment which will allow their later reuse and minimize their harmfulness on the receiving areas such as the Seybous River, Forcha River and sea. The physicochemical characterization of urban wastewater of six (06) points studies revealed that this liquid rejection are charged out of organic matter expressed in term with BDO5 (Avg.= 120 mg d’O2/l), in COD (Avg.= 200 mg d’O2/l), in Suspend Matter (Avg.= 220 mg/l), in Electric Conductivity (1505 μs/cm) with an alkaline pH.