Evaluation of Liquid Pollution at Bay of Arzew – Oran -Algeria

Water pollution is a universal problem; this vital matter essential to the life of all living things has become rare where drought is the only truth despite rising rates of precipitate compared with recent years. Our study is precisely to support the conformity of effluents discharged in the Bay of Arzew with the standard Algerian and study the impact of organic pollution on surface water, to protect the environment where the final recipient is presented in our case by the sea .This bay is considered as a vulnerable area where the potential disasters can cause great maritime pollution. There are many vulnerable sites, which could cause serious pollution’s problem by oil spills. The bay of Arzew presents probably the most polluted marine environment of the Mediterranean. For this purpose several samples are taken and a range of analysis is performed, such as chemical oxygen demand (COD), biological oxygen demand (BOD), oil content (HC) .The main objective of this work is determining the source of pollution and the more intense process of treating the pollution before being evacuated to the sea.