Traitement Des Eaux Usées Au Niveau De La Raffinerie D’arzew

Résumé: Oil refining in the petroleum industries is one of the most important activities considered to be a source of pollution, due to the gravity of this situation we have decided to rely on previous studies to shed light on its importance. The study presented in this work consists in making a comparison of the physicochemical and biological characteristics of the treated water at the outlet of the « unit 27 » effluent treatment plant of Arzew refinery with Algerian standards for industrial discharges. The main objectives that we have set in this thesis are to carry out a bibliographical research on wastewater and the origins of pollution, as well as to present the treatment plant as part of expressing the treatment methodology, then we have mastered analytical methods based on the chemical and biological characteristics of the pollution in order to respond to a problem concerning the quality of the water discharged by the station, and finally to suggest an effective recommendations for the process. Due to the exceptional situation and view the containment of the covid-19 pandemic, we could not displace to this station where we did a short internship during our training, which is why we discussed the results of other works done by other students. Analyzes of wastewater treated in the refinery revealed that the liquid discharges treated at unit 27 is conform for the Algerian standards for industrial discharges. This study has shown us that wastewater treatment also enables compliance with environmental protection regulations.

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