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Contribution à l'étude de la contamination des eaux et des sédiments de l'Oued Chéliff (Algérie)

Abstract : The present thesis was carried out in co-tutelle between University of Mostaganem (Algeria) and University of Perpignan Via Domitia (France), it was partially funded through a PHC TASSILI project (15MDU937). It aims to study the quality of waters and sediments of Cheliff river and its two important tributaries Oued Rhiou and Mina rivers. During this work, seasonal samplings were performed for both water and sediment in 15 different stations along the watercourses during wet and dry.In order to evaluate the water and sediment quality of watercourses, several parameters were analyzed: the physicochemical parameters, fluorescence amino acids and trace metals. The study reveals a significant organic contamination along the watercourses with high concentrations of conductivity, COD, BOD5 during the wet period and Cl-, TSM during the dry period. The results of trace metals showed high concentrations of Al, Fe and Ni, particularly along the Cheliff and Oued Rhiou rivers during the dry period. On the other hand, Mina river presented high concentrations of Sr and Li. The presence of tryptophan like, tyrosine like and indole like in water samples revealed the impact of untreated urban discharges rejected into watercourses. Another part of the work is devoted to assess the quality of sediments of Cheliff river and its tributaries. The results show that the Cheliff river and its tributary Oued Rhiou are characterized through the presence of high concentrations of Al, Mn, Fe, Cr, Ni, Pb, during wet and dry periods. The present study has shown that the Cheliff river and its tributaries were strongly impacted by anthropogenic pollution and natural phenomenon.
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Submitted on : Friday, December 14, 2018 - 10:44:06 AM
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Batoul Benkaddour. Contribution à l'étude de la contamination des eaux et des sédiments de l'Oued Chéliff (Algérie). Autre. Université de Perpignan, 2018. Français. ⟨NNT : 2018PERP0026⟩. ⟨tel-01955103⟩

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