Author/Authors :
Chaoui, Widad Université Badji Mokhtar - Faculté des Sciences de la Terre - Département de Géologie, Laboratoire de Recherche en Mécanique des Matériaux et Maintenance Industrielle, (LR3MI), Algérie , Bousnoubra, Houria Université Badji Mokhtar - Faculté des Sciences de l Ingénieur - Département d Hydraulique, Laboratoire de Géologie, Algérie , Benhamza, Moussa Université Badji Mokhtar - Faculté des Sciences de la Terre - Département de Géologie, Laboratoire de Géodynamique et Ressources Naturelles, Algérie , Bouchami, Tidjani Université Badji Mokhtar - Faculté des Sciences de l Ingéniorat - Département de Génies des Procédés, LR3MI, Algérie
Title Of Article :
Etude de la pollution des eaux des oueds Seybouse et Mellah (Région de l Est Algérien)
Abstract :
The purpose of this study is to test a working protocol based on sampling from surface and belonging to individual wells to establish water quality and to set a database on the extent of water pollution in Algeria. Chemical analysis results indicate that the dominant chemical compounds are characterized by sodium and chloride-sulfate as a result of domestic and industrial discharges, and geological formations leaching. The construction of ammonium-nitrate diagram shows that the ratio NH_4^+/NO_3^- decreases from upstream to downstream and is explained by the conversion of ammonium into nitrogen during the observation period ranging from January to June 2007. Excessive levels of PO_4^- in the Mellah river were observed compared to the Seybouse, which leads to eutrophication. Changes in DBO_5 and DCO evolve following acceptable levels in both rivers. Excessive chloride concentrations ( 600 mg/l) in the Mellah river may be explained by domestic waste, industrial and evaporitic formations leaching. The simulation shows that NH_3 and oxygen are under-saturation in the water especially in the Mellah river reflecting an advanced eutrophication.
NaturalLanguageKeyword :
Seybouse river , Mellah river , Water quality , Pollution , Surface water , Water wells , Simulation
JournalTitle :
Revue Des Sciences Et De La Technologie, Synthèse
