[ Implication des paramètres physico-chimiques sur la qualité des eaux de la rivière Lubumbashi (Pont Tshondo jusqu’en aval de l’affluent de Kamalondo) Lubumbashi, Haut-Katanga / RD Congo ]
Volume 25, Issue 1, June 2016, Pages 152–162
Serge Kashimbo Kalala1, Mukanya Senga Serge Christian2, and Meli Kimpinde Adelin3
1 Département de Phytotechnie, Faculté des Sciences Agronomiques, Université de Lubumbashi, BP 1825, Lubumbashi, RD Congo
2 Chef des travaux au Département de Métallurgie, Faculté Polytechnique, Université de Lubumbashi, B.P:1825, RD Congo
3 Chef des travaux à l’Unité de Gestion des ressources naturelles, Faculté des sciences Agronomiques, Université de Lubumbashi, B.P: 1825, RD Congo
Original language: French
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The study concerns the analysis of physical-chemical parameters (T °, pH, C.E, Turbidity, DO) along the river Lubumbashi to diagnose its current state. Thus, in situ measurements were carried out on the river Lubumbashi divided into two bays. The results obtained show that station B where the discharge liquid effluent from the Slag Processing Society Lubumbashi (STL), an increase of the temperature, conductivity, and a decrease in dissolved oxygen content accompanied by a acid pH. Turbidity has very high values in all stations and above 50 NTU, which indicate very cloudy water condition. This could be justified by the study period, the rains and rivers receive various wastes. These contribute to increased turbidity of river water Lubumbashi. The conductivity values are also very high especially at the station B, and are positively correlated significantly with the pH as well as the concentration of ETM (Cu, Co, Pb, Fe) analyzed in the previous study. What justifies the low oxygen levels in the stations B, C, and D impacted by the hot liquid effluents discharged by the STL, this is confirmed by Hebert and Légaré who have shown that cold water contains a greater amount dissolved oxygen than warm water. The presence of small fish, frogs in the stations A and E at the level of dissolved oxygen of 4.2 and respectively 4.5 mg / L indicates the existence of an aquatic life. Demonstrating a self-purification of the river Lubumbashi.
Author Keywords: STL, liquid waste, physicochemical parameters, surface water, River Lubumbashi.
Volume 25, Issue 1, June 2016, Pages 152–162
Serge Kashimbo Kalala1, Mukanya Senga Serge Christian2, and Meli Kimpinde Adelin3
1 Département de Phytotechnie, Faculté des Sciences Agronomiques, Université de Lubumbashi, BP 1825, Lubumbashi, RD Congo
2 Chef des travaux au Département de Métallurgie, Faculté Polytechnique, Université de Lubumbashi, B.P:1825, RD Congo
3 Chef des travaux à l’Unité de Gestion des ressources naturelles, Faculté des sciences Agronomiques, Université de Lubumbashi, B.P: 1825, RD Congo
Original language: French
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The study concerns the analysis of physical-chemical parameters (T °, pH, C.E, Turbidity, DO) along the river Lubumbashi to diagnose its current state. Thus, in situ measurements were carried out on the river Lubumbashi divided into two bays. The results obtained show that station B where the discharge liquid effluent from the Slag Processing Society Lubumbashi (STL), an increase of the temperature, conductivity, and a decrease in dissolved oxygen content accompanied by a acid pH. Turbidity has very high values in all stations and above 50 NTU, which indicate very cloudy water condition. This could be justified by the study period, the rains and rivers receive various wastes. These contribute to increased turbidity of river water Lubumbashi. The conductivity values are also very high especially at the station B, and are positively correlated significantly with the pH as well as the concentration of ETM (Cu, Co, Pb, Fe) analyzed in the previous study. What justifies the low oxygen levels in the stations B, C, and D impacted by the hot liquid effluents discharged by the STL, this is confirmed by Hebert and Légaré who have shown that cold water contains a greater amount dissolved oxygen than warm water. The presence of small fish, frogs in the stations A and E at the level of dissolved oxygen of 4.2 and respectively 4.5 mg / L indicates the existence of an aquatic life. Demonstrating a self-purification of the river Lubumbashi.
Author Keywords: STL, liquid waste, physicochemical parameters, surface water, River Lubumbashi.
Abstract: (french)
L’étude concerne l’analyse des paramètres physico-chimiques (T°, pH, C.E, Turbidité, DO) le long de la rivière Lubumbashi afin d’établir un diagnostic de son état actuel. Ainsi, des mesures in situ ont été effectuées sur la rivière Lubumbashi reparties en deux biefs. Les résultats obtenus montrent que la station B où se déversent les effluents liquides de la Société de Traitement de Terril de Lubumbashi (STL), une augmentation de la température, de la conductivité, et une diminution de la teneur en oxygène dissous accompagnée d’un pH acide. La turbidité affiche des valeurs très élevées dans toutes les stations et sont supérieures à 50 NTU, qui indiquent l’état très trouble de l’eau. Cette situation pourrait être justifiée par la période de l’étude, la saison des pluies ou les cours d’eau reçoivent des déchets divers. Ceux-ci contribuent à l’augmentation de la turbidite de l’eau de la rivière Lubumbashi. Les valeurs de la conductivité sont aussi très élevées particulièrement à la station B, et sont corrélées positivement de manière significative avec le pH ainsi qu’avec la concentration en ETM (Cu, Co, Pb, Fe) analysés dans l’étude précédente. Ce qui justifie le faible taux d’oxygène dans les stations B, C, et D impactées par les effluents liquides chauds, rejetés par la STL, ceci est confirmé par Hébert et Légaré qui ont démontré qu’une eau froide contient une plus grande quantité d’oxygène dissous qu’une eau chaude. La présence des petits poissons, grenouilles dans les stations A et E au taux d’oxygène dissous respectivement de 4.2 et 4.5 mg/L indique l’existence d’une vie aquatique. Ce qui démontre une auto-épuration de la rivière Lubumbashi.
Author Keywords: STL, Effluents liquides, Paramètres physico-chimiques, Eaux de surface, Rivière Lubumbashi.
How to Cite this Article
Serge Kashimbo Kalala, Mukanya Senga Serge Christian, and Meli Kimpinde Adelin, “Involvement of physico-chemical parameters of the water quality of the river Lubumbashi (Tshondo Bridge to downstream tributary of the Kamalondo) Lubumbashi, Haut Katanga / DR Congo,” International Journal of Innovation and Scientific Research, vol. 25, no. 1, pp. 152–162, June 2016.
