[ Effet d’un traitement couplant la coagulation-floculation par la poudre des graines de Moringa oleifera Lam. et la filtration sur sable fin associé au charbon de bois sur la purification des eaux de la rivière Kalamu à Kinshasa ]
Volume 66, Issue 1, April 2023, Pages 122–131
Roger Kalonga Kalonga1, Michel Mubiala Katala2, and Daniel-Bienvenu Sifa Kwa Mungu3
1 Université de Kinshasa. Faculté des Sciences Agronomiques. Département de Gestion des Ressources Naturelles. BP. 117 Kin XI, RD Congo
2 Université de Kinshasa. Faculté des Sciences Agronomiques. Département de Chimie et Industries Agricoles. BP. 117 Kin XI, RD Congo
3 Université de Kinshasa. Faculté des Sciences Agronomiques. Département de Chimie et Industries Agricoles. BP. 117 Kin XI, RD Congo
Original language: French
Copyright © 2023 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.
Access to drinking water remains a major concern in the Democratic Republic of Congo, particularly in the city-province of Kinshasa where the populations are confronted with the optimal management of water points, the insufficiency of hygiene and sanitation, the low drinking water supply rates and the lack of appropriate water disinfection methods at the family level. Therefore, the integration of biological processes for the treatment of river water could be a sustainable alternative in improving the quality of drinking water, due to the availability and non-toxicity of the substances used. This study aims to test the effectiveness of M. oleifera seed powder in purifying the waters of the Kalamu River. The methodology adopted consisted in the treatment of water samples from the mentioned river by coagulation-flocculation with M. oleifera seed powder coupled with filtration on fine sand associated with charcoal. The procedure began with the preparation of the colloid solutions. To do this, each of the three different doses (0.5 g/l, 1g/l and 1.5 g/l) of M. oleifera seed powder was mixed with 100 ml of water from said river. Then, each solution of the colloids was added to 900 ml of water sample to be treated. After mixing and a rest period, the treated water samples were filtered. To assess the effectiveness of this process, the physicochemical parameters (turbidity, pH, dissolved oxygen, ammonium, nitrates, nitrites, phosphate, COD, BOD5, electrical conductivity and total hardness) and microbiological (E. coli, Faecal streptococci and total Coliforms) of the treated water were evaluated after the filtration step. For all the treated water samples, the best dose was 0.5 g/l of M. oleifera seed powder because it significantly improved all the parameters analyzed up to the potability standards prescribed by the WHO.
Author Keywords: Polluted waters, potability, parameters, physicochemical, microbiological.
Volume 66, Issue 1, April 2023, Pages 122–131
Roger Kalonga Kalonga1, Michel Mubiala Katala2, and Daniel-Bienvenu Sifa Kwa Mungu3
1 Université de Kinshasa. Faculté des Sciences Agronomiques. Département de Gestion des Ressources Naturelles. BP. 117 Kin XI, RD Congo
2 Université de Kinshasa. Faculté des Sciences Agronomiques. Département de Chimie et Industries Agricoles. BP. 117 Kin XI, RD Congo
3 Université de Kinshasa. Faculté des Sciences Agronomiques. Département de Chimie et Industries Agricoles. BP. 117 Kin XI, RD Congo
Original language: French
Copyright © 2023 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
Access to drinking water remains a major concern in the Democratic Republic of Congo, particularly in the city-province of Kinshasa where the populations are confronted with the optimal management of water points, the insufficiency of hygiene and sanitation, the low drinking water supply rates and the lack of appropriate water disinfection methods at the family level. Therefore, the integration of biological processes for the treatment of river water could be a sustainable alternative in improving the quality of drinking water, due to the availability and non-toxicity of the substances used. This study aims to test the effectiveness of M. oleifera seed powder in purifying the waters of the Kalamu River. The methodology adopted consisted in the treatment of water samples from the mentioned river by coagulation-flocculation with M. oleifera seed powder coupled with filtration on fine sand associated with charcoal. The procedure began with the preparation of the colloid solutions. To do this, each of the three different doses (0.5 g/l, 1g/l and 1.5 g/l) of M. oleifera seed powder was mixed with 100 ml of water from said river. Then, each solution of the colloids was added to 900 ml of water sample to be treated. After mixing and a rest period, the treated water samples were filtered. To assess the effectiveness of this process, the physicochemical parameters (turbidity, pH, dissolved oxygen, ammonium, nitrates, nitrites, phosphate, COD, BOD5, electrical conductivity and total hardness) and microbiological (E. coli, Faecal streptococci and total Coliforms) of the treated water were evaluated after the filtration step. For all the treated water samples, the best dose was 0.5 g/l of M. oleifera seed powder because it significantly improved all the parameters analyzed up to the potability standards prescribed by the WHO.
Author Keywords: Polluted waters, potability, parameters, physicochemical, microbiological.
Abstract: (french)
L’accès à l’eau potable demeure une très grande préoccupation en République Démocratique du Congo, particulièrement dans la ville province de Kinshasa où les populations sont confrontées à la gestion optimale des points d’eau, à l’insuffisance d’hygiène et d’assainissement, aux faibles taux de desserte en eau potable ainsi qu’au manque des méthodes appropriées de désinfection de l’eau à l’échelle familiale. De ce fait, l’intégration des procédés biologiques de traitement des eaux de rivière pourrait être une alternative durable dans l’amélioration de la qualité des eaux de boisson, du fait de la disponibilité et de la non-toxicité des substances utilisées. La présente étude vise à tester l’efficacité de la poudre des graines de Moringa oleifera dans la purification des eaux de la rivière Kalamu. La méthodologie adoptée a consisté au traitement des échantillons d’eau provenant de ladite rivière par coagulation-floculation avec la poudre des graines de M. oleifera couplée à la filtration sur sable fin associé au charbon de bois. La procédure a débuté par la préparation des solutions des colloïdes. Pour ce faire, chacune des trois différentes doses (0,5 g/l, 1g/l et 1,5 g/l) de la poudre des graines de M. oleifera a été mélangée avec 100 ml d’eau provenant de ladite rivière. Ensuite, chaque solution des colloïdes a été ajoutée à 900 ml d’échantillon d’eau à traiter. Après le mélange et un temps de repos, s’en est suivie la filtration des échantillons d’eau traitée. Pour évaluer l’efficacité de ce procédé, les paramètres physicochimiques (turbidité, pH, Oxygène dissous, ammonium, nitrates, nitrites, phosphate, DCO, DBO5, conductivité électrique et dureté totale) et microbiologiques (Escherichia coli, Streptocoques fécaux et Coliformes totaux) de l’eau traitée ont été évalués après l’étape de filtration. Pour tous les échantillons d’eau traitée, la meilleure dose a été de 0,5 g/l de la poudre des graines de M. oleifera car elle a permis d’améliorer sensiblement tous les paramètres analysés jusqu’aux normes de potabilité prescrites par l’OMS.
Author Keywords: Eaux polluées, potabilité, paramètres, physicochimiques, microbiologiques.
How to Cite this Article
Roger Kalonga Kalonga, Michel Mubiala Katala, and Daniel-Bienvenu Sifa Kwa Mungu, “Effect of a treatment combining coagulation-flocculation with Moringa oleifera Lam seed powder and fine sand filtration combined with charcoal on the purification of water from the Kalamu River in Kinshasa,” International Journal of Innovation and Scientific Research, vol. 66, no. 1, pp. 122–131, April 2023.
