Impacts de l’assainissement autonome sur la qualité des eaux de puits dans la Commune de Sèmè-Podji (Sud-Bénin)

Dovonou, Flavien Edia; Alassane, A; Adjahossou, Vidédji Naéssé; Agbodo, Bibiane; Djibril, Roufai; Mama, Daouda

doi:10.4314/ijbcs.v11i6.42

Cited by 9 publications

(7 citation statements)

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“…Mais, un usage excessif de NPK peut avoir un effet négatif sur la productivité, car il peut devenir toxique pour la plante. D'autre part, cet excès peut entraîner des pollutions de l'environnement (Dovonou et al, 2017 ;Lawani et al, 2017 ;Mondé et al, 2020). Pour une durabilité des systèmes de production maraîchers, le recours aux intrants chimiques doit être limité en mettant plus d'accent sur l'usage des engrais organiques (Ahouangninou et al, 2016 ;Ouédraogo et al, 2020).…”

Section: Significativité Et Interprétationunclassified

“…L'usage excessive d'engrais minéraux peut entraîner des problèmes de contamination de l'environnement (pollution par les nitrates et nitrites). Dovonou et al (2017) ont trouvé des teneurs en nitrates, nitrites et phosphates dépassant les normes admises dans les eaux de consommation au Bénin. Certains effets des pratiques agricoles sur la pollution des eaux de surfaces ont été documentés.…”

Section: Introductionunclassified

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Effets des pratiques agroécologiques sur l’efficacité du système productif des producteurs maraîchers au sud du Bénin

Ahouangninou

Aboubakar

Adé³

et al. 2021

ESJ

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La production maraîchère au Bénin est associée à l’usage des intrants chimiques pour améliorer les rendements. Mais face aux risques environnementaux qui pèsent sur le milieu de production, il est nécessaire de produire plus écologique. L’objectif de cette étude est d’évaluer l’effet des pratiques agroécologiques sur l’efficience du système productif des maraîchers. A cet effet, une base de données du Centre VaLDERA renseignant sur les pratiques agricoles, comptes et résultats d‘exploitation de 197 producteurs des villes de Cotonou, Sèmè-kpodji et Ouidah en 2014 a été analysée. Une analyse en composante principale (ACP) a permis d’identifier des méta-variables : niveau d’utilisation d’engrais, pratiques agroécologiques et caractéristiques sociodémographiques. Ensuite une regression linéaire multiple log-log a permis d’identifier les variables : quantité de fientes, quantité de NPK utilisées, comme les principaux déterminants de l’efficience des producteurs. Les variables diversité écologique, association culturale, rotation sont faiblement corrélées à l’efficience. Il urge de former les producteurs sur les types de rotation qui puissent améliorer leur niveau de productivité et la qualité de leur production, mais aussi de les sensibiliser à l’usage des engrais organiques pour assurer la durabilité de la production.

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Section: Significativité Et Interprétationunclassified

Section: Introductionunclassified

Effets des pratiques agroécologiques sur l’efficacité du système productif des producteurs maraîchers au sud du Bénin

Ahouangninou

Aboubakar

Adé³

et al. 2021

ESJ

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“…These factors could have considerable impacts on the quality of boreholes water. Studies showed that bacterial contamination of groundwater would be due to lack of sanitation system, poor habits in management of wastes and the presence of latrines close to water sources (Djaouda et al, 2014;Dovonou et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Assessment of bacteriological quality of groundwater from boreholes in Maroua (Far North Cameroon)

Djaouda¹,

Lecke²,

Maine³

et al. 2018

Int. J. Bio. Chem. Sci

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Groundwater (e.g. from wells and boreholes) represents an important source for water supply for populations in Maroua, Far north Cameroon. Although its consumption is being accentuated by the limited access to potable water, the quality of water from boreholes is unknown by the consumers. This study aimed at assessing the bacteriological quality of groundwater from boreholes in Maroua, in order to determine the impact of anthropogenic pressure and to measure the sanitary risks to which people who use them as drinking water sources are exposed. A total of 18 boreholes were chosen as sampling sites for bimonthly analyses (from October 2016 to January 2017). Microbiological analyses comprised the prevalence of total coliforms (TCs), Escherichia coli and Heterotrophic Aerobic and Mesophilic Bacteria (HAMB). Some physico-chemical parameters including temperature, pH, electrical conductivity, total dissolved solids (TDSs), salinity, dissolved CO 2 were measured to characterize these waters and to determine their influence on the bacterial flora. The results showed that the pH of the water of the 18 boreholes varied from 6.3 to 7.5 CU; the lower value of temperature was 25.9 °C and the higher was 31.2 °C. The values of electrical conductivity, TDSs and Salinity fluctuated from 171.5 to 1910.3 µS/cm, 119.4 to 1331.3 mg/l and 79.2 to 970.3 ppm respectively in the water samples of these boreholes. The concentration of dissolved CO 2 varied from 9.5 to 27.8 mg/l of water. From these results, 72.2% of analysed water samples were contaminated by the total coliforms and E. coli. The water contamination would be the consequence of the proximity of boreholes with latrines and domestic wastes. There is a need to educate the public about the quality of their water sources and the importance of clean and healthy surroundings near water sources and to implement household water treatment to improve the water quality and reduce waterborne diseases.

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“…Cases of pollution of drinking water have been observed in different areas of developing countries, for example those of Yamtenga in Burkina Faso (Ayouba Mahamane and Guel, 2015), Sèmè-Podji in Benin (Dovonou et al, 2017) and Kpangouin in Man in Côte d'Ivoire (Ahoussi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Effect of flow rate on the performance of Biosand Filter

Mangoua-Allali¹,

Coulibaly²

2022

Int. J. Bio. Chem. Sci

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Lack of access to safe drinking water is an issue in some areas where centralized water treatment is not possible, the biosand filter (BSF) one of several such point-of-use technologies is available. This study was conducted in Côte d’Ivoire to evaluate the effect of flow rate on the performance of the BSF. Three biosand filter (BSF) built in Poly vinyl chloride was used to investigate the effect of three flow rates (1.95 L/d in BSF1; 3.9 L/d in BSF2 and 7.8 L/d in BSF3) for 91 days. Each BSF was filled with 15 cm of gravel, 90 cm of sand and 40 cm of supernatant water. Physical and chemical parameters were analyzed in raw water and filtered water with standards methods. The results showed that the percentage removal of TSS approximately the same for all filters. Ammonium concentrations ranged from 37 to 170 μg.L-1, 110 to 190 μg.L-1 and 150 to 278 μg.L-1 for filtered waters of BSF1, BSF2 and BSF3, respectively. Nitrite concentrations in filtered waters of BSF1 (2 - 33 μg.L-1) were less than those of BSF2 (5 - 45 μg.L-1) and BSF3 (7 - 49.5 μg.L-1). Nitrate concentrations in filtered waters of BSF2 (1.9 to 4 mg.L-1) and BSF3 (1.6 to 4.2 mg.L-1) were higher than those of BSF1 (0.6 to 2.3 mg.L-1). Chemical Oxygen Demand removal efficiency for BSF3 (68.2 ± 9.5%) was lower compared to BSF2 (82.6 ± 3.8%) and BSF1 (93.7 ± 2.8%). The flow rate has an influence only on the removal of ammonium, nitrite, nitrate and Chemical Oxygen Demand. The best treatment results were obtained with the minimum flow rate (1.95 L/d).

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Impacts de l’assainissement autonome sur la qualité des eaux de puits dans la Commune de Sèmè-Podji (Sud-Bénin)

Cited by 9 publications

References 1 publication

Effets des pratiques agroécologiques sur l’efficacité du système productif des producteurs maraîchers au sud du Bénin

Effets des pratiques agroécologiques sur l’efficacité du système productif des producteurs maraîchers au sud du Bénin

Assessment of bacteriological quality of groundwater from boreholes in Maroua (Far North Cameroon)

Effect of flow rate on the performance of Biosand Filter

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