Caractérisation bactériologique des eaux résiduaires brutes de la ville de Cotonou (Bénin)

Adjahouinou, D C; Yehouenou, B; Liady, M N; Fiogbe, E D

doi:10.4314/jab.v78i0.13

Cited by 6 publications

(6 citation statements)

References 4 publications

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“…However, these recorded results comply with the standards of limit values for direct and indirect discharge into the receiving environment and the quality standards for water intended for irrigation [9,10]. Moreover, these results are lower than those found in Cotonou City's wastewater in Benin [11] and in Abidjan City's industrial discharges in Ivory Coast [12].…”

Section: Discussionsupporting

confidence: 65%

Environmental Impact Assessment of Taza City’s Wastewater: Application through Principal Component Analysis

Touzani

Machkor²,

Boudouch

et al. 2020

Scientifica

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Taza City is among the Moroccan cities which is in full urban expansion, with a daily wastewater discharge volume estimated at 16534 m3/d in 2020, and expected to reach 20056 m3/d by 2030. These waters, collected in a combined sewerage network, are directly released into the natural environment without any treatment. Indeed, a large part of this water is discharged into Oued Defali, the main tributary of Oued Larbâa. In order to manage and better understand these discharges impact on the streams crossing this city, wastewater sampling campaigns were carried out for one year from May 2018 to April 2019 at domestic (S1) and industrial (S2) sites. The wastewater physicochemical characterization revealed that these discharges are highly loaded with organic matter in terms of chemical oxygen demand (S1 avg = 1231.44 mg/l and S2 avg = 933.03 mg/l), biochemical oxygen demand (S1 avg = 511.87 mg/l and S2 avg = 464.35 mg/l), and suspended matter (S1 avg = 744.11 mg/l and S2 avg = 578.13 mg/l). The use of principal component analysis (PCA) has allowed us to collect as much information as possible from the database of the physicochemical analyses performed for the studied parameters.

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Section: Discussionsupporting

confidence: 65%

Environmental Impact Assessment of Taza City’s Wastewater: Application through Principal Component Analysis

Touzani

Machkor²,

Boudouch

et al. 2020

Scientifica

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“…Fecal coliforms and intestinal enterococci showed high levels of high faecal contamination of these waters with values of 7x10 7 cfu/100ml and 1x10 7 cfu/100ml respectively. This characteristic of wastewater had also been made by other authors in Africa [3,26]. Indeed, the contaminations of these reservoirs were superposable to those obtained in urban wastewater as observed by [27,28] in Morocco.…”

Section: Discussionsupporting

confidence: 79%

Assessment of Bacterial Load in Urban Wastewater in Drainage Canals in the Cities of Abidjan, Bouake and Yamousoukro, Côte d'Ivoire

Sidik¹,

Bagre²,

Carole³

et al. 2023

SAJRM

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The microbiological quality of urban wastewater presents important environmental, health and political challenges. The lack of a water treatment system leads to a lack of knowledge about the variability of the microbiological quality of wastewater in the major cities of Côte d'Ivoire. Aims: The purpose of this study is to assess the level of microbiological pollution of urban wastewater in the drainage channels of the different agglomerations. Methodology: Indicators of environmental pollution (mesophilic aerobic germs) and faecal contamination (fecal coliforms and intestinal enterococci) were analyzed at 14 upstream and downstream sites in cities of Abidjan, Bouaké, Yamoussoukro during rainy periods and in the dry season. Results: Our results show an important pollution translated by the abundance of bacterial indicators of which the aerobic mesophilic germs can reach average loads going from 3x107 cfu/100 mL to 7x109 cfu/100 mL and the witnesses of fecal contaminations can reach average loads going from 3x105 cfu/100 mL to 7x107 cfu/100 mL for the fecal coliforms and from 6x105 cfu/100mL to 1x107 cfu/100mL for the intestinal enterococci These average bacterial loads fluctuate according to the configuration of the sewerage systems and the hydrological conditions. In the rainy season, a significant dilution of certain indicators, precisely mesophilic aerobic germs and intestinal enterococcus, can be observed. The number of microorganisms encountered exceeds the values indicated by the WHO guidelines (WHO, 2017) and the standards in force for wastewater discharge. Conclusion: Creation of strong treatment systems for wastewater to manage them before any discharge in waterbodies have to be a priority. This could reduce the risks of pollution from an environmental and health point of view. The microorganisms encountered can cause mild or serious infections.

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“…The bacteriological contamination far exceeds the standard (1000 CFU/100ml) set by the World Health Organization for wastewater for irrigation 31 . The bacteria contained in these waters are indicative of contamination by bacteria or viruses, pathogenic for humans 15,31,32 . The stagnation of these waters close to the places of residence, as well as the smells released by them would cause diseases related to a bad sanitation like the diarrhea, the typhoid fever, the cholera, the hepatitis, or due to the vectors related to water (malaria, filariasis, dengue fever) 33 , and the progressive degradation of the living environment of local populations 13,34 .…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the health and environmental impacts of the malfunction of the wastewater network in the municipality of Port-Bouët (Abidjan-Côte d'Ivoire)

2019

jcbsc

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The municipality of Port-Bouët, like other municipalities in the city of Abidjan, faces enormous difficulties for the management of its wastewater with the rapid growth of its population. Added to this is the deterioration of existing sanitation facilities, domestic sewage runoff, stagnant in empty spaces, streets, pavement and drains, resulting in foul odors. In order to assess the health and environmental impacts related to the malfunction of the Port-Bouët municipality wastewater system, surveys were conducted. One addressed to 384 households in the areas of Port-Bouët Center and Vridi provided with sanitation network, and two others with the DCBA (Regional Directorate of Sanitation South Abidjan) and hospitals Port-Bouet and Vridi City. The analyzes of the physicochemical and bacteriological parameters were carried out thanks to the French standard and the methods described by Rodier. They reported high average concentrations for the chemical parameters of pollution. The results of the bacteriological analyzes Evaluation … GNAGNE Agness et al.

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Caractérisation bactériologique des eaux résiduaires brutes de la ville de Cotonou (Bénin)

Cited by 6 publications

References 4 publications

Environmental Impact Assessment of Taza City’s Wastewater: Application through Principal Component Analysis

Environmental Impact Assessment of Taza City’s Wastewater: Application through Principal Component Analysis

Assessment of Bacterial Load in Urban Wastewater in Drainage Canals in the Cities of Abidjan, Bouake and Yamousoukro, Côte d'Ivoire

Evaluation of the health and environmental impacts of the malfunction of the wastewater network in the municipality of Port-Bouët (Abidjan-Côte d'Ivoire)

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