ÉTUDE COMPARATIVE DES PERFORMANCES DU VETIVER ET DU TYPHA POUR LE TRAITEMENT D’EFFLUENTS PRETRAITES DANS UNE FOSSE SEPTIQUE EN MILIEU RURAL A L’AIDE D’UN REACTEUR BIOLOGIQUE A FLUX HORIZONTAL
- Post by: SOAPHYS-KZ
- 11 décembre 2025
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http://dx.doi.org/10.46411/jpsoaphys.2025.C25.09
Section de la parution: Informations de publication
J. P. Soaphys, Vol 5, N°1 (2025) C25A09
Pages : C25A09-1 à C25A09-6
Informations sur les auteurs et affiliations
Abdou Khafor Ndiaye.1, Falilou Coundoul. 2, Abdoulaye Deme.3, Antonina Torrens Armengol 4.
1Université Gaston Berger, Saint-Louis du Sénégal, ndiaye.abdou-khafor@ugb.edu.sn
2Université Gaston Berger, Saint-Louis du Sénégal, falilou.coundoul@ugb.edu.sn
3Université Gaston Berger, Saint-Louis du Sénégal, abdoulaye.deme@ugb.edu.sn
4University of Barcelona, Espagne, antoninatorrens@ub.edu
Corresponding author e-mail : ndiaye.abdou-khafor@ugb.edu.sn
ABSTRACT
This article explores the ecological treatment of pre-treated effluents from a septic tank at a rural site equipped with a horizontal flow biological reactor. The main objective of the study is to compare the efficiency of two filter bed cells using different plants, Vetiver and Typha, while identifying sustainable solutions tailored to the needs of rural school settings. The methodology combines field surveys to understand the specific conditions of the site with laboratory analyses to assess the pollutant load of the water before and after treatment. The results show that both filters are effective for most of the parameters studied, including chemical oxygen demand (COD) and five-day biochemical oxygen demand (BOD5). Vetiver exceeded expectations by removing more COD, reaching an average effluent concentration of 74 mg/L, compared to 155 mg/L for Typha. The latter proved to be more effective in filtering suspended solids (SS), with an average concentration of 1 mg/L, compared to 3 mg/L for Vetiver. Both filters surpassed target values for several parameters, including the reduction of faecal coliforms (FC). However, further optimisation is required for phosphate treatment. In conclusion, both filtration systems are effective and suitable for treating pre-treated effluents in rural areas. Vetiver and Typha offer specific advantages, and their combined use could enhance the robustness and efficiency of treatment systems. The findings highlight the need for further research to optimise these ecological systems, particularly for phosphate removal.
Keywords : Analysis, Suitability, Site, Installation, photovoltaic, Rural areas
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