NDLI: Elaboration d'un pilote de filtration horizontale pour la potabilisation de l'eau dans les pays en voie de développement : aspects (bio) physico-chimiques

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Elaboration d'un pilote de filtration horizontale pour la potabilisation de l'eau dans les pays en voie de développement : aspects (bio) physico-chimiques

Content Provider	Semantic Scholar
Author	Foto, Bienvenu Armand Éric
Copyright Year	2015
Abstract	The objective of this thesis concerned the elaboration of a horizontal flow filtration pilot in Central African Republic because of a lack of potable waters in this country. In the conception of this pilot, treatment processes which should be chosen for riverine water purification, have to be low energy cost and easy to be implemented. Taking into account these considerations, we decided to employ the low-filtration method with the sand as the adsorbent. Indeed, this latter is known to behave as a natural adsorbent through hydrogeological processes in sols. After itemizing pluviometric data. it was shown that ground-waters possessed good water quality, whereas aquifers in low depths were found to be instead contaminated. A pilot was built by respecting the recommendations established by Eaux de Paris located at Bangui Performances and quality of treated waters were followed up, and the data obtained during the running were found to be in good accordance first with potable-water criteria with a water production of 400L/h and second with water-quality norms which were usually recommended for a raw water before its chlorination. Modelisation tests on the transit of water in the pilot were carried out using MODFLOW. For model calibration, it was used the dye Fluorescein as a tracer. The adsorption properties of sand in this pilot were studied owing to the combined use of the techniques:SEM/EDS;BET;ICP-AES;CHNS;UV/visible. In comparison with the starting sand used in the construction of the pilot, all the data showed clearly that the adsorption capacity of this sand increases with time owing to surface modifications and clays and iron oxides / hydroxides depositions in cracks.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://ori-nuxeo.univ-lille1.fr/nuxeo/site/esupversions/4a5b71f4-0f6d-4769-8546-c023b8994dd8
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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