Traitement Physicochimique D’une Eau Polluée Par Des Colorants Industriels
Résumé: Industrial Wastewater Treatments are diverse and very varied. Among which, the physicochemical treatments, which are based on the coagulation-flocculation phenomenon, are the most effective in the case of water loaded with recalcitrant pollutants which can only be eliminated by this mode of treatment. The objective of this study was to test the effectiveness of a bioflocculant prepared in the laboratory. It turned out that the combination of optimal doses of coagulants (ferrous sulphate and lime) with the bioflocuant diluted 5 times was the most effective. The pH of the final solutions (9-12) corresponds to the effective zone of the process, and the viscosity of the flocculant played an important role in the results obtained. The dye removal rates, taken as a pollution model, exceed 95% in the majority of cases. The results obtained showed the effectiveness of the bioflocculant used and that the chosen process is very suitable for the dyes removal.
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