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Temporal Monitoring of Drinking Water’s Quality for Adjustment of the Production Station: Case of Gagnoa Drinking Water Treatment Station, Ivory Coast

Kouamé Kouakou Benoit, Briton Bi Gouéssé Henry, Konan Kouakou Séraphin, Gueu Souhmaro

Abstract


The frequent refusal of local populations to consume tap water, despite the financial resources deployed by the State, constitutes a headache for managers who have to choose between customer satisfaction and the search for profits. The quality (chemical and organoleptic) of the water offered by the managers of drinking water networks is one of the causes of this refusal. The objective of this study is to use the Jar Test method to optimize the water treatment process and to temporally monitor the characteristics of the treated water. The test carried out made it possible to optimize the alumina sulfate treatment rate which decreased from 40 to 25 g/m3 (the flow rate of the alumina sulfate dosing pump therefore decreased from 100 to 62.45 L/h). The new rate obtained (25 g/m3) and applied to the Gagnoa plant gave results in compliance with quality standards during the period of monitoring of treated water with reduction rates ranging from 80 to 95% on turbidity. and color and from 20 to 60% on the iron, ammonium and manganese contents. Adjusting the doses of calcium hypochlorite during disinfection made it possible to eliminate the taste and odor of bleach due to inorganic or organic chlorinated compounds.


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DOI: https://doi.org/10.37628/jcst.v9i2.1455

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