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Study of the physico-chemical quality of the water of irrigation in Biougra circle along with highlighting the effectiveness of an inhibitor of calcium carbonate precipitation

Abdallah Hadfi, Said Ben Aazza, M’barek Belattar, Said Mohareb, Ali Driouiche


Localized irrigation is characterized by a localized frequent and continuous water supply. It ensures an efficient use of water. However, this fertigation system suffers from the problem of clogging of the distributors.  The present study aims to study the physico-chemical quality of the water of irrigation within the Biougra circle; analyze of the type of scale deposited in the water pipes and the highlight of the effectiveness of an inhibitor of calcium carbonate precipitation. This study was carried out at a temperature of 25°C, by means of the technical "LCGE".  Indeed, the classification of irrigation water, according to Piper, revealed that the analyzed waters are characterized by calcium and magnesium bicarbonate facies with a slight tendency to migrate to the calcium and magnesium chloride and sulfate facies. The characterization of the scale collected in the irrigation water pipes of Biougra circle by X-ray fluorescence, X-ray diffraction and thermal analysis (ATD-ATG) made it possible to prove that the scale is mainly formed of calcium carbonate with calcite variety. The inhibition of calcium carbonate precipitation by a food inhibitor was obtained with a concentration of 0.6 mg/L.

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