Physicochemical parameters of groundwater (Foggara) and sand dune (Timimoun) Algeria

This work aims at the characterization of sand dune (Timimoun), which is found in considerable quantity in Algeria Western South, and studies the physicochemical quality of ground water (foggara), using for the drinking and irrigation. In order to perform a chemical analysis of the porous environment studied in summer to provide us with a qualitative and a quantitative information about the chemical composition of the sample, the results obtained show that the quartz (97%) is the most represented mineral, the oxides of aluminum, potassium, iron, chromium, and manganese, identified by the chemical analysis, probably enter in the clayey phase, the granulometric analysis permitted us to determine some parameters as the uniformity coefficient, equivalent diameter, and a comparison of the IR spectrum of the sand (washed and non washed) was achieved, and observations to the scanning electron microscopy and the X-ray analysis are also achieved. A part of this work is devoted to the follow-up of the absorbance of the filtrate at different lengths of waves; Erg sand of Timimoun presents favorable features for its use as being bed filtering in pretreatment. On the other hand, an analysis of ground water (foggara) of Timimoun in the south of Algeria noted Fi indicates that 50% of the samples had magnesium concentrations ([Mg2+] ##xgt; 50 mg/L), 100% were sulfated, with sulfate ion concentrations exceeding the standard recommended by WHO ([SO42-] ##xgt; 250 mg/L). Moreover, 75% excessive calcium concentrations, with [Ca2+] ##xgt; 150 mg/L, translated by a strong conductivity of 4030 μS/cm.