Browsing by Author "Demiai, A."

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    IDENTIFICATION OF FACTORS CONTROLLING THE QUALITY OF GROUNDWATER IN MITIDJA PLAIN USING INDEXING METHOD AND STATISTICAL ANALYSIS
    (University of Eloued جامعة الوادي, 2018-01-01) Zamiche, S.; Hamaidi-Chergui, F.; Demiai, A.; Belaidi, M.
    In this paper, we describe the hydro geochemical processes in the aquifer of Mitidja using hydro chemical data, statistical analysis and Water Quality Index (WQI) to identify evidence of contamination processes. Two factors were found that explained hydro chemical evolution in the aquifer. These factors reveal the existence of an intrusion of seawater and mechanisms of nitrate contamination of groundwater. The effect of each parameter on the WQI show that the highest mean effective weight value belongs to the TDS, NO3- and SO42- parameters. These results indicated that natural and anthropogenic activities are responsible for the degrading of groundwater quality in the Mitidja plain.
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    POLLUTION OF THE QUATERNARY AQUIFER OF MITIDJA (ALGERIA) BY NITRATES: ORIGINS AND IMPACTS ON THE QUALITY OF WATER FOR HUMAN CONSUMPTION
    (University of Eloued جامعة الوادي, 2018-01-01) Zamiche, S.; Hamaidi-Chergui, F.; Demiai, A.
    The aim of the study is to evaluate the degree of contamination of the aquifer of Mitidja (Algeria) by nitrates and to determine the origins of this contamination by a statistical approach and to estimate the impact on the quality of the aquifer by the application of the Water Quality Index (WQI). The results show that the aquifer is strongly contaminated by nitrates with an average of 71.58 mg/l. These results were confirmed by the calculation of the Water quality Index (WQI) which varies between 59.29 and 190.25 with an average of 110.16, thus 60% of samples are characterized by a water of bad quality for human consumption. The Principal Component Analysis (PCA) enounce the anthropic origin of the nitrates which are regarded as chemical pollutants of permanent type and diffuse sight that their origin is agricultural.