Qualitative evaluation of groundwater in terms of its suitability for drinking and irrigation. The case study of Sidi-Bel-Abbes alluvial aquifer (NW Algeria)

IF 0.8 Q4 WATER RESOURCES
Abdelkader Otmane, Radia Gherissi, Kamila Baba-Hamed, Abderrazak Bouanani
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引用次数: 1

Abstract

Sidi-Bel-Abbes province is a semi-arid area mainly used for agricultural activity in northwestern Algeria. Its groundwater resources are characterized by high salinity varying from one area to another. This work aims at improving our understanding of these waters, through hydrochemical classification, to define their chemical facies and monitor their spatial evolution. In addition, this groundwater’s quality is assessed regarding their suitability for drinking and irrigation. The obtained results showed that the groundwater of the Sidi-Bel-Abbes area is dominated by chlorides, particularly the chloride calcium and sodium facies. Indeed, the spatial distribution of the different chemical facies confirmed the contribution of adjacent hydrogeological units and the interaction between the groundwater and the Mekerra Wadi. In terms of suitability for drinking, the maximum chemical element concentration accepted by the Algerian legislation is exceeded in most samples, especially for nitrates, chlorides, sodium and calcium. The interpretation of Riverside and Wilcox diagram revealed that the alluvial groundwater of Sidi-Bel-Abbes is generally characterized by a high salinity with a low to medium alkalinity danger. Therefore, the quality of this water is medium to poor, suitable for irrigation, but under certain conditions. Also, the groundwater is unsuitable for sensitive plants because of its high chloride (Cl) ion content. Moreover, the results obtained indicate that the use of these waters in irrigation presents low sodium risks, and therefore are not likely to modify the structure of the soils in the Sidi-Bel-Abbes plain or reduce their permeability.
地下水饮用和灌溉适宜性的定性评价。阿尔及利亚西北部Sidi-Bel-Abbes冲积含水层案例研究
西迪-贝尔-阿贝斯省是阿尔及利亚西北部的半干旱地区,主要用于农业活动。它的地下水资源的特点是高盐度,从一个地区到另一个地区。这项工作旨在通过水化学分类来提高我们对这些水域的认识,以确定它们的化学相并监测它们的空间演变。此外,还对该地下水的饮用和灌溉适宜性进行了评价。结果表明:Sidi-Bel-Abbes地区地下水以氯化物为主,尤其是氯钙钠相。事实上,不同化学相的空间分布证实了相邻水文地质单元的贡献以及地下水与Mekerra Wadi的相互作用。在饮用的适宜性方面,大多数样品,特别是硝酸盐、氯化物、钠和钙,都超过了阿尔及利亚立法所接受的最大化学元素浓度。河滨图和Wilcox图的解释表明,Sidi-Bel-Abbes的冲积地下水普遍具有高盐度和低至中等碱度危险的特征。因此,这种水的水质是中等到较差的,适合灌溉,但要有一定的条件。此外,地下水中氯离子含量高,不适合敏感植物生长。此外,所获得的结果表明,在灌溉中使用这些水具有低钠风险,因此不太可能改变Sidi-Bel-Abbes平原土壤的结构或降低其渗透性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
1.80
自引率
50.00%
发文量
36
审稿时长
8 weeks
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