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首页> 外文期刊>Environment, development and sustainability >Assessment of groundwater quality using geoelectrical potential and hydrogeochemical analysis in Eha-Amufu and environs, Enugu state, Nigeria
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Assessment of groundwater quality using geoelectrical potential and hydrogeochemical analysis in Eha-Amufu and environs, Enugu state, Nigeria

机译：尼日利亚艾古州埃古州和环境中电气潜力和水文地理学分析评估地下水质量分析

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Presently, campaign for potable water supply is on the increase while the need to harness groundwater to alleviate the shortage of potable water is very crucial. This study investigated the groundwater potential of the local geologic formations and to determine the extent and distribution of the saline zones at Eha-Amufu. Integrated approach using geological, geoelectrical and hydrogeochemical investigations was adopted. Twenty-seven (27) vertical electrical sounding (VES) were performed at different locations within the area, using the Schlumberger electrode configuration with a maximum electrode separation of 600 m. Results from the VES revealed that the study area is made up of 3-6 geoelectrical layers, and are predominantly of QH and H curve types. The formations were observed to be characterized by low permeability zones/intervals, suggesting that Eha-Amufu could only possess perched aquifers table which supports the use of hand-dug wells. Hydro-chemical analysis of the ten (10) groundwater samples collected from different hand-dug wells indicated that the groundwater is characterized by Calcium (Ca)-Magnesium (Mg)-Chloride (Cl) water type, and could be classified as moderately hard to very hard. Water samples showed evidence of contamination with heavy metal such as Pb2+ beyond WHO standard, thereby making it unfit for domestic uses and consumption. Further result probe revealed that the local geology is the major process controlling the fate of groundwater chemistry in the area through weathering and rock-water interaction. Therefore, the present study proposes that other forms of portable water provisions should be explored such as harvesting and treatment of the various river resources in the area using purification plants and development of regional water conduits.
机译：目前，饮用水供应的活动正在增加，而利用地下水需要缓解饮用水的短缺是非常至关重要的。本研究研究了当地地质学的地下水潜力，并确定了EHA-AMUFU的盐区的程度和分布。采用了使用地质，地电和水力地理学研究的综合方法。在该区域内的不同位置进行二十七（27）次（27）次（VES），使用钢板电极配置，最大电极分离为600米。 VES的结果显示研究区域由3-6个地用电层组成，主要是QH和H曲线类型。观察到该形成的特征在于低渗透区/间隔，表明EHA-AMUFU只能拥有支持使用手挖井的栖息的含水层表。从不同的手挖井收集的十（10）个地下水样品的水化学分析表明，地下水的特征在于钙（CA）-MAGNESIUM（Mg） - 氯化钙（CL）水式，并且可以被归类为中度非常努力。水样显示出具有重金属的污染，例如PB2 +超出世卫组织标准的污染，从而使其不适合国内使用和消费。进一步的结果探测表明，当地地质是通过耐候和岩石 - 水相互作用控制地区地下水化学的命运的主要过程。因此，本研究提出了应探索其他形式的便携式水规定，例如使用净化植物和区域水导管的开发来收获和处理该地区的各种河流资源。

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