综合方法研究尼日利亚东南部阿夸伊博姆州Ikot Ekpene垃圾场周围渗滤液对地下水的影响

IF 1 Q3 GEOCHEMISTRY & GEOPHYSICS
N. George, A. Ubom, J. Ibanga
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引用次数: 30

摘要

在尼日利亚南部阿夸伊博姆州Ikot Epene地方政府区及其周边地区,采用地球物理、地球化学和水文地质测量综合评估了渗沥液对垃圾场地下水质量的影响。在地质条件的约束下,利用土工材料的电阻率值和埋深,绘制了地表电性分布的电阻率剖面。在靠近垃圾场的地下层中观察到的高电导率是渗滤液负载的导电流体浸出并排入地下的症状。有些品种的水化学结果符合世卫组织标准,而有些品种由于土壤中与渗滤液有关的污染物的溶解、浸出和排放而相对较高。离子对的相关指数对配对离子的影响不显著,说明个别离子的显著值与地质无关,而是由于渗滤液残渣的沉淀所致。一般来说,在垃圾场附近的直接地下水通道中,渗滤液的影响比远离垃圾场的含水层储存库更为显著。水电阻率和体电阻率的正交图在不同层数下呈指数增长。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Integrated Approach to Investigate the Effect of Leachate on Groundwater around the Ikot Ekpene Dumpsite in Akwa Ibom State, Southeastern Nigeria
Geophysical, geochemical, and hydrogeological measurements have been integrated to assess the effect of leachate on groundwater quality within the dumpsite in Ikot Epene Local Government Area of Akwa Ibom State, Southern Nigeria, and its environs. The resistivity values and depth of burial of the geomaterials, constrained by geology, were used in producing resistivity cross sections which show the geoelectric distribution of the subsurface near and away from the dumpsite. The observed high conductivity in subsurface layers closed to the dumpsite is symptomatic of the leachate-loaded conductive fluid leached and drained into the subsurface. The hydrochemical results of some species conform to WHO standards, while some were found to be relatively higher due to dissolution, leaching, and draining of leachate related contaminants in the soil. The correlation indices of the ion pairs show no significant effect on the paired ions, indicating that the significant value of some of the individual ions is not geologic but due to precipitation from the leachate residue. In general, the effect of leachate is more dominant in the immediate groundwater pathway near the dumpsite than aquifer repositories away from it. The crossplots of the water resistivity and bulk resistivity show exponential increase for the different layers.
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来源期刊
International Journal of Geophysics
International Journal of Geophysics GEOCHEMISTRY & GEOPHYSICS-
CiteScore
1.50
自引率
0.00%
发文量
12
审稿时长
21 weeks
期刊介绍: International Journal of Geophysics is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles in all areas of theoretical, observational, applied, and computational geophysics.
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