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首页> 外文期刊>Journal of King Saud University >Hydrochemical characterization of geothermal and non-geothermal waters from Wadi Fatima, western Saudi Arabia
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Hydrochemical characterization of geothermal and non-geothermal waters from Wadi Fatima, western Saudi Arabia

机译：瓦迪法蒂玛，西沙特阿拉伯的地热和非地热水水质特征

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摘要

The present study was conducted in the Wadi Fatima catchment in western Saudi Arabia with the primary objective of finding the major hydrochemical differences among geothermal and non-geothermal groundwater samples. Based on the dissolved-silica content of 124 groundwater samples, the chalcedony geothermometer with no steam loss was used to classify them as geothermal or non-geothermal. The mean total dissolved solids (TDS) of the non-geothermal and geothermal samples were 1254?mg/L and 4389?mg/L, respectively. The high TDS of the geothermal samples can be attributed to the higher temperature of circulation leading to a greater degree of mineral dissolution, as well as the mixing of fresh, shallow groundwater with deeper saline water, as can be seen on Piper and Durov plots. Silicate weathering is the primary hydrochemical process active in the area. Based on the saturation indices of commonly dissolved mineral phases, the geothermal water samples showed higher saturation. Using chalcedony geothermometer can be an effective tool for classifying groundwater from low-temperature reservoirs as geothermal and non-geothermal. Further groundwater facies analysis, ionic relationships, and saturation indices can be employed to determine hydrochemical characteristics of these two different types of waters.
机译：本研究在沙特阿拉伯西部的瓦迪法蒂玛集水区进行，主要目的是在地热和非地热地下水样本中找到主要的水化学差异。基于124个地下水样品的溶解二氧化硅含量，没有蒸汽损失的氨化热计用于将它们分类为地热或非地热。非地热和地热样品的平均总溶解固体（TDS）分别为1254Ω·mg / L和4389毫克/升。地热样品的高TDS可归因于循环的较高温度，导致更大程度的矿物溶解，以及用更深的盐水的新鲜，浅地下水的混合，可以在吹笛者和Durov图上看到。硅酸盐风化是该地区的主要水化工程。基于通常溶解的矿物相的饱和索引，地热水样品显示出较高的饱和度。使用Chalcedony地热计可以是从低温储层作为地热和非地热处理地下水的有效工具。可以采用进一步的地下水相分析，离子关系和饱和指数来确定这两种不同类型的水的水化学特征。

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