M. Siavash haghighi
Abstract
One of the factors reducing the chemical quality of groundwater used in the industry is a gradual increase of ions concentration. These ions can affect the mineral processing and reduce mining efficiency by corrosion or sedimentation in the path of water circulation. In Gol Gohar Iron ore mine, the rate ...
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One of the factors reducing the chemical quality of groundwater used in the industry is a gradual increase of ions concentration. These ions can affect the mineral processing and reduce mining efficiency by corrosion or sedimentation in the path of water circulation. In Gol Gohar Iron ore mine, the rate of salinity in groundwater has increased significantly in recent years. Because brine groundwater in the mine is used to produce pulp in concentrators, its quality has been a matter of concern. In this study, different factors affecting the groundwater quality and causing salinity increase are studied. These factors include quality of groundwater inflow, surface water infiltration, lithology of the region, depth of mining, saturated thickness of the aquifer, changes of hydraulic gradient, ground water circulation path, water budget, isotopic properties of water and groundwater evaporation.
M. Faryabi; N. Kalantari; A. Negarestani
Abstract
The Jiroft plain is located at about 230 km from Kerman city in southeast of Iran. As groundwater is the main source for agriculture, industry and drinking in this area, thus its qualitative evaluation is very important. In this study for evaluation of groundwater chemical quality, a combination of statistical ...
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The Jiroft plain is located at about 230 km from Kerman city in southeast of Iran. As groundwater is the main source for agriculture, industry and drinking in this area, thus its qualitative evaluation is very important. In this study for evaluation of groundwater chemical quality, a combination of statistical method such cluster analysis and correlation coefficients and hydro geochemical methods such ionic ratios and composition diagrams were used. Groundwater samples were grouped with the use of Cluster Analysis method and similar samples were identified. On the basis of cluster analysis results, the groundwater samples fall into four groups, in other words the aquifer has been divided into four zones and each zone has peculiar chemical characteristics. In this paper ionic ratios of (Na+K-Cl)/ (Na+K-Cl+Ca), Na/ (Na+Cl), Mg/ (Ca+Mg), Ca/ (Ca+SO4), Cl/ (sum anions) and HCO3/ (sum anions) and composition diagrams for the characterizing groundwater influencing factors were used. Based on the obtained results, processes such as dissolution of gypsum and halite, Na-rich plagioclase weathering and ion exchange affect the groundwater quality of the study area.