Hydrogeochemical study and determination of Pollution Source of Dehloran Sargrou Spring

Authors

1 Department of Geology, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran

2 Faculty of Agriculture, Ilam University, Ilam, Iran

Abstract

Groundwater salinity and contamination, especially in carbonate formations, are one of the most important challenges of water resources management in Iran. The study of contamination sources shows that sometimes, tectonic conditions caused interference and adjacent salinity sources with karst waters resources. Therefore, recognizing the contamination and understanding the mechanism of this process can help to determine the location of the contamination mixing point and provide a solution for the discharge of water before contamination. Sergrou is one of the famous springs of Dehloran which due to the high salinity and the presence of some pollutants is not exploited. In the spring water flow path, Sergrou spring Water contributes to pollution of surface water and groundwater of the region. In order to hydrochemical investigation of the spring, in a 10-year period, the hydrochemical data were collected as well as four data sampling steps were performed to complete the available data. Graphical methods, composite diagrams, ion ratios, ion exchange diagrams and also salinity ratios were used to analyze the data. The results of the study showed that spring water is unusable for drinking and agricultural usage. Analysis of ion ratios and ion exchanges showed that chlorine molar concentration is higher than sodium at all times, as well as other ion ratios, reversed ion exchange represents the interactions or interactions between deep Oilfield brines. The determination of the amount of bromine and iodine and their relative weight with chlorine also confirms the mixing of Oilfield brines with spring water.

Keywords

References

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Advanced Applied Geology
Volume 9, Issue 3
October 2019
Pages 357-373

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