Document Type : پژوهشی
Authors
1 Dept. of Earth Sciences- Faculty of Natural Sciences- University of Tabriz- Tabriz
2 Dept. of Earth Sciences, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
Abstract
As one of Iran's pivotal industrial zones, Asalouyeh has encountered significant challenges concerning the quality of its groundwater resources in recent years. This study aims to conduct a comprehensive hydrochemical analysis and assess the groundwater quality within this plain, with particular emphasis on the impacts of industrial activities and the intrusion of saline water. To achieve this, qualitative data from eight wells and two springs were systematically collected and subjected to rigorous analysis utilizing graphical methods, including Piper and Durov diagrams, along with multivariate statistical techniques. The findings indicate that the intrusion of saline water, coupled with industrial activities, has resulted in elevated concentrations of chloride, sodium, and sulfate ions, thereby severely degrading groundwater quality, particularly in the southern and western regions of the study area. Specifically, sulfate concentrations reached up to 1711 mg/l, while sodium levels escalated to 60%, underscoring the profound influence of both natural and anthropogenic pollutants. Furthermore, the processes of reverse ion exchange and the dissolution of dolomitic and carbonate rocks were identified as predominant hydrogeochemical phenomena influencing the groundwater system. Qualitative assessments reveal that the groundwater across various sectors of the region is largely unsuitable for agricultural applications, although certain springs demonstrate relatively better quality. Additionally, the groundwater exhibits a high sedimentation potential, rendering it less suitable for industrial uses.
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