A Study on Groundwater Quality and Spatial Distribution of Gandarvakottai Taluk by Using GIS

The Asian Review of Civil Engineering Pub Date : 2015-05-05 DOI:10.51983/tarce-2015.4.1.2215

B. Abraham Ponsingh, K. Maharani

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引用次数: 3

Abstract

The present study investigates the hydro geochemical characteristics of groundwater quality in Gandarvakottai Taluk of the pudukottai district, Tamil Nadu, India. The Secondary data were collected from the CGWB office Chennai, tharamani during pre-and postmonsoon periods of 2010. The groundwater quality assessment has been carried out by evaluating the physicochemical Parameters such as pH, EC, TDS, HCO3-, Cl-, SO4, Ca2+, and Mg2+ for both the seasons. Based on these parameters, groundwater as been assessed in favour of its suitability for drinking and irrigation purpose. Dominant cations for Pre and Post the seasons are in the order of Na+ > Mg2+ > Ca2+ >K, and Mg2+Na+ >Ca2+>K while the dominant anions both post monsoon and pre monsoon have the trends of HCO3 ->Cl- >CO3>Fl-, respectively. Analytical results observed from various indices reveal that the groundwater quality is good in some places recently polluted by the waste materials. The observed chemical variations in pre-monsoon and postmonsoon seasons may be the effect to rock-water interactions, ion-exchange reactions, and runoff of fertilizers from the surrounding agricultural lands.

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基于GIS的Gandarvakottai Taluk地下水水质及空间分布研究

本文研究了印度泰米尔纳德邦pudukottai地区Gandarvakottai Taluk地下水水质的水文地球化学特征。次要数据是在2010年季风前后期间从CGWB办公室金奈，塔拉马尼收集的。通过对两个季节的pH、EC、TDS、HCO3-、Cl-、SO4、Ca2+、Mg2+等理化参数的评价，进行了地下水水质评价。根据这些参数，对地下水进行了评价，认为它适合饮用和灌溉。季风前后的优势阳离子为Na+ > Mg2+ >Ca2+>K和Mg2+Na+ >Ca2+>K，季风前后的优势阴离子分别为HCO3 ->Cl- >CO3>Fl-。综合各项指标的分析结果表明，近年来受到废弃物污染的部分地区地下水水质较好。在季风前和季风后季节观测到的化学变化可能是对岩石-水相互作用、离子交换反应和肥料从周围农田径流的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The Asian Review of Civil Engineering

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