...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environment, development and sustainability >Geostatistical and geochemical model-assisted hydrogeochemical pattern recognition along the groundwater flow paths in Coimbatore district, South India
【24h】

Geostatistical and geochemical model-assisted hydrogeochemical pattern recognition along the groundwater flow paths in Coimbatore district, South India

机译：南印度Coimbatore区沿地下水流动路径的地统计学和地球化学模型辅助水文地球化学模式识别

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The deterioration of groundwater quality in Coimbatore district is principally attributed to the geological formations, application of agrochemicals and discharge of untreated industrial effluents. Groundwater samples were collected and analysed to obtain the hydrochemical characteristics for delineating the groundwater recharge and discharge zones. Alkaline water is present in the district during all seasons. Groundwater facies were evaluated and the majority of them were CaHCO3 and Ca-Na-HCO3 types. Generally, HCO3 was used to identify the recharge area and Cl the discharge area. Dominance of HCO3 in both water types helps in identifying the recharge zones. The TDS and major ions in conjunction with HCO3/Cl, SO4/HCO3, HCO3+CO3/Ca+Mg, HCO3+CO3/T.anions and Cl/T.anions were used in the delineation of recharge-discharge areas. Results of geochemical modelling using PHREEQC were in agreement with the analysis of ionic ratios. Carbonate minerals are saturated in the recharge zone and become undersaturated as the flow progresses. HCO3 to Cl types for the recharge to discharge zones were confirmed by the aqueous speciation modelling. Gradual increase of NO3 along the flow path also supported the increasing anthropogenic influences towards the discharge zone. The spatial distribution diagrams drawn for each of these ratios suggested that a major part of the study area is covered by recharge zones. Mettupalayam and Pollachi taluks were found to be discharge zones. The results of the study showed that the water quality in the discharge zones is largely controlled by anthropogenic activities. The study gains importance since part of the water supply to the Coimbatore corporation area is from a source in the neighbouring state and the major surface water source of this area comes under an interstate water dispute.
机译：哥印拜陀地区的地下水水质恶化主要归因于地质构造，农药的应用以及未经处理的工业废水的排放。收集地下水样品并进行分析，以获得描绘地下水补给和排放区的水化学特征。在所有季节中，该地区都存在碱性水。对地下水相进行了评估，其中大多数为CaHCO3和Ca-Na-HCO3类型。通常，使用HCO3识别补给区域，使用Cl识别出放电区域。两种水中HCO3的优势有助于确定补给区。 TDS和主要离子与HCO3 / Cl，SO4 / HCO3，HCO3 + CO3 / Ca + Mg，HCO3 + CO3 / T。阴离子和Cl / T。阴离子一起用于描绘充放电区域。使用PHREEQC进行地球化学模拟的结果与离子比的分析相符。碳酸盐矿物在补给区饱和，并随着流动的进行而变得不饱和。通过水形态学模型确定了向排放区补给的HCO3至Cl类型。沿着流道逐渐增加的NO3也支持了对排放区的人为影响的增加。针对每个比率绘制的空间分布图表明，研究区域的大部分被补给区覆盖。发现米塔帕拉亚姆（Mettupalayam）和波拉奇（Pollachi）滑石为排放区。研究结果表明，排放区的水质在很大程度上受到人为活动的控制。该研究之所以变得重要，是因为向哥印拜陀公司地区提供的部分水来自邻国的水源，而该地区的主要地表水源受到州际水纠纷的困扰。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号