文章基本信息

标题：Physico-chemical characterization of water quality in the Bastacola coalmine regions of Jharia coalfield, Dhanbad, India
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作者：Abbhijit Chowdhury ; Pulak Kumar Patra ; Shibani Chaudhury 等
期刊名称：International Research Journal of Earth Sciences
电子版ISSN：2321-2527
出版年度：2017
卷号：5
期号：2
页码：1-8
语种：English
出版社：International Science Community Association
摘要：Assessment of water quality is needed for its sustainable management in drinking, irrigation and industrial use. Coal mining activities are known to contaminate both the surface and ground area in their adjoining areas. In the present study fourteen physico-chemical parameters (pH, EC, TDS, HCO3-, F-, Cl-, Br-, NO3-, SO42-, PO43-, Na+, K+, Ca+2, Mg+2) were estimated from 25 water samples, collected from seven coalmine sites in Jharia coalfield. The chemical analysis results were used to calculate the water quality index (WQI), percentage sodium (%Na) and sodium absorption ratio (SAR) to assess the suitability of water for drinking and agricultural purposes. While most of the samples are within permissible limit, five and seven samples were found to be high in nitrate and sulfate respectively. One sample each was also found to be above permissible limit for fluoride and total dissolved solid (TDS). WQI study categories the water sample into6 good, 14 medium and 5 bad categories. All the SAR values within permissible range, whereas few samples are slightly outside the range in case of % Na and TDS. Majority of the water samples belong to Na +Mg + Cl + SO4 and Na + Cl + SO4 type which indicate the rock water interaction. It can be concluded that mining activity has been responsible for deterioration of water quality in the area, especially the increase in the SO42- content. Agricultural activities may have increased the NO3- content in some water samples.
关键词：Water quality index (WQI);Percentage sodium (%Na);Sodium absorption ratio (SAR);Water pollution;Coal- mines