Impact of coal gangue on the level of main trace elements in the shallow groundwater of a mine reclamation area

查看全文 作　　者：Li [1,2]Wei;Chen [1,2]Longqian;Zhou [1,2]Tianjian;Tang [1,2]Qibao;Zhang [1,2]Ting;

机构地区：[1]Key Laboratory of Resources and Environment Information Engineering.China University of Mining&Technology,Xuzhou 221116,China;[2]School of Environment and Spatial Informatics,China University of Mining&Technology,Xuzhou 221116,China

出　　处：《Mining Science and Technology》索引2011年第21卷第5期,共5页

基　　金：The project was funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) 摘　　要：Coal gangue is the most used filling material during reclamation of areas suffering subsidence from min- ing. Main trace element levels (F, As, Hg, and Pb) in shallow groundwater in the reclamation area may be affected by leaching from the gangue. This can has an impact on the application of the water for agricul- tural irrigation or use as drinking water. Therefore, it is of great significance to understand the effect coal gangue has on the shallow groundwater of a reclaimed area. We studied the effect of coal gangue on fluo- rine, arsenic, mercury, and lead levels in the shallow groundwater of a reclamation area by testing the water and the coal gangue. One well near the reclamation area was used as a control well and element levels in water from this well and from the soil next to the well were also measured. The results show that the levels of these elements are increasing in the reclamation area over time. The increase in fluorine, arsenic, mercury, and lead in monitor wells varies from 7.42% to 8.26%, from 7.13% to 7.90%, from 4.85% to 6.48%, and from 4.69% to 6.42%, respectively. Fluorine and arsenic levels are lower in monitor wells than in the control water. The other elements are found in greater concentration than in the control. The Nemerow index also indicates that the shallow groundwater in the reclamation area I is moderately affected by the back-filling coal gangue, while the shallow groundwater in the reclamation area II and III are slightly affected by the back-filling coal gangue. This shallow groundwater could be used for agri- cultural irrigation or for drinking. 关键词：Coal gangue Main trace elements Shallow groundwater Reclamation area Nemerow index

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Impact of coal gangue on the level of main trace elements in the shallow groundwater of a mine reclamation area

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耦合文献(436)

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