Removal efficiencies of dissolved organic matter and ammonium in coal mine water by coal gangue through column experiments

被引：0
|
作者：
Zhao L. [1 ,2 ]
Sun Y. [1 ]
Yang Z. [3 ]
Wang S. [3 ]
Yang J. [3 ]
Sun C. [1 ]
Tian Y. [1 ]
机构：
[1] Institute of Resources & Environment, Henan Polytechnic University, Jiaozuo
[2] Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Jiaozuo
[3] CCTEG Xi'an Research Institute, Xi'an
来源：
Meitan Xuebao/Journal of the China Coal Society | 2018年 / 43卷 / 01期
关键词：
Ammonium; Coal gangue; Coal mine water; Column experiment; Dissolved organic matter; Water treatment;
D O I：
10.13225/j.cnki.jccs.2017.0557
中图分类号：
学科分类号：
摘要：
Good understanding of removal efficiencies of pollutants in coal mine water by coal gangue is of great significance to evaluate the coal mine underground reservoir technology and effective comprehensive usage of coal mine water. Column experiments at room temperature were carried out to study the removal efficiencies of dissolved organic matter (DOM) and ammonium in coal mine water by the filled coal gangue from the gob area of Bulianta Coal Mine. The results show that the removal efficiency of dissolved organic carbon (DOC) is 64% after 6.44 pore volumes (PV) effluents, which is related to the adsorption and biodegradation of DOC by aluminosilicate minerals such as kaolinite, muscovite, illite and chlorite in the studied matrix, which has low retardation capacity of aromatic compounds in the studied DOM. Meanwhile, the removal efficiency of ammonium decreases with time and amounts to 81% at the end of experiments, which is related to the limited adsorption capacity of kaolinite and illite in the matrix. The pH value of the effluent is higher than that of the studied raw water after 1 PV, which could be induced by the variation of hydrolytic action of ammonium in the column. In addition, Oxidation-reduction Potential (ORP) of the effluent decreases obviously with time, indicating the enhancement of reducing environment and biodegradation ability. © 2018, Editorial Office of Journal of China Coal Society. All right reserved.
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页码：236 / 241
页数：5
相关论文
共 15 条
  • [1] Chabukdhara M., Singh O.P., Coal mining in northeast India: An overview of environmental issues and treatment approaches, International Journal of Coal Science & Technology, 3, 2, pp. 87-96, (2016)
  • [2] Qian M., On sustainable coal mining in China, Journal of China Coal Society, 35, 4, pp. 529-534, (2010)
  • [3] Gu D., Water resource and surface ecology protection technology of modern coal mining in China's energy Golden Triangle, Engineering Sciences, 15, 4, pp. 102-107, (2013)
  • [4] Xu J., Zhu W., Wang X., New method to predict the height of fractured water-conducting zone by location of key strata, Journal of China Coal Society, 37, 5, pp. 607-612, (2012)
  • [5] Gu D., Theory framework and technological system of coal mine underground reservoir, Journal of China Coal Society, 40, 2, pp. 239-246, (2015)
  • [6] Gu D., Yan Y., Zhang Y., Et al., Experimental study and numerical simulation for dynamic response of coal pillars in coal mine underground reservoir, Journal of China Coal Society, 41, 7, pp. 1589-1597, (2016)
  • [7] Fu T.L., Wu Y.G., Ou L.S., Et al., Effects of thin covers on the release of coal gangue contaminants, Energy Precedia, 16, pp. 327-333, (2012)
  • [8] Zou Y., Lu R., Yang J., Three-dimensional excitation emission matrix fluorescence spectroscopic characterization of dissolved organic matter in coal mine water, Journal of China Coal Society, 37, 8, pp. 1396-1400, (2012)
  • [9] Birdwell J.E., Engel A.S., Characterization of dissolved organic matter in cave and spring waters using UV-V is absorbance and fluorescence spectroscopy, Organic Geochemistry, 41, pp. 270-280, (2010)
  • [10] He X.S., Xi B.D., Wei Z.M., Et al., Fluorescence excitation-emission matrix spectroscopy with regional integration analysis for characterizing composition and transformation of dissolved organic matter in landfill leachates, Journal of Hazardous Materials, 190, pp. 293-299, (2011)
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