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
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