煤矸石污染物释放及影响机理

Release of Coal Gangue Pollutants and Its Influence Mechanism

本次试验是为了解释煤矸石污染物释放及煤矸石渗出液对土壤,地表水和地下水污染的强度。本文通过静态浸泡和动态淋滤,利用统计分析方法研究了煤矸石中可溶性物质的释放特征和释放能力,评价了污染物释放对环境的影响。研究得出在动态淋滤下煤矸石中有机物释放的能力远大于静态下煤矸石中的有机物释放能力。但在动态淋滤下煤矸石中可溶性固体释放的能力小于静态下煤矸石中的可溶性固体的释放能力。煤矸石的粒径以及时间对煤矸石的污染物释放能力贡献较大,淋滤试验对比浸泡试验,煤矸石粒径大小对煤矸石中物质的释放影响更大。

The purpose of this experiment is to explain the release of pollutants from coal gangue and the pollution intensity of coal gangue exudate on soil, surface water and groundwater. In this paper, through static immersion and dynamic leaching, the release characteristics and release capacity of soluble substances in coal gangue were studied by statistical analysis method, and the impact of pollutant release on the environment was evaluated. The results show that the release capacity of organic matter in coal gangue under dynamic leaching is much greater than that in static state. However, the release capacity of soluble solid in coal gangue under dynamic leaching is less than that in static state. The particle size and time of coal gangue contribute greatly to the pollutant re-lease capacity of coal gangue. Compared with immersion test, the particle size of coal gangue has a greater impact on the release of pollutants from coal gangue.