内蒙古唐家会矿区煤矸石污染组分的淋滤特征研究  

Study on Leaching Characteristics of Coal Gangue Pollutant Componentsin a Mining Area of Inner Mongolia

作　　者：焦永进 程爱民 翟恩发 常德喜 白铁兵 Jiao Yongjin;Cheng Aimin;Zhai Enfa;Chang Dexi;Bai Tiebing(Tangjiahui Coal Mine,Ordos Huaxing Energy Co.,Ltd.,Ordos,Inner Mongolia 017000,China)

机构地区：[1]鄂尔多斯市华兴能源有限责任公司唐家会煤矿,内蒙古鄂尔多斯017000

出　　处：《绿色科技》2022年第4期20-23,28,共5页Journal of Green Science and Technology

基　　金：淮河能源(集团)股份有限公司科学技术项目(编号:HNKY-XBHX-Q7(2018)057)。

摘　　要：由于煤矸石堆放产生的淋滤液会一定程度上造成地下水的污染,为了更深入地了解煤矸石在自然堆放条件下经雨水浸泡冲刷作用污染组分的释放规律,选择在有机玻璃柱内堆积煤矸石模拟内蒙古唐家会矿区降雨条件下进行了间歇性淋滤实验研究。结果表明,煤矸石污染组分TDS、pH值、F^(-)、SO_(4)^(2-)、总碱度、Cl^(-)、总硬度及COD在Ⅰ期内的释放量较大,Ⅱ和Ⅲ期呈波动状,Ⅳ期时趋于平稳。通过相关性分析可知这些污染组分之间存在较高的相关性,能够反映各污染组分具有相同的来源或地球化学过程;主成分分析总体解释了80.7%的变量方差贡献率,第一主成分主要载荷元素为TDS、钙离子和总硬度,这三种污染组分具有较强的同源性。实验数据可为建立规范的煤矸石堆放条件提供数据基础,同时为煤矸石堆放场周围地下水及地表水的污染治理提供一定的科学依据。The leach produced by piling coal gangue will cause groundwater pollution to some extent.In order to have a deeper understanding of the release law of pollution components caused by rain water immersion and erosion of coal gangue when it is naturally piled,according to the previous study on coal gangue leaching experiment,the intermittent leaching experiment was carried out by piling coal gangue in plexiglass column to simulate the rainfall conditions in Tangjiahui mining area of Inner Mongolia.The results show that the release amounts of TDS,pH,F^(-),SO_(4)^(2-),total basicity,Cl^(-),total hardness and COD of coal gangue pollution components are large in stageⅠ,fluctuated in stageⅡandⅢ,and tended to be stable in stageⅣ.Correlation analysis shows that there is a high correlation between these pollution components,which can reflect that each pollution component has the same source or geochemical process.The principal component analysis explained the variance contribution rate of 80.7%.The main loading elements of the first principal component were TDS,calcium ion and total hardness,and these three pollution components had strong homology.It can provide data basis for establishing standard coal gangue stacking conditions and scientific basis for pollution control of groundwater and surface water around coal gangue dumping site.

关 键 词：煤矸石 淋滤 相关性分析 主成分分析 

分 类 号：X508[环境科学与工程—环境工程]