韩城矿区矿山固体废弃物淋滤试验研究

发布时间：2018-04-13 01:19

  本文选题：矿山固体废弃物 + 淋滤试验　； 参考：《矿业安全与环保》2017年04期

【摘要】：以矿山固体废弃物为研究对象,利用自主研制的淋滤仪器,模拟自然降雨对矿山废石的淋滤过程,探索污染元素及其淋滤规律。试验结果表明:(1)不同试验条件下的淋滤液电导率k变化趋势相同,k—t曲线整体呈下降趋势;(2)对于pH值,新鲜和风化废石有明显不同的淋滤规律;(3)不同试验条件下的淋滤液SO_4~(2-)浓度c变化趋势相同,c—t曲线整体均呈下降趋势;(4)相同风化程度下,降雨强度越大,淋滤液k越小,c越小,pH值变化不明显;(5)相同降雨强度下,风化程度越高,淋滤液k越大,c越大,pH值越低;(6)综合来看,风化程度对于淋滤液的k、pH值、c等的影响均大于降雨强度的影响。
[Abstract]:Taking the mine solid waste as the research object, the leaching process of mine waste rock by natural rainfall was simulated by using the self-developed leaching instrument, and the pollution elements and their leaching rules were explored.The results showed that the K change trend of leaching fluid conductivity under different experimental conditions was the same as that of K / t curve.The leaching law of fresh and weathered waste rocks is obviously different. (3) under different experimental conditions, the rainfall intensity increases with the increase of rainfall intensity under the same changing trend of concentration c of the leachate so _ 4 ~ (2)) the whole curve of c-t is in a downward trend. (4) under the same weathering degree, the rainfall intensity increases.Under the same rainfall intensity, the higher the weathering degree, the bigger the leaching filtrate k, the larger the pH value, the lower the pH value, the lower the pH value.The influence of weathering degree on the pH value of leaching filtrate was greater than that on rainfall intensity.
【作者单位】： 西安科技大学地质与环境学院;
【基金】：国家自然科学基金面上项目(41572287);国家自然科学基金重点项目(41130753) 陕西省科技统筹创新工程计划项目(2016KTCL03-19) 陕西省省级自然类科研项目(15JK1166)
【分类号】：X752
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本文编号：1742287