摘要：

针对多组分煤矿酸性废水(AMD)污染程度严重、治理费用高的特点, 选取麦饭石、铁屑作为AMD井下原位处理的试验材料, 开展了动态土柱试验研究。试验结果表明, 由麦饭石及铁屑复合组成的1#柱对AMD的去除效果明显好于仅由麦饭石组成的2^#柱, 其对Fe²⁺、Mn²⁺、SO₄^2-、COD的平均去除率分别为99.9%、64.5%、60.0%、53.8%,出水pH为8.0.该方法为AMD的井下原位廉价处理及麦饭石的新应用提供了参考。

关键词: 麦饭石, 铁屑, 煤矿酸性废水, 井下原位处理

Abstract:

Aimed at the acidic mine drainage(AMD) characteristics, such as serious contamination and expensive treatment cost, a dynamic pillar study has been executed by using maifan stone and scrape iron as materials for the in-situ treatment of AMD under the shaft. The experiments show that Column 1 which consists of maifan stone and scrap iron has obviously better removing capacity than Column 2 which consists of maifan stone alone. In Column 1, the average removing rates of Fe²⁺, Mn²⁺, SO₄^2-, COD are 99.9%, 64.5%, 60.0%, 53.8%, respectively, and the effluent pH is 8.0. This method provides references for the treatment of AMD in-situ at a low cost, and new applications of maifan stone.

Key words: maifan stone, scrap iron, acidic mine drainage, in-situ treatment under the shaft

中图分类号: 

• X705