摘要
矿山酸性废水中元素的含量与季节和淋洗量有关。元素间相关性和硫与铁的摩尔比表明酸性废水在形成和迁移过程中有次生化合物形成,并对酸水的化学平衡起到一定的控制作用。硫的形态分析结果表明四价硫是可能的中间产物。
In this paper the characteristics of acid mine water generated from weathering of copper mine waste rock have been described according to the survey in situ. The acidity and concentration of some elements in the acid water were higher. Except that the content of some elements released from the rock weathering affected by seasons, it was affected by rainfall, even if in a season. According to the relationship between elements and the molar ratio between sulfur and iron in the acid water, it was considered that some secondary minerals were formed during generation and transportation of the acid water and controlled the chemical equilibria and acidity of the acid water. Tetravalent sulfur might be an important intermediate product during the process of acid generation from pyrite weathering on the basis of sulfur speciation analysed, and it was rapidly oxidized to sexavalent sulfur during transportation of acid water.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1990年第3期15-19,共5页
Environmental Science
