Abstract:

The acid mine wastewater is characterized as high sulfate content, low pH and heavy metal ions, which are difficult to be treated. The experimental study is carried out to investigate the effect of medical stone as microbial immobilized matrix material on the biological activity and chromium ion removal. The results show that the average removal rates of SO₄^2-, Cr⁶⁺ and Cr³⁺ by No.1 immobilized particle-containing medical stone are 91.37%, 70.1% and 64.1%, respectively. Compared to No. 2 particle without medical stone, No. 1 particle has better biological activity and higher ability to remove chromium ions and regulate pH.

Key words: medical stone, acid mine wastewater, microorganism, immobilization

摘要：

针对酸性矿山废水中硫酸盐含量高、pH低，且含有难去除重金属离子等特点，以麦饭石作为微生物固定化基质材料，开展了生物活性及铬离子去除的试验研究。结果表明，含麦饭石的1号固定化颗粒对SO₄^2-、Cr⁶⁺和Cr³⁺的平均去除率分别为91.37%、70.1%、64.1%。与无麦饭石的2号颗粒相比，1号颗粒具有更好的生物活性、去除铬离子和调节pH的能力。

关键词: 麦饭石, 酸性矿山废水, 微生物, 固定化

CLC Number: 

• X703