Choi Jaeyoung, Kwon Dongwook, Yang Jung-Seek, Lee Ju Young, Park Young-Tae
Korea Institute of Science and Technology (KIST)--Gangneung Institute, Gangneung, South Korea.
Environ Technol. 2009 Apr 14;30(5):445-54. doi: 10.1080/09593330902767776.
This study investigated the potential for utilizing six treatment agents (two limestones, sand, starfish, black shale, and concrete as treatment agents for acid mine drainage (AMD) wastewater. These materials, with a high capacity for heavy metals, can be obtained and employed as alternative low-cost limiting substitutes. For investigating the neutralization capacity, the change in pH, Eh, and EC as a function of time was quantified. Of the treatment agents, concrete showed the highest neutralization efficiency for AMD and maintained the pH value above 11. Results of column studies demonstrated that the removal rate of Fe and Mn by the tested agents was influenced by their chemical compositions. The experimental results of desorption revealed that when adsorption or precipitation occurs, there were no significant releases from the adsorbing agents. In this study, the results suggest that concrete can be used successfully in the treatment of acid mine drainages with mixed metal-contaminated wastes.
本研究调查了利用六种处理剂（两种石灰石、沙子、海星、黑色页岩和混凝土）处理酸性矿山排水（AMD）废水的潜力。这些材料对重金属具有高容量，可获取并用作替代低成本的限制替代品。为了研究中和能力，对pH、Eh和EC随时间的变化进行了量化。在这些处理剂中，混凝土对AMD显示出最高的中和效率，并将pH值维持在11以上。柱实验结果表明，受试处理剂对铁和锰的去除率受其化学成分影响。解吸实验结果表明，当发生吸附或沉淀时，吸附剂不会有显著释放。在本研究中，结果表明混凝土可成功用于处理混合金属污染废物的酸性矿山排水。
