碳酸盐岩煅烧改性处理酸性矿山废水的研究  

Study on acid mine drainage treatment with modified carbonate rocks

作　　者：陈亚[1] 张瑞雪[1,2] 吴攀[1,2] 郁孟洁 

机构地区：[1]贵州大学资源与环境工程学院,贵州贵阳550025 [2]贵州大学矿山环境治理工程技术中心,贵州贵阳550025

出　　处：《环境污染与防治》2015年第1期62-67,共6页Environmental Pollution & Control

基　　金：贵州省社发攻关项目(黔科合SY字[2014]3042);贵州省科技创新人才团队建设项目(黔科合人才团队[2012]4005)

摘　　要：将碳酸盐岩在不同温度下进行煅烧改性,在保持颗粒机械强度的条件下将其应用于酸性矿山废水(AMD)的处理。结果表明,碳酸盐岩在600℃下煅烧基本不产生变化,当升至750℃时,碳酸盐岩开始分解,煅烧3.0h后,烧失量为1.86%,煅烧后产物仍保持较强颗粒强度。800℃以上煅烧的碳酸盐岩则出现颗粒断裂现象,放入AMD中会立即溶解产生白色沉淀。在750℃煅烧改性后的碳酸盐岩能有效提高AMD的pH,对各种金属离子都有非常好的去除效果,尤其克服了原岩对Mn2+去除效果不佳的缺点;将750℃煅烧改性后的碳酸盐岩应用到野外AMD处理工程中,能有效减少处理构筑物的体积和占地面积,从而降低建设成本。The carbonate rocks were calcined at different temperatures,in the condition of keeping particle strength,to treat acid mine drainage（AMD）.The results showed that carbonate rocks calcined at 600 ℃ had not changed while it began to decompose at 750 ℃,which remained strong particles intensity,weightlessness rate reached1.86%.However,at the constant temperature of 800 ℃,carbonate rocks began to particle fracture,white precipitate immediately generated once rocks contacted with AMD.Carbonate rocks calcined at 750 ℃ could effectively improve the pH of AMD.And it has very good effect on the removal of metal ions.The modification could reduce the amount of rocks used in AMD treatment,and meanwhile could overcome the disadvantage of poor removal effect of manganese.The carbonate rocks calcined at 750 ℃ were applied to the field AMD treatment projects,the volume,area processing structures and construction costs was effectively reduced.

关 键 词：碳酸盐岩 煅烧改性 酸性矿山废水 除锰 

分 类 号：X751[环境科学与工程—环境工程]