【摘要】 铊(Tl)是一种典型的毒害性重金属,其毒性远大于Hg、Cd、Cu、Pb、Zn等元素。大量含Tl矿产的开采和冶炼活动,导致Tl及其化合物不断进入环境,造成水体、土壤和作物中的铊含量剧增,通过食物链直接对人体健康造成威胁。对全国范围内含铊矿床的分布及其开发过程中带来的环境影响进行了概述与分析,并针对废水中铊的特性,利用黄铁矿废渣去除酸性废水中的铊,去除率达到95%以上。更多还原

【Abstract】 Thallium(Tl) is a kind of typical toxic heavy metal,its toxicity is larger more than Hg,Cd,Cu,Pb,Zn and so on. A large number of Tl minerals from mining and smelting,lead to Tl and its compounds into the environment,increasing thallium content of water,soil and crop which can be directly posed a threat to human health through the food chain. The distribution of thallium containing deposit in nationwide and its influence to the environment in the development process were summarized and analyzed. According to the characteristics of thallium in wastewater,we use pyrite slag to remove thallium in acidic wastewater,and the removal rate is over 95%.更多还原