淋滤条件下铅锌尾矿中重金属对环境影响研究  

The Study on the Effect of Heavy Metal from Lead and Zinc Tailings on Environment under the Leaching Condition

作　　者：陈华君[1] 胡若鹏 邓竞超[1] 

机构地区：[1]昆明冶金研究院,云南昆明650031 [2]云南省固体废物管理中心,云南昆明650032

出　　处：《云南冶金》2016年第1期56-63,共8页Yunnan Metallurgy

基　　金：国家自然科学基金云南联合基金(U1402234)

摘　　要：铅锌尾矿对尾矿库区及周边环境造成了严重的重金属污染影响。通过云南省典型浮选铅锌尾矿属性判定及淋滤实验,研究铅锌尾矿中重金属对环境的影响规律。结果表明,实验用尾矿均为一般工业固体废物;尾矿在强降雨条件淋漓液p H值呈中性或弱碱性;尾矿淋漓液中Zn、Pb、Cd、Cr浓度均随淋漓处理酸性加强而增大,碱性淋漓处理后,尾矿淋漓液中Zn、Pb浓度随着时间延长而显著减少,Cd、Cr浓度则无显著变化。说明铅锌尾矿堆存对环境风险小,但在酸性条件可能增加尾矿中重金属的环境风险。The lead and zinc tailings caused the serious heavy-metal pollution to the mining tailings wasteland and the surroumt- ing environment. The influence rule of the heavy metal in lead and zinc tailings to environment is studied through the attribute determination of the typical flotation lead and zinc tailings and leaching test. The results show, the experimental tailings are all the normal industry solid waste; the pH value of tailings＇leaehing liquid under heavy rainfall condition presents neutral or alkaleseenee; the Zn, Pb, Cd, Cr concen- tration in railings＇ leaching liquid is increased along with the increasing of leaching treatment acidity, after alkali leaching treatment, the Zn. Pb concentration is observably decreased along with the time extension, but the Cd, Cr concentration has no significant change. The stock- piling of lead and zinc tailings has small risk to environment, but the acid condition maybe increase the heavy metal risk in lailings to the en- vironment.

关 键 词：铅锌矿 尾矿 重金属 环境污染 

分 类 号：X758[环境科学与工程—环境工程]