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《Environmental Science Survey》 2015-02
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Impact Assessment of Heavy Metal Pollution of a Copper Ore Mine Tailings Pond on the Surrounding Environment

CHEN Wen-tao;XU Hong-jiao;ZHANG Nai-ming;KANG Ri-feng;College of Recourse and Environmental Science of Yunnan Agricultural University;  
The content of five heavy metals of copper,zinc,lead,cadmium,and chrome in the soil and water body near a copper ore mine tailings pond was evaluated using fuzzy comprehensive evaluation method. The chemical forms of the heavy metals in the soil were analyzed as well. The results showed that the heavy metal pollution in water and soil occurred in a different degree. The soil right under the mine tailings pond was contaminated seriously to reach the fifth class and the major pollutant was copper. The soil near the pond was less polluted to meet the fourth class with the highest concentration of cadmium. The soil in a further downstream of underwater was least contaminated to meet the third class with the same main pollutant of cadmium. The Fe- Mn oxides fraction,residual,and exchangeable forms of heavy metals was mostly found in the slag soil. The proportion of exchangeable form of copper is low( around 0. 24%). The water in the pond,the leakage water under the pond,and the downstream water body were all seriously contaminated to reach the fifth class. Copper,lead,and cadmium were mostly found in the water of the pond. Meanwhile,cadmium was the major pollutant in the leakage water under the pond and the downstream water body.
【Fund】: 云南省科技计划项目云南藏区矿产开发对环境的影响及防控技术应用研究(2010CA010)
【CateGory Index】: X82
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