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DOI:
有色金属(矿山部分):2020,72(4):115-119
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赣州某稀土冶炼场地重金属污染特征
孟磊, 王琼, 祝怡斌, 霍汉鑫, 李昊, 杨越晴, 史怡
(1.北京矿冶科技集团有限公司;2.中国环境科学研究院 环境基准与风险评估国家重点实验室)
Pollution Characteristics of Heavy Metals in Rare Earth Smelt Plant in Ganzhou
MENG Lei,WANG Qiong, ZHU Yibin, HUO Hanxin, LI Hao, YANG Yueqing, SHI Yi
(1.BGRIMM Technology Group;2.State Key Laboratory of Environmental Criteria and Risk Assesment, Chinese Research Academy of Environmental Science, Beijing 100012, China)
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投稿时间:2020-04-13    修订日期:2020-04-20
中文摘要: 选取赣州某遗留废弃稀土冶炼厂为研究对象,调查研究场地废水和土壤重金属污染特征,应用单因子指数法和内梅罗综合污染指数法评价其污染状况,并对重金属相关性进行分析。结果表明:稀土冶炼废水中重金属Ni和Hg高于其参比值,土壤中重金属含量均高于背景值。单因子指数法评价结果表明废水中Ni为重污染到严重污染,Hg为轻污染,各产污节点内梅罗综合污染指数为严重污染。土壤中Hg和Cd的平均单项污染指数为中度污染,其他的平均单项污染指数均为轻微污染,各污染物平均内梅罗综合污染指数达重污染水平。相关性分析结果表明废水中Hg和Ni污染具有同源性,土壤中各重金属元素呈极显著相关和显著相关性,污染主要来自冶炼过程中扬尘、原料堆放和泄漏。
中文关键词: 稀土冶炼厂  废水  土壤  重金属  污染特征
Abstract:In order to investigate the pollution characteristics of heavy metals in a typical abandoned rare earth smelt plant in Ganzhou. Single factor pollution index method and Nemerow integrated index method were used to evaluate the status of heavy metal pollution and analyze the heavy metal correlation. The results show that nickel and mercury in the water are higher than reference values. The metal contents in soils exceed the background levels. The results of single factor pollution index method shows that the pollution degree of Ni in water is heavy to severe polluted, and Hg is light, and the pollution degrees of Hg and Cd in soil samples is medium polluted,and others are light. The Nemerow integrated index results suggest that the pollution degrees of water are the heavy. The Nemerow integrated index of soil samples is heavy polluted. Pearson" s correlation analysis revealed that the pollution of Ni and Hg in water were from same source, and heavy metals in soils were extremely and obviously correlated, which were from dust, raw material stacking and leakage in smelting.
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孟磊,王琼,祝怡斌,霍汉鑫,李昊,杨越晴,史怡.赣州某稀土冶炼场地重金属污染特征[J].有色金属(矿山部分),2020,72(4):115-119.
MENG Lei,WANG Qiong,ZHU Yibin,HUO Hanxin,LI Hao,YANG Yueqing,SHI Yi.Pollution Characteristics of Heavy Metals in Rare Earth Smelt Plant in Ganzhou[J].NONFERROUS METALS(Mining Section),2020,72(4):115-119.

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