赣州某稀土冶炼场地重金属污染特征  

Pollution characteristics of heavy metals in a rare earth smelt plant in Ganzhou

作　　者：孟磊 王琼 祝怡斌 霍汉鑫 李昊 杨越晴 史怡[2] MENG Lei;WANG Qiong;ZHU Yibin;HUO Hanxin;LI Hao;YANG Yueqing;SHI Yi(BGRIMM Technology Group,Beijing 100160,China;State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Science,Beijing 100012,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [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,北京100012

出　　处：《有色金属（矿山部分）》2020年第4期115-119,共5页NONFERROUS METALS(Mining Section）

基　　金：中央级公益性科研院所基本科研业务专项(JY-201409047);北京矿冶科技集团青年科研基金项目(QCJ201825)。

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的扬尘、原料堆放和泄漏。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 showed that nickel and mercury in the water were higher than the reference values.The metal contents in soils exceeded the background levels.The results of single factor pollution index method showed that the pollution degree of Ni in water was heavy to severe polluted,and Hg was light,and the pollution degrees of Hg and Cd in soil samples was medium and other heavy metals were light.The Nemerow integrated index results suggested that the pollution degrees of water were heavy.The Nemerow integrated index of soil samples was heavy polluted.Pearson's correlation analysis revealed that the pollution of Ni and Hg in water were from the same source,and heavy metals in soils were correlated extremely and obviously,which were from dust,raw material stacking and leakage in smelting.

关 键 词：稀土冶炼厂 废水 土壤 重金属 污染特征 

分 类 号：X53[环境科学与工程—环境工程] X825