干旱区排土场重金属污染评价及生态损害估算研究——以某煤矿排土场为例  

Assessment of Heavy Metal Pollution and Estimation of Ecological Damage in Waste Dump in Arid Area——A Case Study of a Coal Mine Waste Dump in Xinjiang

作　　者：罗炳圣 林龙勇 邓一荣 肖荣波 韩存亮[1] Luo Bingsheng;Lin Longyong;Deng Yirong;Xiao Rongbo;Han Cunliang(Guangdong Provincial Academy of Environmental Science, Guangdong Key Laboratory of Contaminated Environmental Management and Remediation, Guangzhou 510045, China;School of Environmental Science and Engineering,Guangdong University of Technology, Guangzhou 510006, China)

机构地区：[1]广东省环境科学研究院,广东省污染场地环境管理与修复重点实验室,广东广州510045 [2]广东工业大学环境科学与工程学院,广东广州510006

出　　处：《环境科学与管理》2022年第1期174-179,共6页Environmental Science and Management

基　　金：国家重点研发计划课题(2018YFC1800200,2018YFC1800800,2018YFC1801403);国家科技支撑计划课题(2014BAC15B01);广州市科技计划项目(201804010424)。

摘　　要：本研究采用地累积指数法和潜在生态危害指数法,对某典型矿区排土场土壤重金属污染现状和生态风险水平做了分析与评价。结果表明调查的七种重金属中仅有Cd超过了风险筛选值,点位超标率达75%,但土壤重金属表聚现象不明显。该排土场的综合潜在生态风险水平为低,但Cd地累积指数达到中度污染水平,Cd单元素潜在生态风险水平为高。通过生态补偿初步估算,本次研究的煤矿排土场按照生态补偿下限计算,2018年生态补偿平均费用为1.95万元/hm^(2)。Igeo and potential ecological risk index were adopted to analyze the pollution status and ecological risk level of seven heavy metals in the soil of a typical mining area.The results showed that only Cd among the seven heavy metals investigated exceeded the risk screening value.The over standard rate reached 75%,but the accumulation of heavy metals in soil was not obvious.The comprehensive potential ecological risk level of the dump is low.But the Cd accumulation index reaches the moderate pollution level,and the potential ecological risk level of Cd single element is high.According to the preliminary estimation of ecological compensation,the average cost of ecological compensation in 2018 is 19500 yuan/hm^(2).

关 键 词：地累积指数 潜在生态危害指数 生态补偿 

分 类 号：X825[环境科学与工程—环境工程]