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某废弃铀矿周边农田土壤重金属和放射性元素的风险分析和修复措施

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施宸皓, 梁婕, 曾光明, 袁玉洁, 钟敏洲, 张立华. 某废弃铀矿周边农田土壤重金属和放射性元素的风险分析和修复措施[J]. 环境工程学报, 2018, 12(1): 213-219. doi: 10.12030/j.cjee.201701006
引用本文: 施宸皓, 梁婕, 曾光明, 袁玉洁, 钟敏洲, 张立华. 某废弃铀矿周边农田土壤重金属和放射性元素的风险分析和修复措施[J]. 环境工程学报, 2018, 12(1): 213-219. doi: 10.12030/j.cjee.201701006
shu
SHI Chenhao, LIANG Jie, ZENG Guangming, YUAN Yujie, ZHONG Minzhou, ZHANG Lihua. Assessment of heavy metal and radionuclide pollution risk in farmland around an abandoned uranium mine and its related remediation measures[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 213-219. doi: 10.12030/j.cjee.201701006
Citation: SHI Chenhao, LIANG Jie, ZENG Guangming, YUAN Yujie, ZHONG Minzhou, ZHANG Lihua. Assessment of heavy metal and radionuclide pollution risk in farmland around an abandoned uranium mine and its related remediation measures[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 213-219. doi: 10.12030/j.cjee.201701006
shu

某废弃铀矿周边农田土壤重金属和放射性元素的风险分析和修复措施

  • 1.

    核工业北京地质研究院,北京 100029

  • 2.

    湖南大学环境科学与工程学院,长沙 410082

  • 基金项目:

    〖ZK

Assessment of heavy metal and radionuclide pollution risk in farmland around an abandoned uranium mine and its related remediation measures

  • 1.

    Beijing Research Institute of Uranium Geology, Beijing 100029, China

  • 2.

    College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

  • Fund Project:

  • 摘要: 在某废弃的铀矿周围农田选取10个土壤样点,采集表层土壤下(0~60 cm)不同深度的60个土壤样品,分析其中重金属和放射性元素污染水平,并进行污染修复方案设计。结果表明:Pb、Cd、Cu、Zn、As、Hg、Cr、Mn、Ni、U和232Th的平均浓度分别为2 275.69、6.09、71.51、1 230.47、47.87、502.81、46.22、422.39、12.01、74.05和27.28 mg·kg-1,Pb、Cd、Cu、Zn、As、Hg和U的浓度高于研究区域土壤环境背景值,原采矿场和原堆积矿场是重点污染区域；地累积指数(Igeo)显示农田Hg处于高污染水平,Cd、Zn、Pb和U处于中度污染水平以上。采用覆土、钝化和植物修复相结合的方法进行原矿区场地修复。在原矿区场地加入钝化剂或植物提取修复之前进行覆土。结果表明原采矿场、原堆积矿场分别覆土140和120 cm,氡析出率≤0.74 Bq·(m2·s)-1,γ射线剂量率接近30×10-8 Gy·h-1。结果满足环境标准要求。
    Abstract: Sixty soil samples of farmland around an abandoned uranium mine were collected from 10 sites samples under the surface soils (0 to 60 cm) to investigate the risk of heavy metal and radionuclide pollution and design the related remediation measures. The results showed that the mean concentrations of Pb, Cd, Cu, Zn, As, Hg, Cr, Mn, Ni, U, and232Th were 2 275.69,6.09,1.51,1 230.47,7.87,2.81,6.22,2.39,2.01,4.05 and 27.28 mg·kg-1, respectively. The concentrations of Pb, Cd, Cu, Zn, As, Hg and U were higher than the soil environmental background values in study area. The original mine stope and original mineral ore stockyard were the a key polluted areas. The geo-accumulation index (Igeo) showed that Hg in farmland was in strongly polluted level, and Cd, Zn, Pb and U were higher than moderately polluted level. Covering soil, passivation and phytoremediation were applied to remedy the polluted sites. Soils should be covered in the original mine site firstly and then the passivator was added or the phytoextraction was conducted. The result showed that radon exhalation rate was below or equal to 0.74 Bq·(m2·s)-1, and gamma-ray dose rate was close to 30×10-8Gy·h-1 in the original mine stope and original mineral ore stockyard after covering with soils of 140 cm, 120 cm, which was in accordance with environmental standards.
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  • 刊出日期:  2018-01-14
施宸皓, 梁婕, 曾光明, 袁玉洁, 钟敏洲, 张立华. 某废弃铀矿周边农田土壤重金属和放射性元素的风险分析和修复措施[J]. 环境工程学报, 2018, 12(1): 213-219. doi: 10.12030/j.cjee.201701006
引用本文: 施宸皓, 梁婕, 曾光明, 袁玉洁, 钟敏洲, 张立华. 某废弃铀矿周边农田土壤重金属和放射性元素的风险分析和修复措施[J]. 环境工程学报, 2018, 12(1): 213-219. doi: 10.12030/j.cjee.201701006
shu
SHI Chenhao, LIANG Jie, ZENG Guangming, YUAN Yujie, ZHONG Minzhou, ZHANG Lihua. Assessment of heavy metal and radionuclide pollution risk in farmland around an abandoned uranium mine and its related remediation measures[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 213-219. doi: 10.12030/j.cjee.201701006
Citation: SHI Chenhao, LIANG Jie, ZENG Guangming, YUAN Yujie, ZHONG Minzhou, ZHANG Lihua. Assessment of heavy metal and radionuclide pollution risk in farmland around an abandoned uranium mine and its related remediation measures[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 213-219. doi: 10.12030/j.cjee.201701006
shu

某废弃铀矿周边农田土壤重金属和放射性元素的风险分析和修复措施

  • 1. 核工业北京地质研究院,北京 100029
  • 2. 湖南大学环境科学与工程学院,长沙 410082
基金项目:

〖ZK

摘要: 在某废弃的铀矿周围农田选取10个土壤样点,采集表层土壤下(0~60 cm)不同深度的60个土壤样品,分析其中重金属和放射性元素污染水平,并进行污染修复方案设计。结果表明:Pb、Cd、Cu、Zn、As、Hg、Cr、Mn、Ni、U和232Th的平均浓度分别为2 275.69、6.09、71.51、1 230.47、47.87、502.81、46.22、422.39、12.01、74.05和27.28 mg·kg-1,Pb、Cd、Cu、Zn、As、Hg和U的浓度高于研究区域土壤环境背景值,原采矿场和原堆积矿场是重点污染区域；地累积指数(Igeo)显示农田Hg处于高污染水平,Cd、Zn、Pb和U处于中度污染水平以上。采用覆土、钝化和植物修复相结合的方法进行原矿区场地修复。在原矿区场地加入钝化剂或植物提取修复之前进行覆土。结果表明原采矿场、原堆积矿场分别覆土140和120 cm,氡析出率≤0.74 Bq·(m2·s)-1,γ射线剂量率接近30×10-8 Gy·h-1。结果满足环境标准要求。

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