| 铅和镉在粘土衬层中渗透、迁移、转化的研究 |
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| 引用本文： | 刘和平,郑洁明,刘巧丽.铅和镉在粘土衬层中渗透、迁移、转化的研究[J].环境科学研究,1997,10(4):56-60. |
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| 作者姓名： | 刘和平 郑洁明 刘巧丽 |
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| 作者单位： | 中国环境科学研究院,北京 100012 |
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| 摘 要： | 对有毒有害的重金属离子在粘土衬层中自然渗透、迁移、转化进行研究。室内模拟实验表明，铅、镉的二价离子在粘土衬层中的迁移过程中，可生成难溶性的沉淀物质，阻碍了液体的渗透，因而导致了渗透系数比纯水还低。此外，实验还研究了浓度、离子半径对渗透系数、迁移速度的影响。
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| 关 键 词： | 粘土衬层 渗透系数 铅 镉 |
| 收稿时间： | 1995/12/4 0:00:00 |
A Study on Infiltration,Transportation and transformation of Pb and Cd in Compacted Clayliner |
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| LIU Heping,ZHENG Jieming and LIU Qiaoli.A Study on Infiltration,Transportation and transformation of Pb and Cd in Compacted Clayliner[J].Research of Environmental Sciences,1997,10(4):56-60. |
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| Authors: | LIU Heping ZHENG Jieming and LIU Qiaoli |
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| Institution: | Chinese Research Academy of Environmental Sciences,Beijing 100012 |
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| Abstract: | A study on infiltration,transportation and transformation of hazardous and toxic heavy metal ions in compacted clayliner has been carried out.Indoor simulation experiments show that Pb and Cd (Ⅱ) ions,while transportation through the compacted clayliner,may produce indissoluble materials which prevent liquid from infiltrate into the compacted clayliner.Therefore,the permeability coefficients of Pband Cd (Ⅱ) inos would be smaller than that of pure water.In addition,experiments have been further made to study the effects of concentration and ion radius on permeability coefficient and transportation rate. |
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| Keywords: | Clayliner Permeability coefficient Pb Cd |
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