| 分级分筛式异位重金属污染土壤淋洗技术 |
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| 引用本文： | 徐持平,周卫军,徐庆国.分级分筛式异位重金属污染土壤淋洗技术[J].基因组学与应用生物学,2019(7):3002-3008. |
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| 作者姓名： | 徐持平 周卫军 徐庆国 |
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| 作者单位： | 湖南农业大学资源环境学院;湖南生物机电职业技术学院;湖南农业大学农学院 |
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| 基金项目： | 湖南省教育科学“十三五”规划课题(XJK016CZY048);国家教育部创新团队发展计划项目(IRT1239);湖南省级研究生精品课程项目(KC2011B023)共同资助 |
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| 摘 要： | 本研究采用去离子水作淋洗剂,开发一种分级分筛式异位重金属污染土壤淋洗技术,研究显示,土壤中粒径大于25μm颗粒占比接近80%,重金属Pb、Cu、Ni、Cd和Cr含量分别为125.85 mg/kg、85.93 mg/kg、63.29 mg/kg、1.31 mg/kg和108.39 mg/kg,基本符合土壤环境质量二级标准,可用于农田回用土;土壤中粒径小于25μm颗粒占比低于20%,其对应重金属含量超出土壤环境质量三级标准,可用作制砖原料。
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| 关 键 词： | 分级分筛 重金属 土壤 淋洗 |
Soil Leaching Technology for Graded Sieve-type Eutopic Heavy Metal Pollution |
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| Xu Chiping,Zhou Weijun,Xu Qingguo.Soil Leaching Technology for Graded Sieve-type Eutopic Heavy Metal Pollution[J].Genomics and Applied Biology,2019(7):3002-3008. |
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| Authors: | Xu Chiping Zhou Weijun Xu Qingguo |
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| Institution: | (College of Resources and Environment,Hunan Agricultural University,Changsha,410128;Hunan Biological and Electromechanical Polytechnic,Changsha,410127;College of Agriculture,Hunan Agricultural University,Changsha,410128) |
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| Abstract: | In this study,deionized water was used as eluent to develop a graded screen type of soil heavy metal pollution ectopic leaching technology.The results show that the soil particle size greater than 25μm particles accounted for nearly 80%,and the contents of heavy metals Pb,Cu,Ni,Cd and Cr were 125.85 mg/kg,85.93 mg/kg,63.29 mg/kg,1.31 mg/kg and 108.39 mg/kg respectively,basically meeting the second level standard of soil environmental quality,which can be used for soil to farmland.Soil particle size less than 25μm accounted for less than 20%,and the content of heavy metals exceeded third level standard of soil environmental quality,which can be used as brick making raw materials. |
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| Keywords: | Grading sieve Heavy metal Soil Leaching |
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