| 危险废物填埋土壤中的重金属污染扩散特征分析 |
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| 引用本文： | 王文琦,丁艳华,李 芬.危险废物填埋土壤中的重金属污染扩散特征分析[J].中州煤炭,2022,0(4):52-57. |
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| 作者姓名： | 王文琦 丁艳华 李 芬 |
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| 作者单位： | 中南安全环境技术研究院股份有限公司，湖北 武汉 430071 |
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| 摘 要： | 针对Calpuff模型、主成分分析法缺少对气候条件和特定条件下的空间污染特征分析导致扩散模拟结果不精准的问题，提出了危险废物填埋土壤中的重金属污染扩散特征分析方法。确定污染区域，分析该地区的风速风向、温度。通过分析各地区重金属污染分布情况，计算各区域元素的平均污染指数，建立扩散模型。根据这一模型求得采样点与污染源之间的距离，并以此距离精确计算采样点土壤受污染程度。以富集系数为主要的参数指标测量土壤和沉积物中的重金属含量，按富集系数大小划分污染程度等级，完成重金属污染扩散特征分析。由扩散模拟分析结果可知，该方法与实际全年超标率基本一致，最大误差为0.1%，为危险废物填埋提供了数据支持。
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| 关 键 词： | 危险废物填埋 重金属 污染 扩散特征 富集系数 |
Analysis on heavy metal pollution diffusion characteristics in hazardous waste landfill soil |
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| Wang Wenqi,Ding Yanhua,Li Fen. Analysis on heavy metal pollution diffusion characteristics in hazardous waste landfill soil[J].Zhongzhou Coal,2022,0(4):52-57. |
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| Authors: | Wang Wenqi Ding Yanhua Li Fen |
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| Affiliation: | Zhongnan Institute of Safety and Environment Technology Co.，Ltd.，Wuhan 430071，China |
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| Abstract: | In view of the lack of the Calpuff model and principal component analysis method to analyze the characteristics of spatial pollution under climatic conditions and specific conditions，resulting in inaccurate diffusion simulation results，a method for analyzing the diffusion characteristics of heavy metal pollution in hazardous waste landfill soil was proposed.Identify the contaminated area and analyze the wind speed，direction and temperature of the area.By analyzing the distribution of heavy metal pollution in various regions，calculating the average pollution index of the elements in each region，and establishing a diffusion model.According to this model，the distance between the sampling point and the pollution source was obtained，and the degree of contamination of the soil at the sampling point was calculated accurately based on this distance.The enrichment coefficient was used as the main parameter to measure the content of heavy metals in soil and sediment，and the pollution degree was classified according to the enrichment coefficient，and the analysis of the diffusion characteristics of heavy metal pollution was completed.It can be seen from the results of diffusion simulation analysis that this method is basically consistent with the actual annual over-standard rate，with a maximum error of 0.1%，which provides data support for hazardous waste landfills. |
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| Keywords: | ,hazardous waste landfill, heavy metals, pollution, diffusion characteristics, enrichment coefficient |
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