典型电镀场地重金属污染程度综合评价分析

针对污染程度评价研究中存在的单一指数评价不全面、空间分析不足的问题，基于电镀场地调查报告、遥感影像等数据，综合多种污染指数构建场地综合评价空间模型对电镀场地的污染程度进行综合评价，分析土壤重金属污染分布情况。结果显示：电镀场地中Cr、Ni、Zn、Cu浓度较高，污染超标情况较为突出；其他重金属元素浓度较低，不存在超标情况。各场地不同污染指数空间分布一致性较高，但也存在差异性。在综合评价值空间分布中，各场地功能区分布差异较大，其中污水处理区和电镀车间区的综合值较高。单一指数评价内容较为片面，通过综合评价模型可更全面分析场地污染分布，为场地未来开发提供参考依据。

Comprehensive evaluation and analysis of heavy metal pollution degree in typical electroplating sites

In view of the problems of incomplete single index evaluation and insufficient spatial analysis in the pollution degree evaluation study, a comprehensive evaluation spatial model was built based on three pollution indexes to carry out research in the electroplating site. Based on the survey report of the electroplating site, remote sensing images and other data, a comprehensive evaluation spatial model was built to comprehensively evaluate the pollution degree and analyze the pollution distribution of the electroplating site. The results show that the concentration of Cr, Ni, Zn, and Cu elements in electroplating sites are relatively high, and the pollution exceeding standard is more prominent; The concentration of other heavy metal elements are relatively low, and there is no situation of exceeding the standard. The spatial distribution of different pollution indexes in different sites have high consistency, but there are also differences. In the spatial distribution of comprehensive evaluation values, there are significant differences in the distribution of functional areas among different sites, with the sewage treatment area and electroplating workshop area having higher comprehensive value. The evaluation content of a single index is relatively one-sided, and a comprehensive evaluation model can provide a more comprehensive analysis of the distribution of site pollution, providing a reference basis for future development of the site.