基于Voxler模拟的湖南某在产企业场地重金属污染范围的确定

CONFORMATION OF HEAVY METAL SPATIAL DISTRIBUTION OF AN IN-PRODUCTION ENTERPRISE IN HUNAN BASED ON VOXLER SIMULATION

针对在产企业受到日常生产限制无法网格化全面布点采样,导致污染范围探明存在困难的问题,以湖南省某在产铅冶炼厂为研究对象,利用Voxler软件的空间插值手段结合部分采样数据,对较难取样的重点区域进行数据补充,并绘制特征污染物的空间分布范围图。结果表明:本研究中Voxler空间模型的应用,一方面直观表征污染分布情况,能有效填补在产企业详查内容的欠缺;另一方面,Voxler与传统二维分析模型对比能够提供更为准确的土壤污染体量。结果显示:厂区整体存在铅污染,超标污染土壤体量约为34万m^(3),在熔炼区、制酸区、原料堆存区下方还存在砷、镉、铅的复合污染,超标污染土壤体量约13万m^(3)。空间范围的精准定位和污染体积的精准测算,可为后续在在产企业风险评估及污染控制方案从经济和技术角度提供设计支撑。

The in-production enterprise cannot layout sampling by grid comprehensively,due to the daily production,which leads to difficulties in identifying the spatial distribution of contamination.The article took a Hunan lead processing enterprise as the research object,using the spatial interpolation method of Voxler to supplement the blank area based on the detected results of the sampling points,and then drawing the spatial distribution map of the characteristic contaminants.The application of the Voxler spatial model showed the results as follows:on the one hand,Voxler could visually characterize the distribution of contaminants,and effectively fill in the lack of detailed inspection contents;on the other hand,compared with the traditional 2-D analysis model,it could provide more accurate area result of the contaminated soil.There was lead pollution in the entire factory area,and the area of contaminated soil exceeding the standard was about 340000 m^(3).The composite pollution of arsenic,cadmium,and lead under the smelting area,acid production area,and raw material storage area,had the volume calculated as about 130000 m^(3).The precise positioning and the precise measurement can provide design support for the later risk assessment and pollution control of similar enterprises.