典型铅冶炼厂铅的空间分布特征及吸附规律研究

Research on the Spatial Distribution Characteristics and Adsorption Laws of Lead in Typical Lead Smelters

本文指出铅冶炼厂废弃后堆积存放的冶炼渣仍对环境产生持续且严重的污染行为,为此本文旨在探究冶炼厂土壤中主要污染物铅在不同土壤深度的空间分布特征并对其吸附行为进行研究。结果表明:冶炼厂土壤中平均铅含量为1921.77 mg/kg,表层土壤超标率达51%,最大值高出河南省土壤背景值的725倍,且铅含量随着土壤深度的增加而逐渐降低;表层土壤铅含量空间差异大,西北方向(即厂房所在地)土壤污染严重,功能分区对铅污染有显著影响。本文进一步通过吸附实验探究了铅的质量浓度对吸附量的影响,该研究结果能够为冶炼厂土壤铅污染的修复治理提供一定的理论依据。

This paper points out that the accumulated smelting slag from abandoned lead smelters still causes continuous and serious environmental pollution.Therefore,this paper aims to explore the spatial distribution characteristics of the main pollutant lead in the soil of smelters at different soil depths and study its adsorption behavior.The results show that the average lead content in the soil of the smelter is 1921.77 mg/kg,and the surface soil exceeded the standard by 51%.The maximum value is 725 times higher than the background value of the soil in Henan Province,and the lead content gradually decreases with the increase of soil depth;There are significant spatial differences in lead content in the surface soil,with severe soil pollution in the northwest direction(i.e.the location of the factory),and functional zoning having a significant impact on lead pollution.This paper further explores the influence of lead mass concentration on adsorption capacity through adsorption experiments,and the research results can provide a certain theoretical basis for the remediation and treatment of lead pollution in smelter soil.