水资源与水工程学报2016，Vol.27Issue(2)：237-240,4.DOI:10.11705/j.issn.1672-643X.2016.02.44
重金属污染物在土壤中的扩散规律及埋置策略研究
Study on diffusion law of heavy metal in soil and its buried strategy
摘要
Abstract
In order to investigate the diffusion law of heavy metal pollutants in soil, the paper deduced the effect law of space, time and diffusion coefficient on the pollutant concentration of heavy metal around the buried point based on three-dimensional diffusion equation. It also analyzed the influence of differ-ences between two buried methods such as namely centralized and decentralized buried approaches on pollutant concentration distribution of heavy metal. The results show that when the other conditions are the same, the concentration of a spatial position increases first and then decrease with the increase of both diffusion time and diffusion coefficient,and Finally the curve tends to be gentle;when the diffusion time keeps constant, the concentration decreases with the increase of diffusion radius, and trends to zero at the end. After comparing three different buried methods, it found that the fewer the buried points, the higher the nearby concentration, and the more buried points, the lower the concentration at far positions.关键词
土壤/重金属/污染物扩散/集中埋置/分散埋置Key words
soil/heavy metal/pollution diffusion/centralized buried appoache/decentralized buried appoache分类
资源环境引用本文复制引用
郭鸿,高斌,陈茜..重金属污染物在土壤中的扩散规律及埋置策略研究[J].水资源与水工程学报,2016,27(2):237-240,4.基金项目
陕西省教育厅专项科研计划项目(15JK1117) （15JK1117）
