赤泥堆场污染物对地下水环境的影响研究

Study on influence of pollutants in red mud yard on groundwater environment

氧化铝厂产生的赤泥如果处置不当,其渗滤液会导致地下水的严重污染。为确定其渗漏液对地下水的影响,本文以遵义氧化铝厂为例,选择赤泥堆场底部防渗层破损5%面积的场景,以氟化物作为预测因子,采用一维稳定流动二维水动力弥散解析解方程--平面连续点源模型进行模拟,分析赤泥堆场底部防渗层破损的情况下,对地下水的影响。模拟结果表明,在天然流场中,如不考虑地下水大量开采情况,污染物不会对下游保护目标产生影响。本文成果为以后类似问题处置提供了参考。

If the red mud produced by alumina plant is not disposed properly,its leachate will lead to serious pollution of groundwater.In order to determine the influence of its leachate on groundwater.In this paper,Zunyi alumina plant is taken as an example,the scene of 5%area damage of the bottom impervious layer of red mud storage yard is selected,fluoride is taken as a prediction factor,and one-dimensional steady flow two-dimensional hydrodynamic dispersion analytical solution equation-plane continuous point source model is adopted for simulation,so as to analyze the influence on groundwater when the bottom impervious layer of red mud storage yard is damaged.According to the simulation results,in the natural flow field,if the large amount of groundwater exploitation is not considered,pollutants will not affect the downstream protection targets.It provides a reference for similar problems in the future.