高浓度砷渣土稳定化/固化效果及其影响因素研究

Study on Stabilization/Solidification Effect of High Concentration Arsenic Residue and Its Influencing Factors

本实验以锑矿冶炼厂内的砷渣土为对象,考察铁系、硫系及氧化钙不同药剂对砷的稳定化作用,筛选出硫酸亚铁和硫酸复合使用的稳定化药剂;并通过考察不同影响因素对砷渣土稳定化效果的影响,确定最佳的工艺参数,处理后渣土能够达到《危险废物填埋污染控制标准》的要求,极大的降低了潜在生态风险。

In this experiment, the arsenic residue in antimony smelter was taken as an object to study the stabilization of arsenic by different reagents of iron, sulphur and calcium oxide, and to screen out the stabilizing reagents of ferrous sulphate and sulphuric acid, and to determine the optimum technological parameters by investigating the influence of different factors on the stabilization of arsenic residue. After treatment, the residue can meet the requirements of "Hazardous Waste Landfill Pollution Control Standard", which greatly reduces the potential ecological risk.