含铬污液在土壤中迁移规律的研究

Study on the Migration of Chromium in Soil

通过静态吸附和动态土柱淋溶实验 ,研究了含铬污液中Cr(III)、Cr(VI)在土壤中的迁移规律。结果表明 ,土壤对Cr(III)、Cr(VI)的等温吸附过程均符合Langmuir方程 ,土壤对Cr(III)、Cr(VI)的饱和吸附量分别为 2 .1 7×1 0 4 mg/kg、1 75mg/kg;动态截留量分别为 7.0 0×1 0 3 mg/kg、56.7mg/kg。

The migration of Cr(III) and Cr(VI) from wastewater was studied by static and continuous flow leaching tests.The results showed that the adsorption isotherms of soil to Cr(III ) and Cr(VI) corresponded with Langmuir equation. The saturated adsorption contents of soil to Cr(III) and Cr(VI) were 2.17×10 4mg/kg and 175mg/kg respectively, and the continuous flow adsorption contents were 7.00×10 3mg/kg and 56.7mg/kg respectively.