供试土壤氯离子运移实验及模拟研究  

Experimental and Simulation Study on Chloride Ion Migration in Soil

作　　者：刘仍阳 Liu Rengyang(Guizhou Transportation Planning Survey&Design Academe Co.,Ltd.,Guiyang 550000,China)

机构地区：[1]贵州省交通规划勘察设计研究院股份有限公司,贵州贵阳550000

出　　处：《山东化工》2023年第15期257-260,共4页Shandong Chemical Industry

摘　　要：为了研究氯离子在供试土壤中运移及吸附规律,采用室内瞬态氯离子土柱运移实验,获得氯离子在供试土壤中运移的穿透曲线,基于Hydrus-1D对实验结果进行反算,计算氯离子在供试土壤中运移及吸附参数。结果显示,模型对氯离子运移实验结果拟合度高,其RMSE为0.0479,供试土壤的弥散度为0.5 cm,上、下层供试土壤的渗透系数分别为3.992,3.229 cm/h,上、下层供试土壤的等温平衡吸附系数分别为0.2372,2.2186,供试土壤中黏质占比影响供试土壤的透水性及供试土壤对氯离子的吸附能力。In order to study the migration and adsorption of chloride ions in the tested soil,the breakthrough curve of chloride ion migration in the tested soil was obtained by indoor transient chloride ion soil column migration experiment.Based on Hydrus-1D,the experimental results were inversely calculated to calculate the migration and adsorption parameters of chloride ions in the tested soil.The results showed that the model had a high fitting degree to the experimental results of chloride ion migration,with RMSE of 0.0479,the dispersion of the tested soil was 0.5 cm,the permeability coefficients of the upper and lower layers of the tested soil were 3.992 and 3.229 cm/h,respectively,and the isothermal equilibrium adsorption coefficients of the upper and lower layers of the tested soil were 0.2372 and 2.2186,respectively.The proportion of clay in the tested soil affected the permeability of the tested soil and the adsorption capacity of the tested soil to chloride ion.

关 键 词：运移吸附 穿透曲线 弥散度 等温平衡吸附 

分 类 号：X523[环境科学与工程—环境工程]