铬渣渗滤液中六价铬在地下水中迁移模拟

doi:10.16182/j.issn1004731x.joss.201802024

摘要/Abstract

摘要： 以沈阳铬渣堆场为研究对象,进行静态吸附实验和动态土柱实验,分析铬渣渗滤液中Cr(Ⅵ)在地下水系统中的吸附特征和运移规律,建立Cr(Ⅵ)在地下水系统中运移的耦合动力学数学模型,运用Visual Modflow软件模拟了铬渣堆场采取防渗措施前40年和防渗后60年地下水污染情况及Cr(Ⅵ)运移情况,结合现场地下水监测数据进行了可靠性验证。结果表明,Cr(Ⅵ)浓度变化趋势及模拟值与监测结果基本吻合,从而验证了模型的可靠性和实用性。

关键词: 铬渣渗滤液, 土柱实验, 数值模拟, 耦合模型, 地下水污染

Abstract: Taking chromite ore processing residue site in Shenyang city of Liaoning province as a research object, the static adsorption experiment and the dynamic soil column experiment were carried out, and the adsorption characteristics and the migration law for hexavalent chromium of chromite ore processing residue leachate were analyzed in the groundwater system. A coupled dynamic mathematical model was developed for simulating hexavalent chromium migration in the groundwater system. Numerical simulation of hexavalent chromium migration in groundwater for 40 years before the anti-seepage measure and for 60 years after the anti-seepage measure was completed by using Visual Modflow software. The field groundwater monitoring data of water quality was used to provide a quantitative verification. The results indicate that numerical simulation results of hexavalent chromium concentration agree with the monitoring data more or less, which verifies the model is reliable and practical.

Key words: chromite ore processing residue leachate, soil column experiment, numerical simulation, coupled model, groundwater pollution

中图分类号:

P641.2

刘玲, 肖利萍, 李喜林. 铬渣渗滤液中六价铬在地下水中迁移模拟[J]. 系统仿真学报, 2018, 30(2): 560-568.

Liu Ling, Xiao Liping, Li Xilin. Simulation of Migration of Hexavalent Chromium in Groundwater[J]. Journal of System Simulation, 2018, 30(2): 560-568.

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