地下水系统砷-铁耦合行为的反应性溶质运移模拟
Reactive Transport Modeling of the Coupled Fate of Arsenic and Iron in Groundwater Systems
查看参考文献57篇
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文摘
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定量厘清砷在铁矿物相转变影响下的释放迁移规律,对破译高砷地下水成因机制至关重要。然而,地下水系统中水文-生物地球化学多过程交互作用极其复杂,因此定量化研究难度大。反应性溶质运移模拟作为一种耦合了生物地球化学过程和水文地质过程的数值模拟方法,可有效解译复杂多过程系统,从而实现观测数据的定量解析。本文介绍了反应性溶质运移模型的主要特点;阐述了影响地下水系统中砷行为的两类关键地球化学过程(铁矿物的氧化/还原过程、砷在矿物表面的吸附/解吸过程)的模拟方法;结合近年来的典型研究案例,分析了模型如何用于识别和量化不同水文-生物地球化学过程对高砷地下水形成和衰减的控制作用;并进一步剖析了当前研究中仍需完善的问题。 |
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其他语种文摘
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A quantitative analysis of how arsenic release and migration occur during iron mineral transformation is essential for deciphering the formation mechanism of arsenic rich groundwater.Nevertheless,groundwater systems are often affected by complex interactions between flow,solute transport and biogeochemical processes,and therefore process-based quantification is challenging.As a numerical modeling method that couples biogeochemical and hydrogeological processes,reactive transport modeling can distill complex systems into their salient components and achieve an in-depth,quantitative analysis of the observation data.In this context,this paper has reviewed the key characteristics of reactive transport models,illustrated how to simulate the two most important geochemical processes that regulate the behavior of arsenic (i.e.,the reduction-oxidation of iron minerals and the adsorption-desorption of arsenic on mineral surfaces),showed how such models can aid in identifying and quantifying hydro-biogeochemical controls over groundwater arsenic dynamics using recent research cases,and pointed out several aspects that should be further undertaken and improved. |
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来源
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矿物岩石地球化学通报
,2022,41(1):81-91 【核心库】
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DOI
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10.19658/j.issn.1007-2802.2021.40.103
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关键词
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地下水
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砷
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铁矿物
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反应性溶质运移模型
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地址
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1.
中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550081
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中国科学院大学, 北京, 100049
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广东省科学院生态环境与土壤研究所, 广东省农业环境综合治理重点实验室, 广州, 510650
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-2802 |
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学科
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地质学 |
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基金
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国家重点研发计划课题
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文献收藏号
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CSCD:7151935
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