温度耦合驱动下土壤-地下水有机污染物迁移规律与模拟研究进展
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P641

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国家重点研发计划项目(2019YFC1804304)


Research Progresses of Simulation and Migration Patterns on Organic Pollutants in Soil and Groundwater Driven by Thermal Coupling
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the National Key Research and Development Program of China (No. 2019YFC1804304)

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    摘要:

    场地土壤–地下水有机污染空间分布受温度场、水动力场、化学场和生物场等多场控制。明晰有机污染物在土壤–地下水系统中的空间分布规律和驱动机制,定量模拟污染迁移过程,是有效开展污染控制与修复的前提。在众多的影响因素中,温度通过改变有机污染物的理化性质及多相流、化学/生物作用驱动参数,进而影响其在土水介质中的迁移及空间分布。本文综述了有机污染物理化性质(密度、黏度、溶解度)和有机污染化学/生物驱动(挥发、吸附和生物降解)关键参数与温度之间的解析关系,及考虑温度影响的土壤–地下水中有机污染传质过程模拟的研究进展,并针对目前模拟研究的不足提出了耦合温度场的土壤–地下水有机污染物迁移数学模型,为定量探究温度耦合驱动下的有机污染物迁移转化过程和规律提供参考。

    Abstract:

    The spatial distribution of organic contamination in soil-groundwater system is controlled by thermal, hydrodynamic, chemical and microbial fields. Understanding the migration and distribution patterns and influence mechanism of organic contaminants in soil-groundwater system is a prerequisite for effective remediation. Temperature is an important factor affecting the migration and spatial distribution of organic contaminants in soil and groundwater by changing their physicochemical properties and key parameters controlling multiphase flow and chemical/microbial perturbation. In this paper, the relationships between the physicochemical properties (density, viscosity, solubility) of organic contaminants and the key parameters of microbial/chemical actions (volatilization, adsorption and biodegradation) and temperature are analyzed, and the studies of simulation on organic contaminants in soil-groundwater driven by thermal coupling are reviewed. Finally, the mathematical model coupling non-isothermal multiphase flow, solute transport and physiochemical driving processes is proposed to quantitatively simulate the migration and transformation patterns of organic contaminants under temperature-driven conditions. It can provide references for quantitatively exploring the migration and transport patterns of organic contaminants driven by thermal field coupling.

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杨蕴,崔孜铭,熊贵耀,王锦国,吴吉春.温度耦合驱动下土壤-地下水有机污染物迁移规律与模拟研究进展[J].土壤,2023,55(3):464-473. YANG Yun, CUI Ziming, XIONG Guiyao, WANG Jinguo, WU Jichun. Research Progresses of Simulation and Migration Patterns on Organic Pollutants in Soil and Groundwater Driven by Thermal Coupling[J]. Soils,2023,55(3):464-473

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  • 收稿日期:2022-06-09
  • 最后修改日期:2022-08-05
  • 录用日期:2022-08-22
  • 在线发布日期: 2023-06-25
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