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

场地土壤-地下水有机污染空间分布受场地温度场、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启示。

Research Progresses of Simulation and Migration Patterns on Organic Pollutants in Soil and Groundwater Driven by Thermal Coupling

The spatial distribution of organic contamination in soil-groundwater system is controlled by thermal field, hydrodynamic field, chemical field, and biological field. Understanding the migration and distribution patterns and influence mechanism of organic contaminants in soil-groundwater system is a prerequisite for effective mitigation and remediation. Temperature is an important influencing factor, affecting the migration and spatial distribution of organic pollutants in soil and groundwater by changing their physicochemical properties and key parameters controlling multiphase flow and chemical/biological perturbation. Through literature review, the analytical relationships between the physicochemical properties (density, viscosity, solubility) of organic pollutants and the key parameters of biological/chemical action (volatilization, adsorption and biodegradation) and temperature have been investigated. Then the research progress of simulation on organic pollutants in soil-groundwater driven by thermal coupling has been reviewed. Based on the deficiency of current research, we proposed the mathematical model coupling non-isothermal multiphase flow, solute transport and physiochemical driving processes to quantitatively simulate the migration and transformation patterns of organic contaminants under temperature-driven conditions. It provides inspiration for quantitatively exploring the migration and transport patterns and differences of organic pollutants driven by thermal coupling.