【摘要】 通过对有机污染物在地下水环境中迁移转化机理的研究 ,建立了地下水环境中有机污染物迁移转化的变系数动力学模型 ,并运用数学物理方法对该模型进行了解析求解 ,同时对动力学模型中的各物性参数进行灵敏度分析。结果表明 :地下水流速和弥散系数对于有机污染物的迁移转化的影响最大 ;当地下水流速比较大时 ,忽略衰变、吸附及生物降解作用的综合系数影响 ,不会造成太大误差。这对于定量化研究有机污染物在地下水环境中对流 扩散状况提供了可靠的理论依据 ,同时还为土壤污染预测预报、污染防治和水资源管理与评价提供科学依据和途径。更多还原

【Abstract】 Through the study on the mechanism of organic chemical transport in groundwater the dynamics model with varying coefficient for the organic chemical transport is developed.The analytical solution is obtained based on the mathematical and physical methods and the sensitivities for the parameters used in the model are analyzed.It is shown that the groundwater velocity and dispersion coefficient greatly affect the transport of organic chemicals.Under the condition of higher velocity of groundwater,it has little error to neglect the effects of disintegration,absorption and biodegradation,which provides the theoretical base for the study on convection\|diffusion status of organic chemical transport in groundwater.It can be used for the forecast of pollutants and the management and evaluation of groundwater resource.更多还原