河流重金属随水-悬浮物-底泥迁移转化模型  

The Transferring and Transforming Model of Heavy Metals with Water-suspended Substance-mud in Rivers

作　　者：黄本生[1] 李西萍[2] 范舟[1] 王小红[1] 

机构地区：[1]西南石油大学材料科学与工程学院 [2]西南石油大学图书馆,成都610500

出　　处：《中国安全科学学报》2008年第12期23-28,共6页China Safety Science Journal

摘　　要：详细分析重金属在河流中迁移转化过程,并根据质量守恒定律,建立河流重金属随水-悬浮物-底泥迁移转化耦合模型。分析表明:重金属在河流中迁移转化过程包括对流传质、分子扩散传质、吸附和解析传质、沉降和再悬浮传质;根据重金属传质过程及其在体积单元中的质量变化率,考虑河流的状态,建立了河流重金属随水-悬浮物-底泥迁移转化耦合稳态模型和紊动模型,在一定的边界条件和起始条件下,可实现模型的简化求解。The transferring and transforming process of heavy metals in rivers is detailed. The coupling model of heavy metals transferring and transforming with water-suspended substance-mud is established according to mass conservation law. Analysis shows that the transferring and transforming process of heavy metals in rivers includes convection, molecule diffusing, adsorption and desorption, sedimentation and resuspendingl According to the mass transfer process of heavy metals, the ratio of mass change and the state of river flow, the stable coupling model and the turbulent coupling model of heavy metals transferring and transforming with water-suspended substance-mud are built, whi＇ch be simplified and solved under certain boundary conditions and initial conditions.

关 键 词：重金属 迁移转化 吸附 解析 耦合模型 

分 类 号：X522[环境科学与工程—环境工程]