摘要
本文建立了一维河流石油类污染物"解吸为主"的动态水质模型。模型方程中考虑了河流悬移质、推移质泥沙和底泥与石油类之间发生的吸附\解吸的动态过程,以及河流弥散作用对石油类污染物在多沙河流中迁移的影响。模型还考虑了底泥解吸与泥沙解析在速率上的差别,使模型更加精确实用。运用拉普拉斯变换,求得了模型方程法的解析解。用室内烧杯试验的方法确定出了研究区域内的污染底泥解吸常数kdw;结合室内水槽动态试验,对解吸模型进行了验证。结果表明,该模型能够较好地描述一维多沙河流污染沉积物中石油类污染物的解吸过程。
The 1-D mathematical model describing the water quality of river polluted by oil characterized by desorption effect is established.In the model the dynamic process of adsorption/desorption interaction between sediment and oil as well as the dispersion effect of flow on oil pollution transport are taken into account.The Laplace transformation is adopted to deduce the analytical solution of the model.The desorption constant is determined by experiment and the validity of the model is verified by physical model test in flume.
出处
《水利学报》
EI
CSCD
北大核心
2004年第10期125-128,共4页
Journal of Hydraulic Engineering
基金
教育部高等学校优秀青年教师教学科研奖励计划资助
关键词
石油类污染物
多沙河流
迁移模型
解吸模型
oil pollution
silt-laden stream
interaction between sedimentation and oil
dispersion effect
desorption model
pollution transport
