河流水污染模拟的多河段模型及其应用

The Multi-reach Model and Its Application in the River Contamination Simulation

给出了模拟河流分段的原则,根据连续性原理和Streeter—Phelps方程,建立了多河段BOD-DO数值离散方程,编制了求解离散方程和进行数据整理的计算机信息系统。运用多河段模型模拟河流的污染状况,不仅可以预测不同情况下河流水质的动态变化,而且可以运用模型预测治理后的水质变化情况,因此对河流污染的防治具有重要意义。

This paper puts forward the principle of dividing a river into reaches, sets up the numerical discretion equations about multi-reach BOD-DO, and compiles the computer information system solving the equations and treating the data. The model used for simulating the case of a contaminated river can be used to predict not only the water quality variation of a river in different conditions but also the water quality variation after the treatment by using the model, Therefore it has a great importance on preventing and treating the river pollution.