中文摘要：

建立一个生物滤池的多组分、多物种综合动态模型，该模型能动态描述进水及反冲洗过程对生物滤池状态和处理效果的影响，模型主体由4个子模型组成，即组分的反应动力学模型、传质扩散模型、滤池过滤模型和反冲洗模型，将4个子模型合理耦合，即可对生物滤池净化过程进行数学模拟。

英文摘要：

A comprehensive multi-components and multi-species dynamic model of biofiher was established in this paper. This model can describe the effect of backwash and time-varying influent conditions on biofilters. The model includes the following sub-models： kinetics model of reactions, mass transfer and diffusion model, filtration process model, and backwash model. Through the coupling of these four sub-models, biofilter purification process can be simulated dynamically.