Filter tower is usually used in industrial wastewater. However, filtration efficiency will be decreased because of the bias flow in filter tower. This paper is to propose a design method of uniform flow field in porous media filter tower. Firstly, based on the RNG k-ε turbulence model, porous media filter tower model is built and the computational fluid dynamics (CFD) is employed to simulate the flow field. The simulation results show that the throttle plate can make the flow field of the filter tower uniform. Secondly, in order to further study the flow field in filter tower, the optimal parameter combination of filter tower is obtained by monofactor analysis and orthogonal analysis. Finally, the optimal design parameters are verified by experiments. The simulation and experimental results show that the uniform flow field design method used in porous media filter tower is feasible.

滤塔通常用于工业废水中。但是，由于过滤塔中的偏流，过滤效率将降低。本文提出了一种多孔介质过滤塔内均匀流场的设计方法。首先，基于RNGk-ε湍流模型，建立了多孔介质过滤塔模型，并利用计算流体力学（CFD）来模拟流场。仿真结果表明，节流板可以使滤塔的流场均匀。其次，为进一步研究滤塔中的流场，通过单因素分析和正交分析获得了滤塔的最佳参数组合。最后，通过实验验证了最佳设计参数。