A new layered fan blade suspension carrier was prepared by 3D printing technology. Based on the multiphase flow coupled dynamic mesh model, the motion of the suspension carrier in the moving bed reactor was simulated by computational fluid dynamics software. Impact of the spatial structure of the suspended carrier on the detail flow field was analyzed. The results show that the layered fan blade carrier can play a good role in gas distribution, and at the same time, a large number of vortices of different sizes are generated in the reactor, which enhances the mass transfer and diffusion in the reactor. The reactor has good oxygenation effect, and the average gas holdup could reach 0.20126 after stabilization. The shape of the fan blade also enables the carrier to rotate under the action of mixed flow, and keep the flushing and pushing with the flow all the times, thus ensuring the activity of the biofilm, so the sewage treatment effect was enhanced under the same aeration rate. The average removal rate of COD in the carrier reactor was up to 87.75 %, and the maximum removal rate of NH₃-N was up to 94.77 %.

通过3D打印技术制备了新的分层风扇叶片悬架。基于多相流耦合动态网格模型，利用计算流体力学软件模拟了悬浮床在移动床反应器中的运动。分析了悬浮载体的空间结构对细节流场的影响。结果表明，分层风机叶片载体可以在气体分布中起到良好的作用，同时，在反应堆中会产生大量不同大小的旋涡，从而增强了反应堆的传质和扩散。该反应器充氧效果好，稳定后平均持气量可达0.20126。风扇叶片的形状还使托架在混合流的作用下旋转，并始终保持顺水冲洗和推动，从而确保生物膜的活性，因此在相同曝气速率下污水处理效果得到提高。载体反应器中COD的平均去除率高达87.75％，NH的最大去除率₃ -N高达94.77％。