In hydraulic design of settling tank, care should be taken to ensure the smaller recirculation regions and ensure steadier flow velocity on vertical section of settling tank.

• 在沉淀池水力设计中应通过对池型以及各种几何参数的优化，使沉淀池内回流区范围尽可能减小，尽量使池内垂直断面上流速均匀平稳。