污水厂泵站前池流态分析与整流优化  

Flow State Analysis and Flow Rectifying Optimization of Pump-front Tank in Wastewater Treatment Plant

作　　者：林伟强[1,2] 张琪[1] 杨楠[1] 李国金[1] 

机构地区：[1]天津市市政工程设计研究院,天津市300051 [2]天津市基础设施耐久性企业重点实验室,天津市300051

出　　处：《城市道桥与防洪》2017年第5期144-146,共3页Urban Roads Bridges & Flood Control

摘　　要：为改善污水处理厂进水泵站前池中的不良流态,应用CFD软件,基于-标准模型和SIMPLEC算法对泵前池的初始设计方案和增设导流墙整流的改进设计方案进行模拟计算。结果表明,无整流措施时,前池中存在大量旋涡、回流区,各台泵进流不均匀;增设导流墙后,旋涡区域的范围及数量明显减少,进水流速分布更加均匀,前池内的流态得到有效改善;分别计算整流前后的参考断面的流速不均匀系数和各台泵进流流量的标准偏差,结果表明,设置导流墙有利于均化进流,提高水泵效率。In order to improve the bad flow state in the front tank of the influent pumping station of Wastewater Treatment Plant(WWTP), the software CFD is used to simulate and calculate the primary design scheme of pump-front tank and the improvement design scheme of adding the guide wall for rectifying the flow based on the-standard model and SIMPLEC algorithm. The result shows that a large number of eddy and reflow zone exist in the front tank, and the influent flow of each pump is uneven when the flow rectifying measures are not taken. The scope and number of eddy zone are obviously decreased, the influent velocity distribution is more uniformly and the state within the front tank is effectively improved after the guide wall is set up. The uniform velocity coefficient of the referred section and the standard deviation of a pump influent flow are separately calculated before and after rectifying flow. The result shows that the setup of guide wall is beneficial to optimize the influent flow and improve the efficiency of water pump.

关 键 词：泵前池 流态 水体旋涡 导流墙 

分 类 号：TU992.25[建筑科学—市政工程]