随着城市化进展，污水处理厂的数量与规模在日益增多，有效收集其产生的臭气对防止臭气泄露、保护环境以及降低能耗有重要意义。采用数值模拟方法，研究污水处理厂臭气收集罩的结构参数（不同管束位置、不同管束数量、不同管径大小）及运行参数（抽吸流量）对于内部流场的影响规律。结果表明：当管束位置布置在集气罩最边处、抽气管数量为3根、管径为150 mm、抽气流量区间在3.63 ~ 5.71 kg/s时，腔体内气流组织分布最优，臭气的浓度最低，抽吸效果最佳。

With the development of urbanization, the number and scale of sewage treatment plants are increasing, and the effective collection of odor generated by them is of great significance to prevent odor leakage, protect the environment and reduce energy consumption. The influence of structural parameters (different tube bundle positions, different tube bundle numbers, different pipe diameters) and operating parameters (suction flow) on the internal flow field of the odor collection hood of a sewage treatment plant was studied by numerical simulation. The results show that when the tube bundle is placed at the very edge of the air collecting hood, the number of suction pipes is three, the diameter of pipe is 150 mm, and the suction flow range is 3.63 kg/s to 5.71 kg/s, the airflow structure in the cavity is the best, the odor concentration is the lowest, and the suction effect is the best.