Underground urban sewage treatment plants emerge as the times require due to the advantages of saving land & having little impact on the environment. The Zhengzhou Flood on July 20 caused great human & economic losses, especially the loss of underground space & underground facilities. Through the analysis & interpretation of the waterlogging prevention & drainage facilities of Qianshan Water Purification Plant, an underground urban sewage treatment plant in Zhuhai, it expounds the key elements & main measures of waterlogging prevention of the underground urban sewage treatment plant for reference.

Underground urban sewage treatment plant, waterlogging prevention standard, site elevation, drainage pump pool, receiving water body, emergency plan.

[1] Technical guideline for underground municipal wastewater treatment plant: TCAEPI 23–2019[S]. Beijing: China Association of Environmental Protection Industry, 2019.

[2] Technical specification for urban underground wastewater treatment plant: T/CECS 729–2020[S]. Beijing: China Planning Press, 2020.

[3] YANG Feng. Comparison between underground sewage treatment plant and traditional aboveground sewage treatment plant[J]. Urbanism and Architecture, 2016(23):309–311.

[4] LIU Xu-wei, LI Tong, XU Jie, et al. Key point of domestic underground sewage treatment plant design[J]. Urban Environment & Urban Ecology, 2014(6), 35–38.