地铁北广贤初雨调蓄池设计

Design of Initial Rainwater Storage Tank on Guangxian Road for Subway North Square

摘要:

在排水系统末端建设初雨调蓄池是控制面源污染的有效途径之一。地铁北广贤初雨调蓄池服务于2个排水系统，通过对常用的重力流进水模式和水泵提升式进水模式的技术经济比较分析，最终确定采用现状雨水提升泵提升进水的方案，大大节约了工程建设投资。介绍其进水模式比选、运行联动设计、冲洗系统、排空系统和除臭工艺的设计，并针对其服务两个排水系统的特点，优化了进水和排空设计，可为类似项目的设计和运行管理提供借鉴。

Abstract:

The construction of initial rainwater storage tank at the end of drainage systems is one of the effective ways to control the non-point source pollution. Taking the design of an initial rainwater storage on Guangxian Road for the north square of the subway as an example, this storage tank serves two drainage systems. Through the technical and economic comparison between the commonly used gravity inflow mode and pump lifting inflow mode, the scheme of using the current rainwater lifting pump for inflow is finally determined, which greatly saves the engineering construction investment. The comparison and selection of its inflow mode, the design of operational linkage, and the design of washing system, emptying system and deodorization process are introduced. And aiming at the characteristics of its service for two drainage systems, the inflow and emptying designs are optimized accordingly, which can provide reference for the design and operational management of similar projects.