天津市中心城区二级河道水循环系统能力提升工程设计

Design of Capacity Improvement Project of Secondary River Channel Water-Cycling System in Tianjin Downtown

为提高河道纳污能力,使水生态环境面貌有所好转,提升河道的水循环能力非常重要。通过对天津市中心城区各循环河道调蓄容量的统计,并对中心城区南、北部水循环系统中的现状设施情况逐一梳理,计算出中心城区南、北部水循环系统现状换水周期,选择在适当的位置加设循环泵站。在施工工期紧张和不影响河道行洪的前提下,还选择出更适宜工程的泵站类型。

It is very important to improve the water-cycling capacity of the river in order to improve the capacity of receiving pollutants and the water ecological environment.Based on the statistics of the storage capacity of each circulating river channel in Tianjin downtown,and the current facilities of the water-cycling system in the south&the north area of the downtown are researched;the current changing water period of the watercycling system in the south&the north area of the downtown is calculated,and the circulating pump station is selected at the appropriate location.On the premise of short construction period and no impact on river flood discharge,a more suitable pump station type is also selected.