Design and Optimization of Combined Initial Rainwater Storage Tank in Separate Drainage System

rainwater runoff discharging into the lake in the separate drainage system has caused more and more serious damage to the ecological environment of water body, the construction of storage tank to intercept the initial rainwater with heavy pollution has been paid more and more attention and applied. Combined with an example of the design of an initial rainwater storage tank in Wuhan, the effective volume calculation method of the storage tank and the arrangement form of the combined initial rainwater storage tank in the separate system was introduced. Furthermore, the energy ª²saving effect and operating convenience got improved by the optimization of design of flushing system, patrol channel and light well, which could provide reference for application of initial rainwater storage tank in separate drainage system£®