Sponge city has outstanding advantages, rainwater utilization rate increased three times.
The sponge city has five main benefits. Preventing waterlogging through a low-impact development model can effectively reduce the total amount of rainwater entering the drainage network and the amount of rainwater runoff per unit time.
1. Reduce the pressure of the drainage pipe network and reduce the huge investment in the expansion of the drainage pipe network.
2. It can increase the amount of rain and water seepage, reduce the amount of urban ground subsidence, alleviate the phenomenon of ground collapse, strengthen the circulation of the urban natural water system, and solve the problem of urban water shortage.
3. The sponge city relies on the sponge to adjust the water supply and drainage, which greatly reduces the amount of construction of the newly constructed drainage pipeline and reinforced concrete pool.
4. The storage facilities are often combined with the existing urban green space, gardens, and landscape water bodies, and the "net cost increase" is relatively low.
5. Can greatly reduce the cost of water environment pollution treatment and reduce the huge losses caused by urban waterlogging.