The utilization of rainwater collection system promotes the modernization of Chinese cities

The reuse of rainwater is an important part of water saving, and the recycling and utilization of rainwater is bound to become the development trend of urban conservation, which plays a positive role in promoting the development of urban modernization. Of course, rainwater reuse as a huge and long-term system project, it not only needs the joint research of various scientific teams, but also needs the strong support of local government departments and residents. The state also actively advocates the construction of "sponge city", so that the city can store rainwater, alleviate and solve the urban water shortage situation, and develop rainwater collection system is a project that benefits the country and the people.

The abandonment device plays an important role in the whole rainwater collection system, and the choice of the abandonment mode has an impact on the size of the initial rainwater abandonment flow, the control mode of the abandonment equipment, the construction and maintenance and the project cost. The abandonment device is generally set at the end of the rainwater collection system, but this leads to the initial rain water at the beginning of the abandonment network, and some of the clear rain water near the end has to be abandoned at the same time. In order to reduce water waste, it is necessary to set the abandonment device in the more central part of the whole network, and it is also required to achieve balanced layout as much as possible during the layout, avoiding the narrow and long dendritic layout.

However, the reuse of rainwater started late in China until the 1990s, and the reuse of rainwater was studied as a separate subject in our country. However, rainwater recycling has been rapidly developed in some areas and has produced considerable economic and ecological benefits. In recent years, related rainwater recycling seminars have been held in various cities in China. With the increasingly frequent international exchanges, China continues to learn technology from Western advanced countries, and according to the actual situation of different regions to establish a demonstration project in accordance with different regions.

Water is a life resource, the development of the city can not be separated from sufficient water resources, but at present, most of our cities on the one hand, urban hunger and thirst, on the other hand, the annual rainy season "city to see the sea", "water flooding Jinshan" phenomenon frequently, resulting in the loss of precious rainwater resources. How to make the city like a sponge, suck up when the rain is sufficient, release when the water is scarce, the development of rainwater collection and recycling system is crucial, and become a microcosm to promote our urban modernization.

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