Author(s)

Xiaoxu Du

Corresponding Author

Xiaoxu Du

ABSTRACT

Under the high development of urbanization in China, the management of water resources such as sewage purification and rainwater has become one of the important reasons to limit its development. Relying on its own concept of regulation and control focusing on the whole water ecosystem, Sponge City has no suspense as the most suitable guiding theory to solve the ecological and rainwater problems at present. In view of the difficulties in sewage purification and rainwater utilization, this paper analyzes the advantages and disadvantages brought by traditional "grey" infrastructure and "sponge city". From two aspects of survival, transformation and filtration, rainwater should be arranged as a whole and rationally planned to create a natural and ecological urban drainage system in which sponge city and traditional "grey" infrastructure are coordinated with each other. Through the analysis and summary of literature review, this paper obtains the difficulties encountered in popularizing "sponge city" in the current urban development process in China, and discusses how to balance sponge city with traditional "grey" infrastructure combined with critical thinking. What’s more, it expounds the complex diversity of rainwater and its interdependent and indispensable relationship with sponge cities and traditional "grey" infrastructure.

KEYWORDS

Component, Sponge city, "Grey" infrastructure, Water ecological infrastructure