Sponge City Definition
Sponge City is a city that can be as resilient as a sponge in adapting to environmental changes and responding to natural disasters. When it rains, it absorbs water, stores water, seeps water, cleans water, and releases stored water and uses it when needed.
The construction of sponge cities refers to the combination of natural pathways and artificial measures in accordance with the principle of ecological priority, and under the premise of ensuring the safety of urban drainage and waterlogging, the accumulation, infiltration and purification of rainwater in urban areas will be achieved to the maximum extent. Promote the use of rain and fresh water resources and ecological and environmental protection.
Sponge urban planning involves social and economic systems, ecological systems, hydraulic layout and other water security, water resources, water environment and water ecology related aspects, is a complex system engineering.
Sponge City Project
The project mainly includes:
Build or transform the green roof, permeable pavement and natural ground in the building area;
The main purpose is to delay the current time of the runoff peak;
Protection, restoration and transformation of inland waters, lakes and wetlands in built-up urban areas and their utilization, and construction of rainwater harvesting and storage facilities according to local conditions;
Construction of sewage treatment facilities and pipe networks, comprehensive rehabilitation of river courses, construction of coastal ecological slopes and Gulf dredging;
Greening irrigation, road washing, car washing, cooling water, landscape water;
Village rain and pollution diversion pipe network renovation, low water drainage facilities renovation, etc..
