Abstract
Rainwater utilization is a technical means of comprehensive utilization of rainwater. These include environmentally and economically friendly methods of irrigating farmland and storing water for flushing. The construction of “sponge city” is also the key point that the society pays close attention to nowadays. Rainwater utilization and “sponge city” are to solve the problem of urban waterlogging from the concept to the purpose of construction. Based on certain data, this paper analyzes and expounds the current situation of rainwater utilization at home and abroad, the progress of “sponge city” construction and the desirable experience of advanced countries, summarizes its development trend through case analysis, and puts forward the prospect of future rainwater utilization and “sponge city” construction and development.
Highlights
Through comprehensive consideration and combine the characteristics of the rainwater, economic benefit, environment friendly requirements, to achieve the rain back to used in industry, agriculture, make water back to collectivization in urban ecological residential area, reduce the urban rain flood, storm runoff pollution control, improve the urban ecological environment such as the purpose, set up systems for replenishing groudwater with rainwater, roof garden systems, ecological community rainwater utilization systems, rainwater infiltration system, community buildings for water reuse systems, and under the premise of relevant laws and regulations, use rainwater for the lavatory, irrigation of farmland and road cleanliness such as miscellaneous water
As one of the important links, the construction of "sponge city" plays a positive role in promoting the circulation of rainwater utilization through the constant renewal and improvement of the construction concept, which is conducive to improving the utilization rate of water resources and better realizing the development of urban rainwater utilization
Rainwater can be comprehensively utilized in a series of ways to improve water environment and promote water circulation (Figure 1)
Summary
Through comprehensive consideration and combine the characteristics of the rainwater, economic benefit, environment friendly requirements, to achieve the rain back to used in industry, agriculture, make water back to collectivization in urban ecological residential area, reduce the urban rain flood, storm runoff pollution control, improve the urban ecological environment such as the purpose, set up systems for replenishing groudwater with rainwater, roof garden systems, ecological community rainwater utilization systems, rainwater infiltration system, community buildings for water reuse systems, and under the premise of relevant laws and regulations, use rainwater for the lavatory, irrigation of farmland and road cleanliness such as miscellaneous water. Utilization is to enable rainwater to be fully absorbed by soil and replenish groundwater during rainfall. Rainwater can be comprehensively utilized in a series of ways to improve water environment and promote water circulation (Figure 1)
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