Rainwater garden circulating system

Abstract

The invention discloses a rainwater garden circulating system. The rainwater garden circulating system comprises a purified water storage chamber, a rainwater garden system and a central water pool system, wherein rainwater sequentially passes through aquatic plants and a planting soil layer to primarily filter large-particle impurities in the rainwater, then the rainwater flows into a gravel drainage layer for further secondary filtration, flows into a purification filter layer for deeply and automatically adsorbing and purifying the rainwater, and flows into a purified water storage chamber through solid waste permeable concrete, meanwhile, the rainwater is subjected to primary filtration through surface plants and solid waste water permeable bricks, then is subjected to secondary adsorption purification through a nutrient soil layer and a purification filter layer, and flows into the purified water storage chamber through a solid waste concrete layer, a water collecting device is arranged in the purified water storage chamber and is connected to a plant irrigation spray head to guide water to plants on the earth surface. According to the rainwater garden circulating system, garbage sundries, organic pollutants and heavy metals in rainwater runoff can be effectively adsorbed and filtered, and a better effect on pollution reduction and rainwater runoff control of a sponge city is achieved.

Description

technical field [0001] The invention relates to a rainwater circulation system, in particular to a rainwater garden circulation system. Background technique [0002] Sponge city is a new generation of urban stormwater management concept. It means that the city can be like a sponge, and has good elasticity in adapting to environmental changes and dealing with natural disasters caused by rainwater. It can also be called "water elastic city". Among them, the rain garden is the most typical product of the sponge city. The rain garden is a naturally formed or artificially excavated shallow concave green space, which is used to gather and absorb rainwater from the roof or the ground. It is an ecologically sustainable rainwater control and rainwater utilization facility that is purified and gradually infiltrated into the soil to conserve groundwater or replenish urban water such as landscape water and toilet water. Like a sponge, a sponge city has good adjustment capabilities in c...

AI Technical Summary

Problems solved by technology

[0004] At present, the construction of sponge city is facing many problems. For example, the overall coordination is not enough. The construction of sponge city is not a small-scale construction. The sites involved include residential areas, roads, landscaping and water systems.

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