City road rainwater recovery system and method thereof

Abstract

The invention discloses a city road rainwater recovery system and a method thereof. The recovery system comprises a soil-retaining frame, a bioretention zone, an ecological trench, a reservoir, a catchment main pipe, an adsorption pool, a water purification assembly, and an elevator pump, the water purification assembly is connected with the elevator pump, the catchment main pipe and the water purification assembly are communicated with the reservoir, an overflow well is arranged in the ecological trench, a filter sieve plate is arranged in the overflow well, sieve apertures are uniformly distributed on the filter sieve plate, and the bioretention zone is arranged in the soil-retaining frame. The method comprises the following steps: a) draining along a transverse direction; b) draining along a vertical direction; c) extraction and utilization; and d) regular maintenance. Through draining along the transverse direction and the vertical direction, the road draining speed is accelerated,the water amount accumulated on the road surface is reduced, appearance of a flood peak is avoided, waterlogging in the city can be effectively controlled, the rainwater can be filtered layer by layer and purified, and is stored in the reservoir, then the rainwater is lifted to ground through the elevator pump, secondary usage is carried out, and waste can be changed to valuables.

Description

technical field [0001] The invention belongs to the technical field of rainwater collection, and in particular relates to a rainwater recovery system and method for urban roads. Background technique [0002] Due to the traditional urban construction model, the roads are hardened everywhere, and the city becomes very "hard", unable to breathe, and heavy rains are prone to urban waterlogging. Urban drainage facilities are backward, and they mainly rely on "gray" facilities such as pipes, canals, and pumping stations to drain water. The investigation found that taking the main road of Zhuangyuan Road in the city center as an example, the road has many hazards and adverse effects due to imperfect drainage facilities. Specifically, there are : ①Water infiltrated into the subgrade structure through the surface of the road surface. Due to poor drainage, it stays in the subgrade for a long time, seriously affecting the strength of the subgrade, causing subgrade erosion, and in sever...

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Problems solved by technology

Urban drainage facilities are backward, and they mainly rely on "gray" facilities such as pipes, canals, and pumping stations to drain water. The investigation found that taking the main road of Zhuangyuan Road in the city center as an example, the road has many hazards and adverse effects due to imperfect drainage facilities. Specifically, there are : ①Water infiltrated into the subgrade structure through the surface of the road surface. Due to poor drainage, it stays in the subgrade for a long time, seriously affecting the strength of the subgrade, causing subgrade erosion, and in severe cases, it will form mud or fractures; Falling off from the aggregate surface causes various diseases; ③ Driving at night, due to the moisture on the urban road surface, the water surface on the road surface will reflect the light of the car lights, which will cause the driver's illusion, which will affect the safety of road driving ; ④The problem of surface water accumulation on urban roads may make traffic jams more serious; ⑤Rainwater is mainly drained through drainage facilities and cannot penetrate into the ground, which often results in waterlogging every rainy season, rapid turnaround of drought and flood, and insufficient rainwater resources. good collection and use

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