A rainwater recycling system for sponge cities

Abstract

The invention provides a rainwater recycling system for a sponge city, comprising a drainage pipe, a first filter, a second filter, a purifier, a water storage tank and a sprinkler device, the outlet of the drainage pipe communicates with the upper part of the first filter, and filters The barrel and the impeller are arranged inside the first filter, connected with the motor provided outside, and rotated under the drive of the motor, the lower part of the first filter communicates with the upper part of the second filter, the second filter includes at least one filter layer, and the filter layer is opposite It is installed obliquely on the horizontal plane, the lower part of the second filter communicates with the upper part of the purifier, the purifier communicates with the upper part of the water storage tank through the water pump, and the lower part of the water storage tank communicates with the nozzle device through the water pump, and the nozzle device of the nozzle device is provided with an upper nozzle pipe and The lower nozzle can be exposed or hidden respectively. This invention can solve the problem of short-term water accumulation caused by roof rainwater falling on the hardened road surface during rainfall, and meet the needs of urban green space replenishment and moisturizing. It is easy to operate, easy to install and disassemble, and prolongs the service life of the system.

Description

technical field [0001] The invention relates to the field of sponge city construction, in particular to a system for recycling rainwater in a sponge city. Background technique [0002] In recent years, sponge city has gradually developed as a new concept of urban stormwater management. Sponge city refers to the city's good flexibility in adapting to environmental changes and responding to natural disasters. It can effectively improve the standard of urban drainage system, reduce the pressure of urban waterlogging, and collect rainwater for recycling, which can reduce the pressure of urban drainage and save water resources. [0003] Buildings in the city are built with rainwater pipes connected from the roof to the ground. The rainwater flows through the ground and collects into the rainwater well. After passing through the pipeline, it leads directly to the underground waterway, and then collects it for treatment or discharge. Generally, the urban ground is hardened ground s...

AI Technical Summary

Problems solved by technology

[0003] Buildings in the city are built with rainwater pipes connected from the roof to the ground. The rainwater flows through the ground and collects into the rainwater well. After passing through the pipeline, it leads directly to the underground waterway, and then collects it for treatment or discharge. Generally, the urban ground is hardened ground such as cement, which cannot Water seepage, when the rain is heavy, there will be a lot of water on the ground, which is not conducive to the passage of pedestrians. The green space in the city cannot absorb a large amount of rainfall in a short time, and it will also cause a lot of water accumulation. A large amount of precipitation cannot be discharged and can only be evaporated naturally , instead of rainy days, the green space in the city is dry and lacks water, and it is necessary to connect the municipal pipe network to irrigate the green space, so that the rainwater cannot be used rationally, resulting in a lot of waste of water resources, and in order to save water or cost, there will be problems of untimely watering , long-term exposure of nozzles is easy to block, which will have a negative impact on urban greening

[0004] The sedimentation tanks or adsorption tanks used in the existing rainwater treatment are filtered and the adsorbed substances are tiled. The area is large, and the replacement cycle is long, and the operation is complicated. If it is not used for a long time, the effect of rainwater treatment will be reduced, and the rainwater treatment and recycling will be affected. service life of the equipment

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