Device and method for quality-based rainwater collection, treatment and utilization

Abstract

The invention discloses a device and a method for quality-based rainwater collection, treatment and utilization. The device comprises an early-stage rainwater pond (1), an early-stage rainwater treatment plant bed (2), a middle-later-stage rainwater enhanced treatment bed (3) and a clean water pond (4) which are arranged under the ground, wherein the upper part of the early-stage rainwater pond (1) is communicated with the middle-later-stage rainwater enhanced treatment bed (3), the lower part of the early-stage rainwater pond (1) is communicated with the early-stage rainwater treatment plantbed (2) and the middle-later-stage rainwater enhanced treatment bed (3) is communicated with the clean water pond (4). The separation of seriously polluted early-stage rainwater and middle-later-stage clean rainwater is realized. By confining the early-stage polluted rainwater in the early-stage rainwater pond, the middle-later-stage clean rainwater is prevented from being polluted. On the basis of further enhanced treatment of the middle-later-stage clean rainwater, the rainwater is collected and stored and is used for greenery irrigation, road sweeping and the like. The resource utilizationof the rainwater is realized and the water resource is saved.

Description

technical field [0001] The invention belongs to the technical field of rainwater recovery and utilization, and in particular relates to a device and method for collecting, treating and utilizing rainwater quality. Background technique [0002] With the development of my country's social economy and the acceleration of urbanization, municipal water consumption such as green land and road sprinkling continues to increase, but these municipal industries do not have high requirements for water quality, and currently in many areas these departments mainly use tap water. This has led to the emergence of municipal water and people competing for water. Therefore, it is very meaningful to find new alternative water sources for municipal water use. [0003] Rainwater is a very ideal alternative water source, but the awareness of resource utilization of rainwater is not enough in our country at present, and many cities lack reasonable and effective rainwater collection and utilization ...

AI Technical Summary

Problems solved by technology

[0005] Existing studies have shown that for a rainfall, the first few millimeters of rainwater runoff are most polluted, and almost all the pollutants carried in the runoff are concentrated, which may contain organic matter, nitrogen and phosphorus, pathogens, heavy metals, oil, etc. Pollutants such as suspended solids, if discharged directly, will cause pollution of the receiving water body. If they are mixed with rainwater in the middle and late stages, it will affect the overall water quality. Therefore, it is very necessary to collect, treat and utilize rainwater by quality

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