A rain garden that efficiently reduces runoff velocity and pollutants
A technology for rain gardens and pollutants, which is applied in general water supply conservation, horticulture, waterway systems, etc., can solve the problems of poor landscape utility, low penetration efficiency, and low nitrogen, phosphorus and metal ion removal rates.
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[0033] refer to figure 1 or figure 2 , a rain garden that efficiently reduces runoff velocity and pollutants, characterized by:
[0034] The rain garden, which is in the form of a ring structure, consists of a pre-treatment unit 6 for filtering and preventing rainwater from scouring, a garden unit 9 for planting terrestrial plants, and a reservoir 19 from outside to inside.
[0035] Specifically, a pavement 1 can be laid on the outside of the rain garden, and the rainwater flows from the pavement 1 into the pre-treatment unit 6 and enters the garden unit 9 after being filtered and preliminarily purified, and further infiltrates or flows into the reservoir 19 .
[0036] refer to image 3 , the pre-processing unit 6 includes a treatment block device housing 21, a gravel layer 5 placed at the bottom of the treatment block device housing 21, a packing layer II24 on the top of the gravel layer 5, and a cobblestone layer placed on the top of the packing layer II24 2. The gravel ...
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