Rainwater garden capable of efficiently reducing runoff flow rate and pollutants

A technology for rain gardens and pollutants, applied in general water supply conservation, horticulture, waterway systems, etc., can solve the problems of low penetration efficiency, easy clogging of substrates, low removal rates of nitrogen, phosphorus and metal ions, etc., to expand plant selection. range, mitigation of runoff scour, and the effect of reducing runoff pollutants

Active Publication Date: 2019-07-16
XUZHOU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims at the defects of low purification ability, low water storage capacity, easy clogging of matrix, poor practical effect of landscape, low removal rate of nitrogen, phosphorus and metal ions, high requirements for planted plants, and low penetration efficiency of existing gardens.

Method used

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  • Rainwater garden capable of efficiently reducing runoff flow rate and pollutants
  • Rainwater garden capable of efficiently reducing runoff flow rate and pollutants
  • Rainwater garden capable of efficiently reducing runoff flow rate and pollutants

Examples

Experimental program
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Effect test

Embodiment 1

[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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PUM

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Abstract

The invention relates to a rainwater garden capable of efficiently reducing runoff flow rate and pollutants. The rainwater garden of an annular structure sequentially comprises a preprocessing unit, agarden unit and a reservoir from outside to inside and is characterized in that the preprocessing unit is used for filtering and preventing rain wash, and the garden unit is used for planting terrestrial plants; a pavilion can be also built above the reservoir to enhance the practicality of the rainwater garden. The rainwater garden has the advantages that runoff pollutants can be efficiently reduced, runoff souring force can be relieved effectively, water storage and purification ability and permeation efficiency can be increased, the requirements on planted plants are lowered, plant selection range is expanded, and the retention time of the runoff in a vegetation layer is prolonged.

Description

technical field [0001] The invention belongs to the technical field of sponge city application, and in particular relates to a rain garden for efficiently reducing runoff velocity and pollutants. Background technique [0002] With the continuous advancement of urbanization in our country, the proportion of urban impervious areas has increased rapidly. When the rainy season comes, urban waterlogging will occur, which will bring a lot of inconvenience to citizens and seriously cause loss of life and property. At the same time, the rainwater runoff formed by rainfall will carry A large number of pollutants (such as particulate matter, nitrogen, phosphorus, metal ions, etc.) directly enter surface rivers without treatment, thereby destroying the urban water environment. In response to the above problems, a new concept of sponge city is proposed. Sponge city refers to the city's good "elasticity" in adapting to environmental changes and dealing with natural disasters caused by ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G22/00E03B3/02E03F5/10
CPCA01G17/005A01G22/00E03B3/02E03F5/10Y02A20/108
Inventor 范秀磊徐志鹏陈佳贞杨成方刘加强
Owner XUZHOU UNIV OF TECH
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