Spiral type low elevation greenbelt capable of efficiently reducing runoff pollutants

A spiral, pollutant technology, applied in the direction of water pollutants, runoff/rainwater treatment, sewage discharge, etc., can solve the problems of imperfect water volume regulation, insufficient pollution filtration and absorption, incomplete absorption of pollution elements, etc., to achieve pollution absorption Various types, prolonging the hydraulic retention time, and improving the effect of cutting rate

Active Publication Date: 2017-02-08
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the prior art of incomplete absorption of polluting elements, incomplete regulation of water volume, and in

Method used

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  • Spiral type low elevation greenbelt capable of efficiently reducing runoff pollutants
  • Spiral type low elevation greenbelt capable of efficiently reducing runoff pollutants
  • Spiral type low elevation greenbelt capable of efficiently reducing runoff pollutants

Examples

Experimental program
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Effect test

Example Embodiment

[0037] Example 1

[0038] Although there are more and more researches on recessed green spaces, the existing various types of recessed green spaces can meet the treatment of rainfall runoff pollutants to some extent, but there are still obvious defects and deficiencies, (1) ) The current recessed green space does not specifically select certain aquatic plants that have a great effect on water purification in the selection of plants, which is not conducive to the absorption and utilization of certain pollutant elements by vegetation. (2) The current hydraulic retention time of the recessed green space is short, which is not conducive to the full absorption and filtration of pollutants by plants and soil fillers; at the same time, the shorter hydraulic retention time is also not conducive to the rainwater accumulation and collection of the recessed green space. Regulation of downstream flood peak flow.

[0039] The invention provides a spiral recessed green space for efficiently red...

Example Embodiment

[0046] Example 2

[0047] Such as Figure 1-4 As shown, a spiral recessed green space that efficiently reduces runoff pollutants includes a spiral recessed green space 1 and a water retaining filter wall 2. The water retaining filter wall 2 is in the shape of an inverted truncated cone, and the spiral recessed green space 1 Including spiral plant belt 3 and bottom plant belt 4. The design elevation of the spiral recessed green space 1 is 250mm lower than the surrounding road surface. The spiral plant belt 3 and the plant belt 4 at the bottom of the recessed green space are planted with aquatic plants. The selected aquatic plants have strong nitrogen and phosphorus absorption capacity and water quality purification. Highly capable aquatic canna and iris.

[0048] The vertical slope of each half circle of the spiral plant belt 3 is designed to be 8°~10°. Here, the vertical slope of each half circle of the spiral vegetation belt 3 is designed to be 8°. Due to gravity, when the upst...

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Abstract

The invention discloses a spiral type low elevation greenbelt capable of efficiently reducing runoff pollutants,belonging to the field of rainwater pollution control. The spiral type low elevation greenbelt capable of efficiently reducing runoff pollutants mainly comprises the spiral type low elevation greenbelt and a reverse cone-shaped water retaining filtering wall, wherein the spiral type low elevation greenbelt is composed of a spiral type plant zone and a low elevation greenbelt bottom plant zone; the water retaining filtering wall is composed of 2-3 layers of stone grains made from different materials from outside to inside. The reverse cone-shaped water retaining filtering wall in the spiral type low elevation greenbelt can preliminarily intercept and filter the runoff pollutants seeped from the periphery; in combination of the design for the shape and slope of the spiral type plant zone, under the effect of gravity, the rainwater and the upstream direct surface runoff water entering the low elevation greenbelt all spirally flow and infiltrate, so that the seepage time and the seepage path of the incoming water can be greatly prolonged and the capability of the low elevation greenbelt to reduce the upstream runoff pollutants can be promoted. According to the spiral type low elevation greenbelt, the hydraulic load caused by initial rainwater runoff pollution can be effectively relieved, the downstream water-draining pressure can be reduced, and the spiral type low elevation greenbelt has obvious social, environmental and economic benefits.

Description

technical field [0001] The invention relates to the field of rainwater pollution control, in particular to a spiral sunken green space for efficiently reducing runoff pollutants. Background technique [0002] Rainfall runoff pollution is currently the most important non-point source pollution. The randomness of its pollution and the uncertainty of pollutant discharge have attracted more and more attention from governments around the world. Environmentalists around the world have invested a lot of manpower and material resources to deal with Runoff pollution has been studied in various ways. According to different sources of pollutants, rainfall runoff pollution can be divided into urban runoff pollution, agricultural production pollution, rural livestock manure pollution, surface runoff pollution in forest areas, surface runoff pollution in mining areas and construction sites, and other pollution. [0003] With the significant acceleration of my country's urbanization proce...

Claims

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Application Information

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IPC IPC(8): E03F1/00C02F9/14C02F101/16
CPCC02F1/001C02F3/32C02F2101/105C02F2101/16C02F2103/001E03F1/00
Inventor 张毅敏彭福全曾婧高月香巫丹徐斌
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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