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Functional rainwater garden applicable to sponge community

A rain garden and functional technology, applied in the direction of runoff/rainwater treatment, sewage discharge, water supply equipment, etc., can solve problems such as complex composition, groundwater pollution, and limited soil removal capacity for pollutants

Pending Publication Date: 2017-05-24
HUATIAN ENG & TECH CORP MCC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many pollutants in rainwater, the composition is complex, and the soil’s ability to remove pollutants is limited. As a result, conventional rain gardens have low adsorption capacity for some high-concentration heavy metals or organic matter, so that the water body containing pollutants can penetrate the soil filter layer and sand layer. Into the groundwater, causing groundwater pollution
[0005] The existing rain garden design mainly considers the effect of water storage and peak stagnation, and weakens the purification effect. The ability to remove heavy metals, organic matter and other pollutants in the initial rainwater is limited, and no effective strengthening treatment measures have been taken. High, the problem of re-pollution of clean water

Method used

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  • Functional rainwater garden applicable to sponge community
  • Functional rainwater garden applicable to sponge community

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, a functional rain garden suitable for a sponge community includes a pre-filtration layer 2, an aquifer 3 and an overflow facility 4.

[0031] Among them, the pre-filtration layer 2 includes a side slope and a zeolite-activated carbon filter system and grass planting covered on the side slope. The side slope is located at the junction of the garden and the green space around the garden. The angle between the side slope 2 and the horizontal direction is about 30° , The zeolite-activated carbon filter system is composed of 40% gravel, 30% activated carbon and 30% zeolite by volume. The thickness of the zeolite-activated carbon filter system is 8-10cm. The particle size range of gravel, activated carbon and zeolite 3-8cm, and the grasses are perennial herb tall fescue, ryegrass and the like.

[0032] The aquifer 3 is a space formed by th...

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Abstract

The invention discloses a functional rainwater garden applicable to a sponge community. The functional rainwater garden comprises a pre-percolation layer, a water storage layer and an overflowing facility, wherein the pre-percolation layer comprises an annular edge slope arranged at the periphery of the garden; a zeolite-active carbon filtering system is laid on the annular edge slope; a part, far away from the garden, of the annular edge slope is higher than a part close to the garden; the water storage layer comprises a covering layer, a planting soil layer, a percolation layer and a filling layer which are arranged in sequence from top to bottom; an overflowing pipe of the overflowing facility penetrates into the water storage layer along the vertical direction; an overflowing hole of the overflowing facility is higher than the water storage layer. According to the functional rainwater garden, a multi-grade percolation system composed of the pre-percolation layer, an active carbon layer and the water storage layer has the effects of filtering, precipitating, permeating and adsorbing rainfall runoff, carrying out ion exchange, biodegradation and plant absorption and the like, and pollutants including heavy metal, organic matters, nitrogen and phosphorus and the like in the runoff are reduced, so that absorption and purification of the runoff are realized; water for greenbelts is reduced, and urban waterlogging and municipal drainage pressure are alleviated; a heat island effect is alleviated and an ecological city is constructed.

Description

technical field [0001] The invention relates to a functional rainwater garden suitable for sponge communities, and belongs to the technical field of rainwater runoff pollution control. Background technique [0002] With the continuous acceleration of urbanization, the problems of urban waterlogging, initial rainwater pollution and black and smelly rivers are becoming more and more serious. The water system in the city continues to decrease, and the impermeable area of ​​the underlying surface increases, resulting in the inability of rainfall runoff to infiltrate through the ground, resulting in serious waterlogging within the city after the formation of stagnant water. At the same time, rainwater runoff scours the road surface and carries pollutants such as high concentrations of heavy metals, hydrocarbon organic matter, nitrogen and phosphorus, and will also cause initial rainwater pollution. Existing studies have shown that the discharge of various pollutants has caused g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14E03F1/00C02F101/20C02F101/30
CPCE03F1/00C02F9/00C02F3/32C02F3/1268C02F1/42C02F1/281C02F1/283C02F1/001C02F2103/001C02F2101/20C02F2101/30Y02A30/60
Inventor 郑菲詹茂华程寒飞朱红生李育松杨帆吴述园
Owner HUATIAN ENG & TECH CORP MCC
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