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Road pavement runoff sewage intercepting wetland zone and construction method thereof

A technology of road pavement and construction method, which is applied in the field of environmental engineering to achieve the effect of slowing down the flow rate of runoff and reducing surface runoff pollution

Inactive Publication Date: 2015-10-21
TONGJI UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a road surface runoff sewage interception wetland and its construction method for the technical problem of how to control the impact of road surface runoff pollution on the water quality of rivers and lakes

Method used

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  • Road pavement runoff sewage intercepting wetland zone and construction method thereof

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Embodiment

[0030] A wetland construction method for road non-point source pollution control. The wetland system design and construction is carried out on the buffer zone along the road and lake side of the lake. The construction process flow chart is as follows figure 1 As shown, the specific steps are as follows:

[0031] (1) In the buffer zone on the side of the lake along the road, the emergent plant pond 1 is first constructed as the first unit of road surface runoff treatment, and the runoff rainfall of the 20-year rainstorm in the service road section is 2000m 3 . The emergent plant pond 1 shape is built according to the topography of the site, and the area of ​​the emergent plant pond 1 in the present embodiment is 2500m 2 , the depth of the pond is designed to be 1.5m in the middle area and about 0.5m in the edge area. It is a gentle slope terrain, and the total runoff regulation and storage is about 3000m 3 . A clay anti-seepage layer is laid on the bottom of the pond, and 30...

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Abstract

The invention relates to a road pavement runoff sewage intercepting wetland zone and a construction method thereof. An emergent aquatic plant pond, a horizontal subsurface flow constructed wetland, a submerged plant pond and other constructed road pavement source pollution control wetland zones are sequentially arranged nearby a road surface runoff catchment area, surface runoff pollutions are effectively controlled and then discharged into water bodies of rivers and lakes through effects of regulation and storage as well as sedimentation, purification and biodegradation, and pollution load entering the surface water body such as rivers and lakes is reduced. Compared with the prior art, the wetland zone and the construction method have the advantages that more than 30% of the surface runoff pollutions can be removed, so that a guarantee is provided for the water qualities of the water bodies of rivers and lakes and the integrity of ecological systems for the water bodies of rivers and lakes.

Description

technical field [0001] The invention belongs to the field of environmental engineering, in particular to a road pavement runoff interception wet zone and a construction method thereof. Background technique [0002] The road is an important part of the urban catchment surface, and it is also one of the main sources of non-point source pollution of the city's receiving water body. Research shows that compared with other catchment surfaces, the water quality pollution of rainwater runoff on the road surface is the most serious, especially the severity of the initial runoff pollution. Even more than domestic sewage. The pollutants in stormwater runoff mainly come from tire wear, antifreeze use, vehicle leakage, pesticide and fertilizer use, discarded waste, etc. The pollutant components mainly include organic or inorganic compounds, nitrogen, phosphorus, metals, oils . With the rapid growth of urban road construction and traffic flow, the total amount of pollutants on the road...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/32E02B3/00
CPCY02W10/10
Inventor 成水平崔娜欣芮胜阳代嫣然吴娟向东方
Owner TONGJI UNIV
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