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Urban inland river rainfall runoff purification suspended wall self-oxygenating subsurface wetland device

A subsurface flow wetland and self-oxygenation technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of insufficient matrix layer and poor purification effect of floating island wetlands , to achieve flexible assembly, prevent wetland blockage, and facilitate disassembly and maintenance

Active Publication Date: 2014-12-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problem that the current subsurface wetland directly arranged in the channel will reduce the hydraulic radius of the channel and affect the flood discharge, and the purification effect is poor, while the floating island wetland has no sufficient matrix layer for the suspension state, and the purification effect is poor. Provide a self-oxygenated underflow wetland device for purification of cantilever wall by rainwater runoff in urban inland rivers

Method used

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  • Urban inland river rainfall runoff purification suspended wall self-oxygenating subsurface wetland device
  • Urban inland river rainfall runoff purification suspended wall self-oxygenating subsurface wetland device
  • Urban inland river rainfall runoff purification suspended wall self-oxygenating subsurface wetland device

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specific Embodiment approach 1

[0026] Specific embodiment one: The rainwater runoff purification of urban inland rivers of this embodiment is a suspended wall self-oxygenated underflow wetland device, which includes a river-inflow rainwater runoff distribution system 1, a suspended wall self-oxygenated underflow wetland system 2 and a wetland drainage and drop Aeration system 3; the inflow rainwater runoff water distribution system 1 is installed on the inner wall of the urban inland river dam 5, and the overhanging self-oxygenated submerged wetland system 2 is installed directly below the inflow rainwater runoff water distribution system 1 and in the urban inland river dam 5 On the wall, the wetland drainage and water drop aeration system 3 is installed at the bottom of the overhanging self-oxygenated submerged wetland system 2, and the wetland drainage and water drop aeration system 3 is arranged perpendicular to the inner wall of the urban inland river dam;

[0027] The rainwater runoff distribution system 1...

specific Embodiment approach 2

[0033] Specific embodiment two: this embodiment is different from specific embodiment one in that a row of openings are evenly distributed along the length direction of the lower half circumference of the perforated cloth water pipe 1-2, the diameter of the opening is 4mm, and the perforated cloth water pipe 1-2 The other parameters and the number of perforated cloth pipes 1-2 depend on the peak water discharge. Others are the same as the first embodiment.

specific Embodiment approach 3

[0034] Specific embodiment three: The difference between this embodiment and specific embodiment one or two is: the size of the wetland PVC tank 2-1 is length×width×height 1m×1m×0.8m, perforated cloth water pipe (1 -2) 1m long, the thickness of the PVC sheet of the wetland PVC tank body 2-1 is 10mm, and the wetland PVC tank body 2-1 is installed at a position 10cm-20cm directly below the perforated cloth water pipe 1-2. Others are the same as the first or second embodiment.

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Abstract

The invention provides an urban inland river rainfall runoff purification suspended wall self-oxygenating subsurface wetland device, and relates to a subsurface wetland device. The device solves the technical problems that an existing subsurface wetland is directly distributed in a river channel, the hydraulic radius of the river channel can be reduced, flood discharge is adversely influenced, the purification effect is poor, and a floating island wetland is not provided with a sufficient substrate layer in order to achieve a suspension state, so that the purification effect is poor. The urban inland river rainfall runoff purification suspended wall self-oxygenating subsurface wetland device comprises a river rainfall runoff water distributing system, a suspended wall self-oxygenating subsurface wetland system and a wetland discharged water drop aeration system, wherein the river rainfall runoff water distributing system is installed above an urban inland river dam inner wall wetland, the suspended wall self-oxygenating subsurface wetland system is installed on an urban inland river dam wall face, and the wetland discharged water drop aeration system is installed at the bottom of the suspended wall self-oxygenating subsurface wetland system. The urban inland river rainfall runoff purification suspended wall self-oxygenating subsurface wetland device has the advantages that the hydraulic radius of the river channel cannot be reduced and the purification effect is good, and can be applied to the purification field of urban inland river rain.

Description

Technical field [0001] The invention relates to a submerged wetland device, in particular to a submerged wetland device for purifying rainwater runoff of an urban inland river. Background technique [0002] In the initial stage of construction, every city has one or several inland rivers, whose main function is to discharge floods and urban sewage in the rainy season. With the improvement of urbanization, people have higher and higher requirements for environmental quality, and the water function of urban inland rivers has also changed from sewage and flood discharge rivers to landscape and flood discharge rivers. However, due to the poor water quality of the first rain in the city, the rainwater after surface runoff approaches or exceeds the water pollution level of the urban sewage plant. The average COD value is greater than 100mg / L, sometimes even as high as 300mg / L, especially the level of nitrogen and phosphorus is much higher. In accordance with the water quality requirem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 王丽李浩然何玉荣王丽杰霍玉鑫
Owner HARBIN INST OF TECH