Zonal vertical current artificial wetland system with reinforced denitrification function

A technology of constructed wetland system and functional zoning, which is applied in the field of vertical flow constructed wetland system with enhanced denitrification function, can solve problems such as insufficient denitrification performance, and achieve the effect of avoiding the difficulty in controlling the amount of carbon source added.

Active Publication Date: 2013-09-04
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

[0006] The technical problem solved by the present invention is to overcome the deficiencies in the denitrification performance of traditional vertical flow constructed wetlands, and

Method used

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  • Zonal vertical current artificial wetland system with reinforced denitrification function
  • Zonal vertical current artificial wetland system with reinforced denitrification function
  • Zonal vertical current artificial wetland system with reinforced denitrification function

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Embodiment Construction

[0027] For further illustrating the present invention, specifically illustrate in conjunction with following examples:

[0028] see figure 1 , 2, the invention has obvious functional divisions, the upper layer of the wetland mainly realizes enhanced nitrification, and the lower layer mainly realizes enhanced denitrification. The upper wetland enhanced nitrification area is composed of water distribution pipe 1, wetland fine packing area 2, enhanced reoxygenation and solid carbon source supplementary pipe 3, ammonia nitrogen adsorption-regeneration area 4, and wetland plants 5; the lower enhanced denitrification area is composed of gravel transition layer 6, solid It consists of carbon source filling area 7, wetland filling area 8, water collection area 9, water collection pipe 10, and siphon drainage pipe 11. The water collection pipe 10 is located in the catchment area 9, and together they are located at the bottom of the wetland system, above which are the wetland filling ...

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Abstract

The invention relates to a zonal vertical current artificial wetland system with a reinforced denitrification function, which comprises an upper layer and a lower layer. The upper layer is a nitrification reinforcing zone; the lower layer is a denitrification reinforcing zone; the upper layer comprises a water distribution pipe, a wetland fine filler zone, reoxygenation reinforcing and solid source supplementing pipes, an ammonia nitrogen adsorption-regeneration zone and wetland plants; the lower layer comprises a gravel transition layer, a solid carbon source filling zone, a wetland filler zone, a water collecting zone, water collecting pipes and a siphon drainage pipe; the water collecting pipes are positioned in the water collecting zone and are positioned at the bottommost layer of the wetland system together; the wetland filler zone, the solid carbon source filling zone, the gravel transition layer, the ammonia nitrogen adsorption-regeneration zone and the wetland fine filler zone are sequentially arranged above the water collecting pipes; and the wetland plants are planted on the surface layer of a wetland. The system disclosed by the invention has the advantages of strong continuous denitrification capacity, low operation cost, simplicity in maintenance and the like.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a vertical flow artificial wetland system with enhanced denitrification function and divisional type suitable for removing ammonia nitrogen in sewage with a low carbon-to-nitrogen ratio. Background technique [0002] Ammonia nitrogen is one of the main pollutants in my country's water system. If it is not treated effectively, it will lead to serious water pollution problems. Vertical flow constructed wetland is an efficient and low-cost sewage treatment technology, which has been widely used in the fields of urban storm runoff, domestic sewage in villages and towns, industrial wastewater and agricultural drainage. However, the vertical flow constructed wetland has a significant defect of weak denitrification ability. In vertical flow constructed wetlands, the removal of nitrogen mainly depends on substrate adsorption, filtration, precipitation, ammonia volatiliz...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34
CPCY02W10/10
Inventor 沈志强周岳溪
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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