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Solid carbon source enhanced nitrogen removal system of horizontal subsurface flow constructed wetland

A solid carbon source, constructed wetland technology, applied in the fields of water pollutants, chemical instruments and methods, biological water/sewage treatment, etc. Easy operation and maintenance

Inactive Publication Date: 2013-08-21
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the denitrification performance of traditional constructed wetlands, and provide a solid carbon source enhanced denitrification system for horizontal subsurface flow constructed wetlands

Method used

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  • Solid carbon source enhanced nitrogen removal system of horizontal subsurface flow constructed wetland
  • Solid carbon source enhanced nitrogen removal system of horizontal subsurface flow constructed wetland

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Embodiment Construction

[0023] For further illustrating the present invention, specifically illustrate in conjunction with following examples:

[0024] see figure 1 , 2 , the system of the present invention, each area is set in the constructed wetland, the water inlet pipe 1 and the discharge pipe 11 are respectively located at both ends of the wetland; the wetland coarse filling area 3 is all over the bottom of the wetland, and the rear section of the wetland is provided with The depth of the catchment area 8 is from top to bottom. At the bottom of the catchment area 8 is a water discharge hole 9 leading to a drainage area 10 connected to a discharge pipe 11 . The upper part of the wetland coarse fill area 3 is covered with a wetland fine fill area 4, and the water distribution area 2 is set at the front end of the wetland fine fill area 4 (near the end of the water inlet pipe 1); wetland plants 7 are planted in the wetland fine fill area 4 . The solid carbon source enhanced denitrification zone ...

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Abstract

The invention relates to the technical field of sewage treatment, and particularly relates to an enhanced nitrogen removal horizontal subsurface flow constructed wetland system taking thermoplastic biodegradable polyester as a solid carbon source. The system comprises a water inlet pipe (1), a water distribution region (2), a wetland coarse stuff region (3), a wetland fine stuff region (4), a solid carbon source throwing pipe (5), a solid carbon source enhanced denitrification region (6), wetland plants (7), a water collection region (8), water outlet holes (9), a water drainage region (10) and a discharge pipe (11). The wetland system can increase the carbon-nitrogen ratio of sewage and realize the removal of nitrate in low-carbon-nitrogen-ratio sewage. The system has the advantages of high continuous nitrogen removal capacity, simple operating maintenance and the like.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an enhanced denitrification horizontal underflow artificial wetland system using thermoplastic biodegradable polyester as a carbon source, which is suitable for removing nitrate in low C / N ratio sewage. Background technique [0002] Nitrogen pollution is one of the main problems in my country's water environment. Nitrogen pollution in low organic pollution water is a prominent problem of future environmental pollution after the completion of point source pollution control in my country. If this kind of low C / N water is not further treated, it will directly flow into sensitive water bodies such as lakes and reservoirs, which will cause serious water environmental pollution problems. The nitrate in the water environment mainly comes from the direct discharge of industry and agriculture or the conversion of other nitrogen-containing compounds through nitrification. [000...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F101/16
CPCY02W10/10
Inventor 沈志强周岳溪
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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