Low-carbon constructed wetland and application thereof

By using lightweight porous ceramics with specific filling degrees in artificial wetlands, efficient nitrogen removal and low methane emissions are achieved in the aerobic environment, the contradiction between nitrogen removal and methane emissions in artificial wetlands is solved and the ecological and environmental benefits are improved.

CN119977168APending Publication Date: 2025-05-13NANJING UNIV OF INFORMATION SCI & TECH
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Patent Information

Application Number
CN202411686100.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-24
Publication Date
2025-05-13

AI Technical Summary

Technical Problem

It is difficult for artificial wetlands to take into account both high efficiency nitrogen removal and low methane emissions during the nitrogen removal process. The existing measures have problems such as high energy consumption and expensive fillers, and lack economical and easy-to-use solutions.

Method used

Lightweight porous ceramic granules with a specific filling degree are used as artificial wetland fillers, and efficient nitrogen removal is achieved in an aerobic environment through the designed water flow method, while effectively reducing methane emissions.

Benefits of technology

It has achieved efficient nitrogen removal in an aerobic environment, and at the same time it has greatly reduced methane emissions, solved the contradiction between nitrogen removal and methane emissions in traditional artificial wetlands, and improved ecological and environmental benefits.

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Abstract

The invention discloses a low-carbon constructed wetland and application thereof.The constructed wetland comprises a wetland body device, a transverse partition plate is arranged in the body device to divide the device into an upper layer and a lower layer, the lower layer is divided into a plurality of cavities by arranging a plurality of longitudinal partition plates, and a plurality of first water passing holes are formed in the transverse partition plate; a plurality of second water passing holes are formed below the longitudinal partition plates, the second water passing holes are formed at intervals from the first longitudinal partition plate, a water inlet and a water outlet are formed in the two sides of the upper layer of the body device respectively, the upper layer of the body device is filled with zeolite, and all cavities of the lower layer of the body device are filled with light ceramsite. The constructed low-carbon constructed wetland has the advantages of being good in water treatment effect, low in operation cost, resistant to blockage, extremely low in methane emission flux and the like, efficient denitrification of polluted water can be achieved in the aerobic environment, meanwhile, the problem of high CH4 emission in the constructed wetland is effectively solved, efficient removal of pollution is achieved, and meanwhile effective cooperation of reduction of carbon emission is achieved.
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Citation Information

Patent Citations

  • Enhanced biological-ecological modular sewage treatment system

    CN111977808A

  • Novel multi-structure modular artificial wetland system

    CN217868321U