基于Cu（Ⅱ）梯度调控的CH4和N2O协同减排的人工湿地系统
By setting up vertical zonal gradients to regulate Cu(II) concentration in constructed wetland systems, the problem of simultaneously reducing CH4 and N2O emissions in traditional constructed wetlands is solved, achieving synergistic greenhouse gas emission reduction and ensuring system stability and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
In traditional constructed wetland systems, the emission reduction of CH4 and N2O has an antagonistic effect. Furthermore, the preparation of Cu(II)-loaded sludge biochar in existing technologies is costly, involves complicated steps, and may introduce impurities. Manganese-loaded sludge biochar is not effective in reducing greenhouse gas emissions, and manganese is easily leached out, leading to excessive manganese levels in water bodies.
By setting up vertical zoning gradients to regulate Cu(II) concentration in the constructed wetland system, and filling the anaerobic, transition, and aerobic zones with Cu(II)-loaded sludge biochar at different volume ratios, simultaneous reduction of CH4 and N2O emissions is achieved. The slow-release carrier technology of Cu(II)-loaded sludge biochar ensures the system stability and precise regulation of microbial enzyme activity.
It achieves simultaneous emission reduction of CH4 and N2O, strengthens the complete denitrification and methane oxidation processes, ensures the reliability of system operation, reduces the risk of metal ion residue, and promotes the transformation of constructed wetlands from pollution control to synergistic control of greenhouse gases.
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Figure CN120647028B_ABST