Water pollution and energy production are major issues in the context of climate change, urbanization and industrialization. There is need for cost-effective and sustainable processes for wastewater treatment. Here we designed a novel system made of a stack of 12 vertically-arranged constructed wetlands coupled with microbial fuel cells. Performance was evaluated in terms of chemical oxygen demand (COD) removal, NH₄⁺–N, NO₃⁻–N, and PO₄⁻³ removal efficiency, and electricity generation. The results reveal that the efficiency of COD removal increased gradually with decreasing external resistance, reaching 98.5% at 0.08 kΩ. The maximum removal efficiency was 90.4% for NH₄⁺–N at 15 kΩ and 86.9% for NO₃–N at 0.08 kΩ. The maximum power density reached 30.85 mW/m³ at 15 kΩ.

在气候变化，城市化和工业化的背景下，水污染和能源生产是主要问题。需要有成本效益的和可持续的废水处理方法。在这里，我们设计了一个新颖的系统，该系统由12个垂直排列的人工湿地与微生物燃料电池的堆叠构成。根据化学需氧量（COD）去除，NH ₄ ⁺ -N，NO ₃ ^-- N和PO ₄ ^-3去除效率以及发电情况对性能进行了评估。结果表明，COD去除效率随着外部电阻的降低而逐渐提高，在0.08kΩ时达到98.5％。NH ₄ ⁺的最大去除效率为90.4％-N在15kΩ时为86.9％，对于NO ₃ -N在0.08kΩ时为86.9％。在15kΩ时，最大功率密度达到30.85 mW / m ³。