In the present study, we investigated the role of constructed wetlands (CWs) integrated with a bioelectrochemical system (BES), which can concurrently treat wastewater effectively with energy recovery. This CW integrated system utilizes NH₄⁺–N (96.66%), NO₃⁻–N (83.09%), PO₄³⁻–P (91.04%) and SO₄²⁻ (83.98%) to enable effective pollutant removal from sewage wastewater. Nitrite accumulation was not observed in the systems with applied voltage >15 mV and MFCs–ME. The ME-30-CWs system favours the removals of all pollutants, except ammonia. The average power density and current density of 1.723 mW m⁻² and 5.423 mA m⁻² were recorded in MFC–CWs during wastewater treatment. Bacteria causing waterborne diseases such as Shigella sp. and Salmonella sp. were significantly eliminated in the CW integrated system. The promising potential of CWs and bioelectrochemical technology can be an effective alternative to the water–energy nexus for waste stream applications.

中文翻译：

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使用人工湿地与生物电化学系统集成的污水处理系统，具有能量回收功能

在本研究中，我们调查了与生物电化学系统（BES）集成的人工湿地（CW）的作用，该系统可同时有效地处理废水和回收能量。该CW集成系统利用NH ₄ ⁺ –N（96.66％），NO ₃ ⁻ –N（83.09％），PO ₄ ³⁻ –P（91.04％）和SO ₄ ²⁻（83.98％）可以有效去除污染物污水。在施加电压> 15 mV的系统和MFCs–ME中，未观察到亚硝酸盐积累。ME-30-CWs系统有利于除去氨以外的所有污染物。平均功率密度和电流密度为1.723 mW m ^-2和5.423 mA m ^-2在废水处理过程中被记录在MFC–CW中。引起水传疾病的细菌，例如志贺氏菌。和沙门氏菌属。在CW集成系统中被大大消除。污水处理厂和生物电化学技术的潜力巨大，可以有效替代废水流中的水能关系。