The removal of organics and saline while simultaneously recovering nutrients in municipal wastewater was achieved in a microbial electrolysis desalination cell (MEDC). System performance in terms of organics removal, desalination, and nitrogen and phosphate recovery was investigated under different ion exchange membrane (IEM) pairs and applied voltages. Compared with single-IEM stack MEDC, the MEDC with multi-IEM pairs proved to be able to perform an effective performance for chemical oxygen demand (COD) removal, desalination, and nutrient recovery. The energy consumption for netrient separation and recovery was 0.12 kWh/m³ with 3-IEM stacks at applied voltage of 2 V. The MEDC system with 3-IEM stacks showed 75.5 ± 1.4% COD removal and 8.5 ± 1.1% Coulombic efficiency. The conductivity in effluent decreased to 545 μS/cm (lower than the single-IEM stack, 934 μS/cm), while conductivity in the product chamber was concentrated to 2160 μS/cm (higher than the single-IEM stack, 998.5 μS/cm). Moreover, the recovery efficiencies of nitrogen and phosphate reached 66 ± 5.3% and 66.7 ± 4.7%, respectively. Furthermore, the CV curve and microbial community structure showed that electrical stimulation increased the abundances of electrogenic bacteria (Rhodocyclaceae and Geobacter), which enhanced COD removal and electron transfer. These results clearly demonstrate that the MEDC is an energy efficient technology for the treatment of municipal wastewater, while simultaneously recovering nitrogen and phosphate resources.

在微生物电解淡化池（MEDC）中实现了有机物和盐水的去除，同时回收了市政废水中的养分。在不同的离子交换膜（IEM）对和施加的电压下，研究了系统性能，包括有机物去除，脱盐以及氮和磷酸盐的回收率。与单IEM堆MEDC相比，带有多IEM对的MEDC被证明能够有效去除化学需氧量（COD），淡化海水和回收养分。净分离和回收的能耗为0.12 kWh / m ³带有3-IEM电池组的外加电压为2V。带有3-IEM电池组的MEDC系统的COD去除率为75.5±1.4％，库伦效率为8.5±1.1％。废水中的电导率降至545μS/ cm（低于单个IEM堆栈，即934μS/ cm），而产品室中的电导率集中至2160μS/ cm（高于单个IEM堆栈，即998.5μS/ cm）。厘米）。此外，氮和磷酸盐的回收效率分别达到66±5.3％和66.7±4.7％。此外，CV曲线和微生物群落结构表明，电刺激升高的产电细菌的丰度（Rhodocyclaceae和地杆菌），从而增强了COD的去除和电子转移。这些结果清楚地表明，MEDC是一种用于处理城市废水的节能技术，同时可以回收氮和磷酸盐资源。