A novel hybrid bioelectrochemical membrane reactor with integrated microfiltration membrane as the separator between electrodes is developed for domestic wastewater treatment. After accumulation of biofilm, the organic pollutants are mainly degraded in anodic compartment, and microfiltration membrane blocks the adverse leakage of dissolved oxygen from aerated cathodic compartment. The maximum system power output is restricted by gas-water ratio following a Monod-like relationship. Within the tested gas-water ratios ranging from 0.6 to 42.9, the half-saturation constant (K_Q) is 5.9 ± 0.9 with a theoretic maximum power density of 20.4 ± 1.0 W m⁻³. Energy balance analysis indicates an appropriate gas-water ratio regulation (from 2.3 to 28.6) for cathodic compartment is necessary to obtain positive energy output for the system. A maximum net electricity output is 9.09 × 10⁻³ kWh m⁻³ with gas-water ratio of 17.1. Notably, the system achieves the chemical oxygen demand removal of 98.3 ± 0.3%, ammonia nitrogen removal of 99.6 ± 0.1%, and total nitrogen removal of 80.0 ± 0.9%. This work verifies an effective integration of microfiltration membrane into bioelectrochemical system as separator for high-quality effluent and provides an insight into the operation and regulation of biocathode system for effective electrical energy output.

新型混合生化膜反应器集成微滤膜作为电极之间的分隔符的新型混合生物电化学膜反应器开发用于生活污水。生物膜积累后，有机污染物主要在阳极室中降解，而微滤膜则阻止了溶解氧从充气阴极室中的不利泄漏。系统最大输出功率受遵循Monod型关系的气水比的限制。在测试的气水比范围为0.6至42.9的范围内，半饱和常数（K _Q）为5.9±0.9，理论最大功率密度为20.4±1.0 W m ^-3。能量平衡分析表明，为使​​系统获得正能量输出，有必要为阴极隔室设置适当的气水比调节比（从2.3到28.6）。最大净电力输出为9.09×10 ^-3  kWh m ^-3，气水比为17.1。值得注意的是，该系统的化学需氧量去除率为98.3±0.3％，氨氮去除率为99.6±0.1％，总氮去除率为80.0±0.9％。这项工作验证了微滤膜是否可以有效地集成到生物电化学系统中，作为高质量废水的分离器，并提供了对生物阴极系统的运行和调节的见解，以实现有效的电能输出。