Breeding wastewater is still challenging to be treated due to its large emissions, high contents of organic pollutants and various pathogenic microorganisms. In this study, breeding wastewater was efficiently treated by an electroactive microbial community screened from the native microorganisms of the breeding wastewater in microbial fuel cells (MFC). Good power generation (power density of 438.22 mW m⁻² and open-circuit voltage of 746 mV) and high pollutants removal efficiency (chemical oxygen demand of 70.05% and ammonia nitrogen of 77.43%) were obtained during the breeding wastewater treatment process in MFC. The morphology characterization demonstrated that the screened electroactive microbial community was able to form a thick biofilm on the anode of the MFC. Microbial community analysis revealed that the microorganisms associated with electricity generation and pollutant degradation were significantly increased such as Proteiniphilum from 4.5% to 11%, Prolixibacteraceae from 0.06% to 8.0%, and Novosphingobium from 0.09% to 4.5%, while the pathogenic microorganisms were greatly decreased such as Paeniclostridium from 33.3% to 0.03%, Romboutsia from 29.2% to 0.01%, and Corynebacterium from 8.4% to 0.15% during breeding wastewater treatment process. These results indicated that the MFC constructed using the screened electroactive microbial community may be a sustainable method for breeding wastewater treatment with efficient power generation, organic pollutant degradation, and pathogenic microorganism removal.

养殖废水排放量大、有机污染物含量高、病原微生物多，处理难度大。在这项研究中，养殖废水通过从微生物燃料电池 (MFC) 中养殖废水的原生微生物中筛选出来的电活性微生物群落得到有效处理。发电量好（功率密度438.22 mW m ^-2在 MFC 养殖废水处理过程中获得了较高的开路电压（746 mV）和较高的污染物去除效率（化学需氧量为 70.05%，氨氮为 77.43%）。形态表征表明，筛选的电活性微生物群落能够在 MFC 的阳极上形成厚的生物膜。微生物群落分析显示，与发电和污染物降解相关的微生物显着增加，如嗜蛋白菌从 4.5% 增加到 11%，Prolixibacteraceae从 0.06% 增加到 8.0%，新鞘氨醇菌从 0.09% 增加到 4.5%，而病原微生物则大大增加。减少如类梭菌在养殖废水处理过程中，Romboutsia从 33.3% 到 0.03%，Romboutsia从 29.2% 到 0.01%，棒状杆菌从 8.4% 到 0.15%。这些结果表明，利用筛选出的电活性微生物群落构建的 MFC 可能是一种可持续的养殖废水处理方法，具有高效发电、有机污染物降解和病原微生物去除等优点。