Mustard tuber wastewater (MTWW) was used as both anolyte and catholyte in biocathode microbial fuel cell (BMFC). The results showed simultaneous nutrient and carbon removal and electricity generation were realized in BMFC. Excellent Chemical Oxygen Demand (COD) removal occurred in both anode (>90%) and cathode (>91%). Concerning nutrient removal, it was mainly removed in cathode. The maximum total phosphorus (TP) removal could reach 80.8 ± 1.0% by biological action. Simultaneous nitrification and denitrification (SND) was realized in cathode. The bacteria involved in nitrification were Nitrosomonas and SM1A02. Oceanimonas and Saprospiraceae_uncultured (anaerobic denitrifier), Thauera, Stenotrophomonas, Flavobacterium and Marinobacter (aerobic denitrifier), and Thioalkalispira (autotrophic denitrifier) were responsible for denitrification. Considering slight variation of anode and cathode pH, it could be concluded that MTWW was adequately self-buffered when used as electrolyte. Furthermore, electricity generation decreased with cathodic dissolved oxygen (DO) declining. These findings provide a novel method for MTWW resourceful treatment.

在生物阴极微生物燃料电池（BMFC）中，芥末块茎废水（MTWW）既用作阳极电解液，又用作阴极电解液。结果表明，在BMFC中实现了养分，碳的同时去除和发电。阳极（> 90％）和阴极（> 91％）均具有出色的化学需氧量（COD）去除能力。关于营养去除，主要在阴极去除。通过生物作用，最大总磷（TP）去除率可达到80.8±1.0％。在阴极实现了同时硝化和反硝化（SND）。硝化过程中涉及的细菌是亚硝化梭菌和SM1A02。Oceanimonas和Saprospiraceae_uncultured（厌氧反硝化器），Thauera，嗜，黄杆菌和Marinobacter（好氧反硝化菌），和Thioalkalispira（自养硝化细菌）负责反硝化作用。考虑到阳极和阴极pH的微小变化，可以得出结论，MTWW用作电解质时具有足够的自我缓冲性。此外，随着阴极溶解氧（DO）的下降，发电量减少。这些发现为MTWW足智多谋的治疗提供了一种新方法。