Remediation of mariculture wastewater is of great practical importance. In this study, sediment microbial fuel cells (SMFCs) were adopted and carbon felt anodes were modified to enhance COD and ammonia removal in mariculture system. The results showed that the SMFC anode with 5 % (w/w) graphene oxide (GO) coating performed best in pollutants removal and electricity generation. The maximum power density approached 132 mW/m², nearly 4.5 times higher than the unmodified anode. The removal efficiency of COD and ammonia reached 82.1 % and 95.8 % respectively, both improved compared with the control and chemical modification. The modified anode effectively enriched the electrogenic Sulfurovum and Lactobacillus and thus led to a significant improvement in the electrochemical performance of SMFC. This study demonstrates the successful application of SMFCs with GO modified anodes in the in-situ removing pollutants and SMFCs present obvious remediation potential on the contaminated mariculture inhabitant.

海水养殖废水的修复具有重要的现实意义。本研究采用沉积物微生物燃料电池 (SMFC) 并对碳毡阳极进行改造，以提高海水养殖系统中 COD 和氨的去除率。结果表明，具有 5% (w/w) 氧化石墨烯 (GO) 涂层的 SMFC 阳极在污染物去除和发电方面表现最佳。最大功率密度接近132 mW/m ²，是未改性阳极的近4.5倍。COD和氨的去除率分别达到82.1%和95.8%，均较对照和化学改性有所提高。改性阳极有效富集产电硫磺菌和乳酸菌从而导致 SMFC 的电化学性能显着提高。本研究证明了具有 GO 改性阳极的 SMFC 在原位去除污染物中的成功应用，并且 SMFC 对受污染的海水养殖居民具有明显的修复潜力。