The rising aquaculture industry has induced an increase in aquaculture waste, calling for advanced methods to recycle waste in the context of the circular economy. Here, we review methods to treat aquaculture wastewater such as the biofloc technique, aquaponic-aquaculture, rice-fish co-culture, microalgae culture, algal–bacterial culture, membrane and moving bed bioreactors, and electrochemical techniques. We discuss nitrogen cycling, resources recovery, and nitrous oxide emission and mitigations. We observed that aquaculture wastewater irrigation allows for enhanced plant biomass, and biofloc technology improves fish biomass. Nitrogen removal processes, including anammox and partial nitrification, show improved performance. Nitrous oxide emission is mainly dependent on the total ammonia and nitrite concentration.

水产养殖业的兴起导致了水产养殖废弃物的增加，需要在循环经济背景下采用先进的方法来回收废弃物。在这里，我们回顾了处理水产养殖废水的方法，例如生物絮凝技术、鱼菜共生、稻鱼共培养、微藻培养、藻细菌培养、膜和移动床生物反应器以及电化学技术。我们讨论氮循环、资源回收以及一氧化二氮排放和缓解措施。我们观察到，水产养殖废水灌溉可以提高植物生物量，而生物絮凝技术可以提高鱼类生物量。脱氮过程，包括厌氧氨氧化和部分硝化，表现出改进的性能。一氧化二氮排放量主要取决于总氨和亚硝酸盐浓度。