This study investigated the efficacy of the rotating algal biofilm (RAB) for treating soy sauce wastewater (SW) and its related treatment mechanisms. The RAB system demonstrated superior nutrient removal (chemical oxygen demand, ammonium nitrogen, total nitrogen, and phosphorus for 92 %, 94 %, 91 %, and 82 %, respectively) and biofilm productivity (14 g m d) at optimized 5-day harvest time and 2-day hydraulic retention time. This was mainly attributed to the synergistic interactions within the algae-fungi ()-bacteria ( and ) consortium, which effectively assimilated certain extracellular polymeric substances into biomass to enhance algal biofilm growth. Increased algal productivity notably improved protein and essential amino acid contents in the biomass, suggesting a potential for animal feed applications. This study not only demonstrates a sustainable approach for managing SW but also provides insight into the nutrient removal and biomass conversion, offering a viable strategy for large-scale applications in nutrient recovery and wastewater treatment.

中文翻译：

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旋转藻生物膜系统修复酱油废水的效果及机制


本研究探讨了旋转藻类生物膜（RAB）处理酱油废水（SW）的效果及其相关处理机制。 RAB 系统在优化的 5 天收获中表现出卓越的养分去除率（化学需氧量、铵氮、总氮和磷分别为 92%、94%、91% 和 82%）和生物膜生产力 (14 g m d)时间和2天的水力停留时间。这主要归因于藻类-真菌()-细菌(和)联合体内部的协同相互作用，有效地将某些细胞外聚合物物质同化为生物质，以促进藻类生物膜的生长。藻类生产力的提高显着提高了生物质中的蛋白质和必需氨基酸含量，表明其在动物饲料应用中的潜力。这项研究不仅展示了管理SW的可持续方法，而且还提供了对养分去除和生物质转化的深入了解，为养分回收和废水处理的大规模应用提供了可行的策略。