Effects of two fillers and process conditions on the water treatment efficiency of a continuous packed bed biofilm reactor

文献类型： 外文期刊

第一作者： Fang, Yijing

作者： Fang, Yijing;Xu, Qiyou;Fang, Yijing;Xu, Qiyou;Fang, Yijing;Li, Zhifei;Wang, Guangjun;Xia, Yun;Zhang, Kai;Gong, Wangbao;Yu, Ermeng;Xie, Wenping;Li, Hongyan;Tian, Jingjing;Xie, Jun;Li, Zhifei;Wang, Guangjun;Xia, Yun;Zhang, Kai;Gong, Wangbao;Yu, Ermeng;Xie, Wenping;Li, Hongyan;Tian, Jingjing;Xie, Jun

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关键词： packed bed biofilm reactor; filling; denitrification; hydraulic retention time; aquaculture wastewater

期刊名称：LETTERS IN APPLIED MICROBIOLOGY （ 影响因子：2.0； 五年影响因子：2.6 ）

ISSN： 0266-8254

年卷期： 2024 年 77 卷 7 期

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收录情况： SCI

摘要： This study evaluated the treatment efficiency of two selected fillers and their combination for improving the water quality of aquaculture wastewater using a packed bed biofilm reactor (PBBR) under various process conditions. The fillers used were nanosheet (NS), activated carbon (AC), and a combination of both. The results indicated that the use of combined fillers and the hydraulic retention time (HRT) of 4 h significantly enhanced water quality in the PBBR. The removal rates of chemical oxygen demand, NO2-N, total suspended solidsTSS, and chlorophyll a were 63.55%, 74.25%, 62.75%, and 92.85%, respectively. The microbiota analysis revealed that the presence of NS increased the abundance of microbial phyla associated with nitrogen removal, such as Nitrospirae and Proteobacteria. The difference between the M1 and M2 communities was minimal. Additionally, the microbiota in different PBBR samples displayed similar preferences for carbon sources, and carbohydrates and amino acids were the most commonly utilized carbon sources by microbiota. These results indicated that the combination of NS and AC fillers in a PBBR effectively enhanced the treatment efficiency of aquaculture wastewater when operated at an HRT of 4 h. The findings provide valuable insights into optimizing the design of aquaculture wastewater treatment systems.

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