Integrated moving bed biofilm reactor with partial denitrification-anammox for promoted nitrogen removal: Layered biofilm structure formation and symbiotic functional microbes,Science of the Total Environment

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Integrated moving bed biofilm reactor with partial denitrification-anammox for promoted nitrogen removal: Layered biofilm structure formation and symbiotic functional microbes
Science of the Total Environment ( IF 8.2 ) Pub Date : 2022-05-27 , DOI: 10.1016/j.scitotenv.2022.156339
Zhaoxia Xue ₁ , Teng Zhang ₁ , Yiwen Sun ₁ , Tongxin Yin ₁ , Jiashun Cao ₂ , Fang Fang ₁ , Qian Feng ₁ , Jingyang Luo ₁

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Partial denitrification/anaerobic ammonia oxidation (anammox) (PD/A) is currently an advanced nitrogen removal process. This study developed a PD/A system in a moving bed biofilm reactor. Results showed that the nitrogen removal efficiency reached 76.60% with a COD/NO-N of 2.0, and the contribution of anammox was 88.01%. Further analysis showed that the biocarriers could form layered pH and dissolved oxygen structures to promote the aggregation of different functional bacteria at various depths, thus stabilizing the coupled process. Microbial structure analysis showed that the abundance of , responsible for denitrification, increased from 0% to 36.27% between day 0 and day 120, while the abundance of , responsible for anammox, decreased from 10.41% to 2.20%. The synergistic effect of and enabled stable and efficient removal of nitrogen. This study proposed a novel configuration of the PD/A process and provided a theoretical basis for its promotion and application.

中文翻译：

部分反硝化-厌氧氨氧化促进脱氮的一体化移动床生物膜反应器：层状生物膜结构形成与共生功能微生物

部分反硝化/厌氧氨氧化（anammox）（PD/A）是目前先进的脱氮工艺。本研究开发了移动床生物膜反应器中的 PD/A 系统。结果表明，COD/NO-N为2.0时，脱氮效率达到76.60%，厌氧氨氧化的贡献率为88.01%。进一步分析表明，生物载体可以形成分层的pH和溶解氧结构，促进不同功能细菌在不同深度的聚集，从而稳定耦合过程。微生物结构分析表明，在第0天到第120天期间，负责反硝化作用的丰度从0%增加到36.27%，而负责厌氧氨氧化的丰度从10.41%下降到2.20%。和的协同作用，实现了稳定、高效的脱氮。本研究提出了一种新颖的PD/A流程构型，为其推广应用提供了理论基础。

更新日期：2022-05-27

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