Feasibility of achieving advanced nitrogen removal via endogenous denitratation/anammox
Feasibility of achieving advanced nitrogen removal via endogenous denitratation/anammox
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内源反硝化/厌氧氨氧化实现高级脱氮的可行性
DOI：
10.1016/j.biortech.2021.124666
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发表时间：
2021
影响因子：
11.4
通讯作者：
Su Zengjian
中科院分区：
文献类型：
--
作者：
Lu Wenkang;Ma Bin;Wang Qingqing;Wei Yan;Su Zengjian
为了实现高级脱氮，开发了一种同时内源性脱硝/厌氧氨氧化（EDA）工艺，该工艺可以在顺序批式反应器中进行。结果表明，当进水COD/TN比为3.16时，出水TN为1.87 mg/L，可实现深度脱氮。厌氧氨氧化脱氮率占EDA工艺总氮去除率的76%。微生物群落分析显示，厌氧氨氧化菌和反硝化糖原积累菌（DGAOs）的检出率分别为0.91%和5.05%。DGAOs可以利用胞内碳源为厌氧氨氧化提供亚硝酸盐，实现深度脱氮。此外，在EDA工艺的基础上，提出了一种有前途的深度脱氮技术，以减少氧源和碳源的消耗。
For achieving advanced nitrogen removal, a simultaneous endogenous denitratation/anammox (EDA) process was developed that could be undertaken in a sequencing batch reactor. The results indicated that, when the influent COD/TN ratio was 3.16, the advanced nitrogen removal was achieved with the effluent TN of 1.87 mg/L. Nitrogen removal by anammox accounted for 76% of TN removed in the EDA process. Microbial community analysis illuminated that anammox bacteria and denitrifying glycogen accumulating organisms (DGAOs) of 0.91% and 5.05% were detected, respectively. DGAOs could provide nitrite for anammox by using the intracellular carbon source to achieve advanced nitrogen removal. Additionally, based on the EDA process, a promising technique for achieving advanced nitrogen removal was proposed to reduce the consumptions of both the oxygen and the carbon sources.