National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
Bioresour Technol. 2022 Sep;360:127645. doi: 10.1016/j.biortech.2022.127645. Epub 2022 Jul 19.
The collapse of simultaneous partial nitrification, denitrification and anammox (SPNDA) system, caused by the destruction of partial nitrification (PN), is the most likely phenomenon to occur. Therefore, recovering the process quickly and maintaining efficient nitrogen removal is a valuable topic for research. In the anaerobic/aerobic/anoxic operation mode, SPNDA process was used to treat domestic sewage in a sequencing batch biofilm reactor. After the deterioration of PN effect, with the addition of hydroxylamine, the activity of ammonia-oxidizing bacteria in the nitrobacteria increased (61.0-91.3 %), whereas the accumulation of nitrite quickly recovered to 90.4 % within 5 days. Meanwhile, the nitrogen removal efficiency improved (61.8-95.6 %) and the effluent TN was 2.1 mg/L. Furthermore, Candidatus Brocadia was enriched (0.50-1.82 %) in the system. The results indicated that the addition of hydroxylamine was an effective strategy to recover and economically maintain the SPNDA process for advanced nitrogen removal from domestic sewage.
由于部分硝化（PN）的破坏，同时发生的部分硝化-反硝化-厌氧氨氧化（SPNDA）系统的崩溃是最有可能发生的现象。因此，快速恢复该过程并保持高效的氮去除是一个有价值的研究课题。在厌氧/好氧/缺氧操作模式下，序批式生物膜反应器中采用 SPNDA 工艺处理生活污水。在 PN 效果恶化后，加入羟胺，硝化细菌中的氨氧化菌活性增加（61.0-91.3%），而亚硝酸盐的积累在 5 天内迅速恢复到 90.4%。同时，氮去除效率提高（61.8-95.6%），出水 TN 为 2.1mg/L。此外，系统中富集了（0.50-1.82%）Candidatus Brocadia。结果表明，添加羟胺是恢复和经济维持用于生活污水高级脱氮的 SPNDA 工艺的有效策略。
