厌氧氨氧化菌
甜菜碱
反硝化
氮气
甘氨酸
化学
废水
环境化学
过程(计算)
制浆造纸工业
环境科学
环境工程
生物化学
反硝化细菌
有机化学
计算机科学
工程类
氨基酸
操作系统
作者
Linxiang Huang,Wenlu Li,Zhenguo Chen,Yongxing Chen,Yonggan Li,Xiaojun Wang,Yanlei Yuan
标识
DOI:10.1016/j.jwpe.2024.104855
摘要
Advanced nitrogen removal from real industrial nitrogen-containing wastewater was investigated in the simultaneous partial denitrification-anammox (PD-anammox) process with glycine betaine (GB) addition. Two parallel reactors (R1 as the control and R2 supplemented with 0.1 mmol/L GB additionally) were continuously operated with different COD/NO3−-N (C/N) ratios of 3.0, 2.5, and 2.0, respectively. It was indicated that adding 0.1 mmol/L GB significantly enhanced the partial denitrification and anammox reaction rates by 23.97 % and 41.90 %, as well as decreasing carbon source requirement by 16.67 %. Moreover, the nitrogen removal efficiency in R2 reached 89.35 %, higher than that of R1 (74.65 %). The higher protein/polysaccharide (6.73–8.50) in R2 played a critical role in promoting microbial stability in the treatment of real industrial wastewater. Microbial community analysis showed that Ca. Brocadia sp. was the primary anammox genus, while OLB8 (18.06 %) in R2 and Thauera (17.67 %) in R1 were the dominant denitrification genera. In general, exogenous GB can reduce the requirement for carbon source, improve the microbial activity of AnAOB and HDB, thereby enhancing the nitrogen removal performance of the PD-anammox system in treating actual industrial wastewater. This work provides an economical and environment-friendly solution for the effective treatment of actual industrial ammonium nitrate-containing wastewater.
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