Pharmaceutical Engineering Technology Research Center, Harbin University of Commerce, Harbin, People's Republic of China.
Songliao River Basin Water Resources Protection Bureau, Changchun, People's Republic of China.
J Appl Microbiol. 2022 Feb;132(2):1091-1103. doi: 10.1111/jam.15267. Epub 2021 Sep 27.
Our purpose was to clarify the effect of sulfamethoxazole (SMX) on the start-up period, particle formation, and treatment efficiency of an aerobic granular sludge system.
We compared an R1 granular sequencing batch reactor (GSBR) started with 5 μg L SMX and an R2 GSBR started without SMX, as a control, to investigate the impact of a trace amount of SMX (5 μg L ) on aerobic granular sludge (AGS) characteristics and the removal of conventional contaminants. AGS granulation in the R1 system was not inhibited by SMX, but the granule particle size was smaller than that in the R2 system. Both systems had good performance removing conventional pollutants. Extracellular polymeric substance secretion in the R1 system was lower than that in the R2 system. After stabilizing reactor operations, the SMX removal efficiency in the R1 system (73.93%) was higher than that in the R2 system (70.66%). The start-up modes also determined the differences in the microbial community structure of the AGS systems.
SMX-activated AGS performed better than AGS without SMX.
The study can help engineers determine start-up modes with varieties of antibiotics in AGS processes and provide references for the optimization of water treatment processes.
本研究旨在阐明磺胺甲噁唑（SMX）对好氧颗粒污泥系统启动期、颗粒形成和处理效率的影响。
我们对比了一个以 5μg/L SMX 启动的 R1 好氧颗粒序批式反应器（GSBR）和一个未添加 SMX 的 R2 GSBR（对照组），以研究痕量 SMX（5μg/L）对好氧颗粒污泥（AGS）特性和常规污染物去除的影响。AGS 在 R1 系统中的颗粒化未被 SMX 抑制，但颗粒粒径小于 R2 系统。两个系统对常规污染物的去除均表现良好。R1 系统中胞外聚合物的分泌量低于 R2 系统。在稳定反应器运行后，R1 系统中 SMX 的去除效率（73.93%）高于 R2 系统（70.66%）。启动模式也决定了 AGS 系统中微生物群落结构的差异。
SMX 激活的 AGS 比没有 SMX 的 AGS 表现更好。
本研究可以帮助工程师确定 AGS 工艺中各种抗生素的启动模式，并为优化水处理工艺提供参考。
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