College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Zhengzhou, 450052, People's Republic of China.
College of Environmental Science and Engineering, Tongji University, Shanghai, People's Republic of China.
Bioprocess Biosyst Eng. 2018 Jan;41(1):47-56. doi: 10.1007/s00449-017-1842-7. Epub 2017 Oct 10.
An anaerobic/aerobic moving-bed biofilm (A/O-MBBR) reactor system was constructed, and the treatment efficiency of aqueous antibiotics in wastewater was investigated. The effects of antibiotics on the microbial communities in the A/O-MBBR were also investigated. Under the optimized reaction conditions, removal of tetracycline antibiotics (TCs) was studied in a series of experiments. When a low concentration of tetracycline (TC) was added to the reactor system, high removal efficiency of conventional pollutants (TC concentration decreased from 10 turn to 2.8 μg L) was achieved. When mixed TCs (50 μg L) were added to the system, the removal efficiencies of chlortetracycline (CTC), TC and oxytetracycline (OTC) reached 52.03, 41.79, and 38.42%, respectively. TC degradation was decreased to 21.16% when the antibiotic concentration was 500 μg L; exposure to this TC concentration destroyed the community structure of the activated sludge bacteria in the reactor. The products of the biodegradation analysis revealed the possible degradation pathways functioning in the experimental A/O-MBBRs.
构建了厌氧/好氧移动床生物膜（A/O-MBBR）反应器系统，研究了废水中水相抗生素的处理效率。还研究了抗生素对 A/O-MBBR 中微生物群落的影响。在优化的反应条件下，研究了一系列实验中四环素抗生素（TCs）的去除情况。当向反应器系统中添加低浓度的四环素（TC）时，常规污染物的去除效率很高（TC 浓度从 10 降至 2.8μg/L）。当向系统中添加混合 TCs（50μg/L）时，氯四环素（CTC）、TC 和土霉素（OTC）的去除率分别达到 52.03%、41.79%和 38.42%。当抗生素浓度为 500μg/L 时，TC 的降解率下降至 21.16%；这种 TC 浓度的暴露破坏了反应器中活性污泥细菌的群落结构。生物降解分析的产物揭示了实验性 A/O-MBBR 中可能起作用的降解途径。
