期刊
CHEMOSPHERE
卷 197, 期 -, 页码 420-429出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2018.01.067
关键词
Antibiotic resistance genes (ARGs); Anoxic/oxic-membrane bioreactor (A/O-MBR); Bacterial community; Antibiotics; Membrane module
资金
- State Key Lab of Urban Water Resource and Environment at Harbin Institute of Technology [2015TS04]
- Major Science and Technology Program for Water Pollution Control and Treatlsment [2014ZX07305001-005]
- Natural Scientific Research Innovation Foundation in Harbin Institute of Technology [HIT.NSRIF.2013110]
A lab-scale anoxic/oxic-membrane bioreactor was designed to treat antibiotics containing wastewater at different antibiotics concentrations (0.5 mg/L, 1 mg/L and 3 mg/L of each antibiotic). Overall COD and NH4+-N removal (more than 90%) were not affected during the exposure to antibiotics and good TN removal was also achieved, while TP removal was significantly affected. The maximum removal efficiency of penicillin and chlorotetracycline reached 97.15% and 96.10% respectively due to strong hydrolysis, and sulfamethoxazole reached 90.07% by biodegradation. However, 63.87% of norfioxacin maximum removal efficiency was achieved mainly by sorption. The system had good ability to reduce ARGs, peaking to more than 4 orders of magnitude, which mainly depended on the biomass retaining of the membrane module. Antibiotics concentration influenced the evolution of ARGs and bacterial communities in the reactor. This research provides great implication to reduce ARGs and antibiotics in antibiotics containing wastewater using A/O-MBR. (C) 2018 Elsevier Ltd. All rights reserved.
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