DOI: 10.1016/j.watres.2017.11.067
Scopus记录号: 2-s2.0-85036641103
论文题名: Robust performance of a membrane bioreactor for removing antibiotic resistance genes exposed to antibiotics: Role of membrane foulants
作者: Zhu Y. ; Wang Y. ; Zhou S. ; Jiang X. ; Ma X. ; Liu C.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 130 起始页码: 139
结束页码: 150
语种: 英语
英文关键词: Antibiotic resistance genes
; Extracellular polymeric substances
; Membrane bioreactor
; Membrane foulants
; Soluble microbial product
Scopus关键词: Activated sludge process
; Antibiotics
; Bioconversion
; Bioreactors
; Effluents
; Genes
; Health risks
; Industrial water treatment
; Membrane fouling
; Polymers
; Surface treatment
; Wastewater treatment
; Antibiotic resistance genes
; Extra-cellular polymeric substances
; Membrane bioreactor
; Membrane foulants
; Soluble microbial products
; Membranes
; antibiotic agent
; bacterial polysaccharide
; bacterial protein
; humic acid
; sulfamethoxazole
; tetracycline
; antiinfective agent
; sulfamethoxazole
; tetracycline
; antibiotic resistance
; biofouling
; bioreactor
; concentration (composition)
; exopolymer
; humic acid
; industrial performance
; membrane
; performance assessment
; pollutant removal
; polysaccharide
; protein
; wastewater
; wastewater treatment
; wastewater treatment plant
; activated sludge
; antibiotic resistance
; Article
; bacterial gene
; biofouling
; controlled study
; ereA gene
; int1 gene
; nonhuman
; priority journal
; quantitative analysis
; sulI gene
; sulII gene
; tetC gene
; antibiotic resistance
; artificial membrane
; bacterial gene
; biofouling
; bioreactor
; drug effect
; genetics
; microbiology
; sewage
; waste water
; Anti-Bacterial Agents
; Biofouling
; Bioreactors
; Drug Resistance, Microbial
; Genes, Bacterial
; Membranes, Artificial
; Sewage
; Sulfamethoxazole
; Tetracycline
; Waste Water
英文摘要: Antibiotic resistance genes (ARGs) are an emerging concern in wastewater treatment plants (WWTPs), as dissemination of ARGs can pose a serious risk to human health. Few studies, however, have quantified ARGs in membrane bioreactors (MBRs), although MBRs have been widely used for both municipal and industrial wastewater treatment. To reveal the capacity of MBRs for removal of ARGs and the response of membrane fouling after antibiotic exposure, five typical ARG subtypes (sulI, sulII, tetC, tetX and ereA) and int1 were quantified affiliated by systematic membrane foulants analysis in a laboratory-scale anoxic/aerobic membrane bioreactor (A/O-MBR). Sulfamethoxazole and tetracycline hydrochloride additions increased ARG abundances by 0.5–1.4 orders of magnitude in the activated sludge, while the ARG removal performance of the membrane module remained stable (or even increased with ARG absolute abundance in several cases), with the abundance of removed ARGs ranging from 0.6 to 5.6 orders of magnitude. Specifically, the distribution of ARGs in membrane foulants accounted for 13%–25% of the total absolute abundance of all tested MBR samples. Indeed, substantial fouling occurred after the antibiotic additions, with the mean concentrations of soluble microbial product (SMP) and extracellular polymeric substance (EPS) increasing by 340% and 220%, respectively, in a membrane fouling cycle; moreover, the contents of EPS and SMP in the membrane foulants were significantly correlated with the ARG absolute abundance of membrane foulants (p < 0.05), among which more significant correlations occurred between both the protein and polysaccharide of foulants than that with humic acid. The dense membrane fouling layer and the membrane itself constituted dual barriers that effectively avoided the leakage of ARGs from the membrane module. Our findings provide fundamental insights into the proliferation and removal of ARGs in MBR systems, and highlight the contribution of membrane fouling to ARG removals in terms of the potential of MBR as an effective strategy to reduce ARG levels in WWTP effluent. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113042
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Siping Road, Shanghai, 200092, China; Shanghai Youlin Zhuyuan Sewage Investment and Development co. ltd, Shanghai, 200125, China
Recommended Citation:
Zhu Y.,Wang Y.,Zhou S.,et al. Robust performance of a membrane bioreactor for removing antibiotic resistance genes exposed to antibiotics: Role of membrane foulants[J]. Water Research,2018-01-01,130