期刊
CANADIAN JOURNAL OF CIVIL ENGINEERING
卷 36, 期 5, 页码 889-894出版社
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/L09-040
关键词
antibiotic-resistant bacteria; E. coli; UV disinfection; chlorine; water treatment; wastewater treatment
This bench-scale study investigated whether strains of Escherichia coli that are resistant to two common types of antibiotics, ampicillin and trimethoprim, possess increased resistance to two common disinfectants in water and wastewater treatment, free chlorine and ultraviolet disinfection, relative to an antibiotic-sensitive strain of E. coli isolated from sewage sludge. Trimethoprim-resistant E. coli was slightly more resistant to chlorine than the antibiotic-sensitive isolate and the ampicillin-resistant E. coli under the study conditions (95% confidence), however this difference would not be important under normal chlorination conditions applied in practice. There were no statistically significant differences between the ultraviolet dose-response profiles of the antibiotic-resistant and antibiotic-sensitive E. coli strains over the ultraviolet dose range tested.
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