Investigation on the fate of quinolone antibiotics in three drinking water treatment plants of China
Quinolone (QN) antibiotics are widely used all over the world and have been frequently detected in source water, but the occurrence in tap water and the treatment efficiencies of QNs by drinking-water treatment plants (DWTPs) were rarely reported. In the present study, the occurrence and distributio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-01-01
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| Series: | Water Supply |
| Subjects: | |
| Online Access: | http://ws.iwaponline.com/content/22/1/170 |
| _version_ | 1828490613618638848 |
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| author | Zhiquan Liu Yongpeng Xu Yuan Wang Fuyi Cui |
| author_facet | Zhiquan Liu Yongpeng Xu Yuan Wang Fuyi Cui |
| author_sort | Zhiquan Liu |
| collection | DOAJ |
| description | Quinolone (QN) antibiotics are widely used all over the world and have been frequently detected in source water, but the occurrence in tap water and the treatment efficiencies of QNs by drinking-water treatment plants (DWTPs) were rarely reported. In the present study, the occurrence and distribution of six representative QNs in three urban DWTPs of China were investigated. The results showed that the concentrations of total QNs in the three source waters ranged from 26.4 ng/L to 313.8 ng/L and all of the six QNs were detectable with a detection frequency of 100% (4.6 to 121.7 ng/L). Enrofloxacin (ENR) and ofloxacin (OFL) were the dominant species of QNs and accounted for 40.1% to 79.5% of the total QNs. After the treatments, there were still considerable QNs in the finished water (total amounts of 74.9 ng/L to 148.4 ng/L). The adsorbed QNs could be readily treated with the removal of turbidity by DWTPs, but only a part of the dissolved QNs (13.6% to 68.5%) can be removed. This implies that the dissolved QNs were more hazardous in the source water. Pre-oxidation and disinfection could remove 15.8 ± 8.3% and 16.9 ± 10.8% of dissolved QNs, respectively, depending on the chemical structure of QNs and the types of oxidant. Chemical oxidation was more efficient than coagulation-sedimentation and filtration for the treatment of dissolved QNs. Ozone-granular activated carbon filtration may fail to remove dissolved QNs in the actual DWTPs, because of the insufficient dosage of oxidant and the competition effect of natural organic matter. HIGHLIGHTS
Investigate the actual treatment efficiencies of QNs in three drinking water treatment plants of China.;
Compare the treatment efficiencies of dissolved and adsorbed QNs by typical water treatment progresses.;
Dissolved QNs are the bottleneck for the management of drinking water security.;
Chemical structure is the essential characteristic for efficient treatment of QNs by oxidation.; |
| first_indexed | 2024-12-11T10:46:37Z |
| format | Article |
| id | doaj.art-e6569ceaf2764dfc92eeb3ff1aa18b90 |
| institution | Directory Open Access Journal |
| issn | 1606-9749 1607-0798 |
| language | English |
| last_indexed | 2024-12-11T10:46:37Z |
| publishDate | 2022-01-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Supply |
| spelling | doaj.art-e6569ceaf2764dfc92eeb3ff1aa18b902022-12-22T01:10:27ZengIWA PublishingWater Supply1606-97491607-07982022-01-0122117018010.2166/ws.2021.284284Investigation on the fate of quinolone antibiotics in three drinking water treatment plants of ChinaZhiquan Liu0Yongpeng Xu1Yuan Wang2Fuyi Cui3 Institute of Environmental Research at Greater Bay; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China School of Environment, Harbin Institute of Technology, Harbin 150090, China China Heilongjiang Urban Planning Surveying Design and Research Institute, 150040 Harbin, China School of Environment and Ecology, Chongqing University, Chongqing, 400044, China Quinolone (QN) antibiotics are widely used all over the world and have been frequently detected in source water, but the occurrence in tap water and the treatment efficiencies of QNs by drinking-water treatment plants (DWTPs) were rarely reported. In the present study, the occurrence and distribution of six representative QNs in three urban DWTPs of China were investigated. The results showed that the concentrations of total QNs in the three source waters ranged from 26.4 ng/L to 313.8 ng/L and all of the six QNs were detectable with a detection frequency of 100% (4.6 to 121.7 ng/L). Enrofloxacin (ENR) and ofloxacin (OFL) were the dominant species of QNs and accounted for 40.1% to 79.5% of the total QNs. After the treatments, there were still considerable QNs in the finished water (total amounts of 74.9 ng/L to 148.4 ng/L). The adsorbed QNs could be readily treated with the removal of turbidity by DWTPs, but only a part of the dissolved QNs (13.6% to 68.5%) can be removed. This implies that the dissolved QNs were more hazardous in the source water. Pre-oxidation and disinfection could remove 15.8 ± 8.3% and 16.9 ± 10.8% of dissolved QNs, respectively, depending on the chemical structure of QNs and the types of oxidant. Chemical oxidation was more efficient than coagulation-sedimentation and filtration for the treatment of dissolved QNs. Ozone-granular activated carbon filtration may fail to remove dissolved QNs in the actual DWTPs, because of the insufficient dosage of oxidant and the competition effect of natural organic matter. HIGHLIGHTS Investigate the actual treatment efficiencies of QNs in three drinking water treatment plants of China.; Compare the treatment efficiencies of dissolved and adsorbed QNs by typical water treatment progresses.; Dissolved QNs are the bottleneck for the management of drinking water security.; Chemical structure is the essential characteristic for efficient treatment of QNs by oxidation.;http://ws.iwaponline.com/content/22/1/170antibioticsdrinking-water treatmentoccurrence stateoxidationquinolones (qns) |
| spellingShingle | Zhiquan Liu Yongpeng Xu Yuan Wang Fuyi Cui Investigation on the fate of quinolone antibiotics in three drinking water treatment plants of China Water Supply antibiotics drinking-water treatment occurrence state oxidation quinolones (qns) |
| title | Investigation on the fate of quinolone antibiotics in three drinking water treatment plants of China |
| title_full | Investigation on the fate of quinolone antibiotics in three drinking water treatment plants of China |
| title_fullStr | Investigation on the fate of quinolone antibiotics in three drinking water treatment plants of China |
| title_full_unstemmed | Investigation on the fate of quinolone antibiotics in three drinking water treatment plants of China |
| title_short | Investigation on the fate of quinolone antibiotics in three drinking water treatment plants of China |
| title_sort | investigation on the fate of quinolone antibiotics in three drinking water treatment plants of china |
| topic | antibiotics drinking-water treatment occurrence state oxidation quinolones (qns) |
| url | http://ws.iwaponline.com/content/22/1/170 |
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