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Occurrence and elimination of antibiotics at four sewage treatment plants in the Pearl River Delta (PRD), South China
Xu, WH; Zhang, G; Li, XD; Zou, SC; Li, P; Hu, ZH; Li, J; zhanggan@gig.ac.cn
2007
Source PublicationWATER RESEARCH
ISSN0043-1354
Volume41Issue:19Pages:4526-4534
AbstractIn this paper, the occurrence and elimination of eight selected antibiotics mainly for human use, including chloramphenicol, fluoroquinolone, sulfonamide and macrolide groups, were investigated at four sewage treatment plants (STPs) in the Pearl River Delta (PRD), South China. The most frequently detected antibiotics in the present study were ofloxacin, norfloxacin, roxithromycin, erythromycin- H2O (the main degradation product of erythromycin) and sulfamethoxazole. The concentrations of these compounds in raw influents and final effluents at the four STPs ranged from 10 to 1978 ng L-1 and from 9 to 2054 ng L-1, respectively. The other analytes were detected only in a few samples from the four STPs. Antibiotics could not be eliminated completely at the four STPs, with the highest elimination efficiency reaching to 81%. Analysis of the dissolved daily mass flow showed that fluoroquinolones were mostly eliminated from the sewage, and high concentrations of these compounds were found in secondary sludge. Therefore, it can be concluded that the observed elimination of fluoroquinolones in the STPs was due to their sorption to the sludge, but not biodegradation. Macrolides, especially erythromycin-H2O, were stable in sewage during the treatment process, and in fact even higher concentrations were found in the final effluents than in the raw sewages. Sulfamethoxazole was also found in raw influent and final effluent, indicating that it could withstand different treatment processes in the STPs. Remarkable differences in the daily environmental loads (the sum of the amounts in the final effluent and sludge) of the five most frequently detected antibiotic compounds were found in the range of 0.5-828 g at the four STPs. (C) 2007 Elsevier Ltd. All rights reserved.
DepartmentChinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China; Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China; Zhongshan Univ, Sch Chem & Chem Engn, Guangzhou 510250, Peoples R China; Chinese Acad Sci, S China Sea Inst Oceanol, LED, Guangzhou 510250, Peoples R China
KeywordAntibiotics Wastewater Influent Effluent Sludge Pearl River Delta (Prd) South China
Subject AreaEngineering, Environmental ; Environmental Sciences ; Water Resources
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Indexed Bysci
Funding ProjectLED
WOS IDWOS:000250960600025
Citation statistics
Cited Times:372[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/5849
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorzhanggan@gig.ac.cn
Recommended Citation
GB/T 7714
Xu, WH,Zhang, G,Li, XD,et al. Occurrence and elimination of antibiotics at four sewage treatment plants in the Pearl River Delta (PRD), South China[J]. WATER RESEARCH,2007,41(19):4526-4534.
APA Xu, WH.,Zhang, G.,Li, XD.,Zou, SC.,Li, P.,...&zhanggan@gig.ac.cn.(2007).Occurrence and elimination of antibiotics at four sewage treatment plants in the Pearl River Delta (PRD), South China.WATER RESEARCH,41(19),4526-4534.
MLA Xu, WH,et al."Occurrence and elimination of antibiotics at four sewage treatment plants in the Pearl River Delta (PRD), South China".WATER RESEARCH 41.19(2007):4526-4534.
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