Distribution, fate, and risk assessment of antibiotics in five wastewater treatment plants in Shanghai, China.
The project studied the occurrence, fate, and seasonal variation of 14 antibiotics, from five wastewater treatment plants (WWTPs) in Shanghai. The results indicated that ofloxacin, sulfamethoxazole, and oxytetracycline were the predominant antibiotics, with maximum concentrations of 1208.20, 959.13, and 564.30 ng/L in influents, while 916.88, 106.60, and 337.81 ng/L in effluents, respectively. The level of antibiotics in WWTPs obviously varied with seasonal changes, and higher detectable frequencies and concentrations were found in winter. The daily mass loads per capita of amoxicillin, enrofloxacin, and oxytetracycline in the study were all higher than those in other regions/countries, such as Hong Kong, Australia, and Italy. The elimination of antibiotics through these WWTPs was incomplete, and a wide range of removal efficiencies during the different treatment process and seasons were observed (-500.56 to 100 % in winter and -124.24 to 94.21 % in summer). Sulfonamides were relatively easy to be removed in WWTPs and the ultraviolet (UV) process can effectively improve the removal efficiency. Risk assessment of antibiotics in effluents was estimated. Only AMOX's hazard quotient (HQ) was higher than 0.01. Even though the environmental risks in the study were estimated to be low, the potential negative effects on aquatic ecosystems should call our attention as continually discharge in the long term.
School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China.|Shanghai Applied Radiation Institute, Shanghai University, 99 Shangda Road, Shanghai, 200444, China.
Minghong
M
Wu
School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China.
Chenjing
C
Que
School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China.
Liang
L
Tang
School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China.
Hui
H
Xu
School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China.
Jiajia
J
Xiang
School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China.
Jiajun
J
Wang
School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China. wyshi1981@shu.edu.cn.
Wenyan
W
Shi
School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai, 200444, China. xugang@t.shu.edu.cn.|Shanghai Applied Radiation Institute, Shanghai University, 99 Shangda Road, Shanghai, 200444, China. xugang@t.shu.edu.cn.
Gang
G
Xu
D000658:Amoxicillin / Q000032:analysis; D000900:Anti-Bacterial Agents / Q000032:analysis*; D002681:China; D000077422:Enrofloxacin; D004784:Environmental Monitoring; D024841:Fluoroquinolones / Q000032:analysis; D015242:Ofloxacin / Q000032:analysis; D018570:Risk Assessment; D012621:Seasons; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000706:statistics & numerical data*
D000658:Amoxicillin; D000900:Anti-Bacterial Agents; D000077422:Enrofloxacin; D024841:Fluoroquinolones; D015242:Ofloxacin; D062065:Wastewater; D014874:Water Pollutants, Chemical
Antibiotics; Mass load; Removal efficiency; Risk assessment; Wastewater treatment plants (WWTPs)