Temporal dynamics of antibiotics in wastewater treatment plant influent
Temporal dynamics of antibiotics in wastewater treatment plant influent
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DOI：
10.1016/j.scitotenv.2013.04.017
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发表时间：
2013-08-01
影响因子：
9.8
通讯作者：
Barry, D. A.
中科院分区：
文献类型：
--
作者：
Coutu, Sylvain;Wyrsch, V.;Barry, D. A.
进行了为期一年的现场实验活动，以揭示时间尺度上的抗生素通量变化的污水处理厂（WTP）的进水。特别是，进行了采样，以确定几种抗生素的每月，每日和每小时波动的幅度。在瑞士洛桑的一个污水处理厂的入口处收集了总共180个样本。将样品浓度乘以流速，以获得六种抗生素（甲氧苄啶、诺氟沙星、环丙沙星、氧氟沙星、克林霉素和甲硝唑）的月、日和小时质量通量。所有物质的质量通量都具有季节性，冬季的最大值比夏季高出一个数量级。抗生素的质量通量的每小时测量被发现具有12小时的周期。这是由于早上和傍晚的厕所使用高峰。特别是，早晨的潮红高峰与尿液中物质过夜积累造成的高浓度（因此也是高质量通量）相吻合。然而，观察到的平均日通量变化不大。因此，抗生素质量通量的波动主要在月和小时时间尺度上明显，在日-周时间尺度上变化不大。这些结果可以帮助优化去除策略和未来的采样活动集中在废水中的抗生素。(C)2013爱思唯尔有限公司版权所有。
A yearlong field experimental campaign was conducted to reveal time scales over which antibiotic fluxes vary in the influent of a wastewater treatment plant (WTP). In particular, sampling was carried out to ascertain the amplitudes of monthly, daily and hourly fluctuations of several antibiotics. A total of 180 samples was collected at the entrance of a WTP in Lausanne, Switzerland. Sample concentrations were multiplied by flow rate to obtain monthly, daily and hourly mass fluxes of six antibiotics (trimethoprim, norfloxacin, ciprofloxacin, ofloxacin, clindamycin and metronidazole). Seasonality in mass fluxes was observed for all substances, with maximum values in winter being up to an order of magnitude higher than in summer. The hourly measurements of the mass flux of antibiotics were found to have a period of 12 h. This was due to peaks in toilet use in the morning and early evening. In particular, the morning peak in flushing coincided with high concentrations (and hence high mass fluxes) due to overnight accumulation of substances in urine. However, little variation was observed in the average daily flux. Consequently, fluctuations in mass fluxes of antibiotics were mainly evident at the monthly and hourly time scales, with little variation on the day-week time scale. These results can aid in optimizing removal strategies and future sampling campaigns focused on antibiotics in wastewater. (C) 2013 Elsevier B.V. All rights reserved.