Elimination of β-blockers in sewage treatment plants
Elimination of β-blockers in sewage treatment plants
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DOI：
10.1016/j.watres.2007.01.004
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发表时间：
2007-04-01
期刊：
影响因子：
12.8
通讯作者：
Alder, A. C.
中科院分区：
文献类型：
--
作者：
Maurer, M.;Escher, B. I.;Alder, A. C.
β-受体阻滞剂被用来治疗高血压和心脏病发作后的恢复期。在几项研究中，在地表水中检测到这些物质，从而表明这些物质在污水处理厂(STP)中不能完全降解。本研究测定了4种β-受体阻滞剂索他洛尔、阿替洛尔、美托洛尔和心得安在城市污水处理厂污泥中的吸附系数(K-D)和降解速率。吸附系数(K-D，括号内标准差)分别为0.04(+/-0.03s)、0.04(+/-0.033)、0.00(+/-0.023)和0.32(+/-0.058)L g(化学需氧量)(-1)，索他洛尔、阿替洛尔、美托洛尔和心得安的拟一级降解速率常数分别为0.29(+/-0.02)、0.69(+/-0.05)、0.58(+/-0.05)和0.39(+/-0.07)g(COD)(-1)。这些数值转化为典型的STP(污泥浓度为4g(COD)L-1，水力停留时间为6h)25%、37%、44%和50%。美托洛尔和阿替洛尔，这些结果也被两个市政STP的阿替洛尔、索他洛尔和心得安的测量所证实。美托洛尔的估计消除量略高。(C)2007爱思唯尔有限公司。保留所有权利。
beta-Blockers are used to treat high blood pressure as well as patients recovering from heart attacks. In several studies, they were detected in surface water, thus indicating incomplete degradability of these substances in sewage treatment plants (STPs). In this study, we determined the sorption coefficients (K-D) and degradation rates of the four beta-blockers sotalol, atenolol, metoprolol and propranolol in sludge from an STP operating with municipal wastewater.The sorption coefficients (K-D, standard deviations in brackets) were determined as 0.04(+/- 0.03S), 0.04(+/- 0.033), 0.00(+/- 0.023) and 0.32(+/- 0.058) L g(COD)(-1), and the pseudo-first-order degradation rate constants were estimated to be 0.29(+/- 0.02), 0.69(+/- 0.05), 0.58(+/- 0.05) and 0.39(+/- 0.07) L d(-1) g(COD)(-1) for sotalol, atenolol, metoprolol and propranolol, respectively.These values translate into a typical elimination in STPs (sludge concentrations of 4 g(COD) L-1 and a hydraulic retention time of 6h) of 25%, 37%, 44% and 50% for sotalol, propranolol, metoprolol and atenolol, respectively These results are also confirmed by measurements in two municipal STPs for atenolol, sotalol and propranolol. The estimated eliminations are slightly too high for metoprolol. (c) 2007 Elsevier Ltd. All rights reserved.