Fate of sulfonamides, macrolides, and trimethoprim in different wastewater treatment technologies
Fate of sulfonamides, macrolides, and trimethoprim in different wastewater treatment technologies
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DOI：
10.1016/j.scitotenv.2006.07.039
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发表时间：
2007-01-01
影响因子：
9.8
通讯作者：
Giger, Walter
中科院分区：
文献类型：
--
作者：
Goebel, Anke;McArdell, Christa S.;Giger, Walter
研究了几个城市污水处理厂对原废水中磺胺类、大环内酯类和甲氧苄啶类药物的去除效果。初级处理对所研究的物质没有显著的消除作用。在两个传统的活性污泥（CAS）系统和固定床反应器（FBR）的二级处理中观察到类似的消除。磺胺甲基异恶唑，包括作为N-4-乙酰基-磺胺异恶唑存在的馏分，被消除了约60%，相比之下，在膜生物反应器（MBR）中的固体保留时间（SRT）独立的约80%，表明所观察到的消除有机底物浓度的正相关性。在两个CAS系统和FBR中，大环内酯类和甲氧苄啶的消除在不同的采样活动之间存在显著差异。在MBR中，在SRT为16 +/- 2和33 +/- 3 d时，这些分析物被去除高达50%。甲氧苄氨嘧啶、克拉霉素和脱氢红霉素在60-80 d的SRT下表现出高达90%的较高消除，表明与底物载量（SL）降低相关。与高泥龄一起，SL可能导致活性生物量的生物多样性增加，从而导致更广泛的降解途径。两种研究砂滤器表现出不同的消除行为。其中一种导致大多数大环内酯类（17-23%）和甲氧苄啶（74 +/- 14%）的显著消除，而在研究的其他砂滤器中未观察到消除。(c)2006 Elsevier B. V.保留所有权利。
The elimination of sulfonamides, macrolides and trimethoprim from raw wastewater was investigated in several municipal wastewater treatment plants. Primary treatment provided no significant elimination for the investigated Substances. Similar eliminations were observed in the secondary treatment of two conventional activated sludge (CAS) systems and a fixed-bed reactor (FBR). Sulfamethoxazole, including the fraction present as N-4-acetyl-sulfainethoxazole, was eliminated by approximately 60% in comparison to about 80% in a membrane bioreactor (MBR) independently of the solid retention time (SRT), indicating a positive correlation of the observed elimination to the organic substrate concentration. The elimination for macrolides and trimethoprim varied significantly between the different sampling campaigns in the two CAS systems and in the FBR. In the MBR, these analytes were eliminated up to 50% at SRTof 16 +/- 2 and 33 +/- 3 d. Trimethoprim, clarithromycin and dehydro-erythromycin showed a higher elimination of up to 90% at a SRT of 60-80 d indicating a correlation with reduced substrate loading (SL). Together with the high SRT, the SL may lead to an increased biodiversity of the active biomass, resulting in a broader range of degradation pathways available. Two investigated sand filters showed different elimination behavior. One led to a significant elimination of most macrolides (17-23%) and trimethoprim (74 +/- 14%), while no elimination was observed in the other sand filter investigated. (c) 2006 Elsevier B.V. All rights reserved.