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Removal of Endocrine Disrupting Chemicals in HSF and VF pilot-scale constructed wetlands

机译：去除HSF和VF中试规模人工湿地中的内分泌干扰化学物质

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During the last decade, several emerging chemicals, also referred as Endocrine Disrupting Chemicals (EDCs), have raised the interest of the scientific community, because of possible adverse effects on the environment and the living organisms. Although several treatment technologies have been applied for their removal, operation and maintenance costs are prohibitive. Therefore, this study aims to study the treatment of EDCs with an alternative and environmentally friendly technology: constructed wetlands (CWs). For this purpose, 6 pilot-scale CW units of two types, horizontal subsurface flow (HSF) and vertical flow (VF), were used for the treatment of municipal wastewater originating from a university campus, targeting the removal of five EDCs: Bisphenol A (BPA), Nonylphenol (NP), Nonylphenol monoethoxylate (NP1EO), Nonylphenol diethoxylate (NP2EO) and Triclosan (TCS). Results showed that the median removal performance in HSF-R was 49.6%, 51.4% and 48.4%, in HSF-C was 50.0%, 99.0% and 66.0%, and in HSF-Z was 55.4%, 98.9% and 80.3% for BPA, NP1EO and NP2EO, respectively. NP was not removed but its concentration was increased by 48.0%, 43.7% and 51.9% in the HSF-R, HSF-C and HSF-Z, respectively. TCS was not detected in influent wastewater. In the VF-CWs, the median removal efficiencies were: 45.6%, 12.5%, 41.5% and 72.2% in VF-R, 60.0%, 96.2%, 99.0% and 99.8% in VF-C, and 59.0%, 95.6%, 98.7% and 99.8% in VF-Z for BPA, NP, NP1EO, NP2EO, respectively. The study indicates that the main removal pathways of the target EDCs is their biodegradation under aerobic or/and anaerobic conditions and adsorption onto the organic matter retained in the substrate. (C) 2016 Elsevier B.V. All rights reserved.
机译：在过去的十年中，由于可能对环境和生物造成不利影响，几种新兴化学物质（也称为内分泌干扰化学物质（EDC））引起了科学界的关注。尽管已经应用了几种处理技术来去除它们，但是操作和维护成本是高昂的。因此，本研究旨在研究使用替代性和环保技术：人工湿地（CW）来处理EDC。为此，使用了6种中试规模的连续水装置，水平地下流量（HSF）和垂直地下流量（VF）两种类型，用于处理来自大学校园的市政废水，目标是去除五个EDC：双酚A （BPA），壬基酚（NP），壬基酚单乙氧基化物（NP1EO），壬基酚二乙氧基化物（NP2EO）和三氯生（TCS）。结果显示，HSF-R的中位去除性能分别为49.6％，51.4％和48.4％，HSF-C的中位去除性能分别为50.0％，99.0％和66.0％，HSF-Z的中位去除性能分别为55.4％，98.9％和80.3％。 BPA，NP1EO和NP2EO。在HSF-R，HSF-C和HSF-Z中，没有除去NP，但其浓度分别增加了48.0％，43.7％和51.9％。在进水废水中未检测到TCS。在VF-CW中，VF-R的中值去除效率为：45.6％，12.5％，41.5％和72.2％，VF-C中的60.0％，96.2％，99.0％和99.8％，以及59.0％，95.6％在VF-Z中，BPA，NP，NP1EO和NP2EO分别为98.7％和99.8％。研究表明，目标EDC的主要去除途径是它们在好氧或厌氧条件下的生物降解以及吸附在基质中保留的有机物上的能力。 （C）2016 Elsevier B.V.保留所有权利。

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