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Lookup NU author(s): Tamara Coello Garcia, Professor Thomas CurtisORCiD, Dr Wojciech MrozikORCiD, Professor Russell DavenportORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
Copyright © 2019 Elsevier Ltd. All rights reserved.The removal of β-estradiol (E2) and α-ethinylestradiol (EE2) in biological wastewater treatment plants (WWTP) would need to be improved in order to comply with prospective Environmental Quality Standards (EQS) of 0.4 and 0.035 ng.L-1 respectively. The effluent concentration of a micropollutant in an activated sludge process is a function of the removal rate, the hydraulic retention time (HRT) and the flow pattern, which is usually overlooked. In order to better understand this aspect, we carried out tracer studies in eight WWTPs in the UK and found that relatively modest changes in aeration tanks would translate into tangible improvements in their flow pattern. We further evaluated the degradation rates for E1 (estrone), E2, E3 (estriol) and EE2 in each WWTP and we estimated that the modification of the flow pattern would be sufficient to place effluent concentrations of E2 (23.2 L∙gVSS-1∙d-1
Author(s): Coello-Garcia T, Curtis TP, Mrozik W, Davenport RJ
Publication type: Article
Publication status: Published
Journal: Water research
Year: 2019
Volume: 164
Online publication date: 23/07/2019
Acceptance date: 22/07/2019
Date deposited: 15/10/2019
ISSN (print): 0043-1354
ISSN (electronic): 1879-2448
Publisher: Elsevier
URL: https://doi.org/10.1016/j.watres.2019.114905
DOI: 10.1016/j.watres.2019.114905
PubMed id: 31394465
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