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Removal of pharmaceuticals from a WWTP secondary effluent by ultrafiltration/reverse osmosis followed by electrochemical oxidation of the RO concentrate

Abstract: This study aims to assess the removal of emerging contaminants from municipal wastewaters using a pilot system that integrated ultrafiltration (UF), reverse osmosis (RO), and electrooxidation, which mineralized the RO concentrate. Initially, the study monitored 77 emerging contaminants in the influent and effluent of a wastewater treatment plant (WWTP). Most of the compounds were detected in significant amounts in the WWTP effluent. A group of 12 compounds that represent the most prevalent therapeutic pharmaceutical categories was selected to monitor their removal by UF/RO. For the majority of the micropollutants, the UF removal efficiency was less than 20%. Excellent removal efficiencies were achieved with the RO treatment. As a result, the concentrations of the emerging contaminants in the RO permeate varied between 44 ng/L for naproxen and 4 ng/L for ofloxacin, and furosemide, bezafibrate and fenofibric acid were not detected. After the RO treatment, electrooxidation of the RO concentrate with boron-doped diamond electrodes reduced the total micropollutant content in the RO concentrate from 149 ug/L to less than 10 ug/L. Increasing the intensity of the electrooxidation treatment is expected to further reduce the micropollutant concentrations.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Urtiaga A., Pérez G., Ibáñez R., Ortiz I.,

 Fuente: Desalination, 2013, 331, 26-34

Editorial: Elsevier

 Fecha de publicación: 16/12/2013

Nº de páginas: 9

Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.desal.2013.10.010

ISSN: 0011-9164

Proyecto español: CTQ2008-0690 ; 062/SGTB/2007/3.1 ; CSD2006-44

Url de la publicación: https://doi.org/10.1016/j.desal.2013.10.010