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Boosting Pharmaceutical Removal Through Aeration in Constructed Wetlands by Cristina Ávila; María Jesús García-Galán; Enrica Uggetti; Nicola Montemurro; Manuel García-Vara; Sandra Pérez; Joan García; Cristina Postigo is a Environmental Science article available to read on EtoBox.

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This work evaluated the removal efficiency of 13 wastewater-borne pharmaceuticals in a pilot constructed wetland (CW) operated under different aeration strategies (no aeration, intermittent and continuous). Aeration improved the removal of conventional wastewater parameters and the targeted micropollutants, compared to the non-aerated treatment. Reduction of chemical oxygen demand (COD) and total nitrogen (TN) was slightly higher applying intermittent aeration than applying continuous aeration, the opposite was observed for the investigated pharmaceuticals. Seven targeted compounds were found in influent wastewater, and five of them (acetaminophen, diclofenac, ketoprofen, bezafibrate and gemfibrozil) were efficiently removed (> 83%) in the aerated systems. The overall risk of the investigated samples against aquatic ecosystems was moderate, decreasing in the order influent > no aeration > intermittent aeration > continuous aeration, based on the hazard quotient approach. Lorazepam, diclofenac and ketoprofen were the pharmaceuticals that could contribute the most to this potential environmental impact of the CW effluents after discharge. To the authors' knowledge this is the first s

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Author

Cristina Ávila; María Jesús García-Galán; Enrica Uggetti; Nicola Montemurro; Manuel García-Vara; Sandra Pérez; Joan García; Cristina Postigo

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Environmental Science (Physical Sciences)