Biotic phase micropollutant distribution in horizontal sub-surface flow constructed wetlands

The Science of the Total Environment
Bruce PetrieBarbara Kasprzyk-Hordern

Abstract

The distribution of micropollutants in biotic phases of horizontal sub-surface flow (HSSF) constructed wetlands was investigated. 88 diverse micropollutants (personal care products, pharmaceuticals and illicit drugs) were monitored for in full-scale HSSF steel slag and gravel beds to assess their fate and behaviour during tertiary wastewater treatment. Of the studied micropollutants 54 were found in receiving and treated wastewaters. Treatment reduced concentrations of several micropollutants by >50% (removal range -112% to 98%) and resulted in changes to the stereo-isomeric composition of chiral species. For example, stereo-selective changes were observed for 3,4-methylenedioxymethamphetamine (MDMA) and atenolol during HSSF constructed wetland treatment for the first time. Analysis of sludge present within the HSSF beds found 37 micropollutants to be present. However, concentrations for the majority of these micropollutants were not considered high enough to suggest partitioning into sludge was a contributing mechanism of removal. Nevertheless the preservative methylparaben was found at 2772mgbed-1. Its daily removal from wastewater of 3.4mgd-1 indicates partitioning and accumulation in sludge contributes to its removal. Other...Continue Reading

Citations

Sep 19, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Umesh GhimireVeera Gnaneswar Gude
May 6, 2020·International Journal of Environmental Research and Public Health·Huma Ilyas, Eric D van Hullebusch
Feb 8, 2021·Journal of Hazardous Materials·Cristina ÁvilaCristina Postigo
Feb 18, 2021·Environmental Science and Pollution Research International·Jocelina Paranhos Rosa De VargasJérôme Labanowski
Mar 12, 2020·Environmental Science and Pollution Research International·Huma Ilyas, Eric D van Hullebusch
May 10, 2021·The Science of the Total Environment·N A SabriA A M Langenhoff
Jun 12, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·H IlyasE D van Hullebusch

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