Blackwater treatment and fate of pharmaceuticals and antibiotic resistance genes

Last changed: 20 March 2019
Schematic of blackwater treatment and fate of pharmaceuticals and antibiotic resistance genes_300x300.png

This Formas project aims at assessing the benefits and possible environmental risks associated with blackwater treatment and use as fertilizer in agricultural fields.

Treatment and use of blackwater (faeces, urine and flush toilet water) offer several advantages, such as the recovery of a nutrient-rich agricultural product and closing of the nutrient loop. Nevertheless, blackwater may contain high levels of pharmaceuticals and active metabolites as well as bacteria carrying antibiotic-resistant genes (ARGs). Therefore, before usage, appropriate treatment and sanitation is needed to avoid the spread of these harmful pollutants in the environment.

This project will evaluate state-of-the-art blackwater treatment techniques, focusing on the removal of pharmaceutical residues and on the reduction of ARGs. We will also conduct field monitoring campaigns on sites where blackwater, manure and sludge have been amended. In the end of the project a theoretical risk assessment study will be carried out. The studies will be used to investigate whether use of blackwater is a significant vector of dissemination of these pollutants in the environment and to assess environmental hazards posed by different agricultural practices.

The outcome of this project will help to guarantee a safe use of this natural resource.

Participants

SLU: Foon Yin Lai, Lutz Ahrens, Karin Wiberg
ICRA, Girona, Spain: Meritxell Gros

Facts:

Funding: Formas.


Contact
Lutz Ahrens, Senior Lecturer
Department of Aquatic Sciences and Assessment, Section for Organic Environmental Chemistry and Ecotoxicology
lutz.ahrens@slu.se, 018-673033, 070-2972245

Karin Wiberg, Professor
Department of Aquatic Sciences and Assessment, Section for Organic Environmental Chemistry and Ecotoxicology
karin.wiberg@slu.se, 018-673115, 070-2341570

Foon Yin Lai, Postdoctor
Department of Aquatic Sciences and Assessment, Section for Organic Environmental Chemistry and Ecotoxicology
foonyin.lai@slu.se, 018-672233

Page editor: simon.hallstan@slu.se