Department Urban Water Management

DIMES II - Diffuse micropollutant emissions from urban areas

A first Swiss-wide assessment of micropollutants in wet-weather discharges indicated that many combined and separate sewer overflows can be critical at a local assessment level.

Mutzner, L.; Staufer, P.; Ort, C. (2016) Model-based screening for critical wet-weather discharges related to micropollutants from urban areas, Water Research, 104, 547-557, doi:10.1016/j.watres.2016.08.003, Institutional Repository

Data for micropollutants in wet-weather discharges is still scarce. Therefore, we aim to monitor and understand the occurrence of micropollutants (e.g. pharmaceuticals, biocides, pesticides) from urban areas by studying selected catchments with defined land uses. We surveyed two sites in the urban water observatory with conventional active water sampling and passive samplers to assess the applicability of passive samplers for rain-event based sampling in sewers.

 

Monitoring of 20 sewer overflows with passive samplers
Mutzner, L.; Vermeirssen, E. L. M.; Mangold, S.; Maurer, M.; Scheidegger, A.; Singer, H.; Booij, K.; Ort, C. (2019) Passive samplers to quantify micropollutants in sewer overflows: accumulation behaviour and field validation for short pollution events, Water Research, 160, 350-360, doi:10.1016/j.watres.2019.04.012, Institutional Repository
Mutzner, L.; Vermeirssen, E. L. M.; Ort, C. (2019) Passive samplers in sewers and rivers with highly fluctuating micropollutant concentrations – Better than we thought, Journal of Hazardous Materials, 361, 312-320, doi:10.1016/j.jhazmat.2018.07.040, Institutional Repository

In 2017, we monitored 20 wet-weather discharge sites across Switzerland with the efficient passive sampler approach. With the collected monitoring data we aim to identify differences between urban catchments and find correlation between land use and micropollutant discharge.