Pollutant Loading of Different Particle Size Fractions Compared to the Pollutant Loads of Urban Stormwater Runoff Events

Abstract

A stormwater monitoring campaign at a treatment facility is undertaken to further investigate the relationship of TSS removal and the reduction of micropollutant loads. Therefore the particle characteristics are investigated as well as the associated pollutants within different particle size fractions. First results in terms of pollutant loadings are used to calculate the respective PAH loads of the sampled rain events. Furthermore on the basis of the current monitoring campaign, TSS data of a preliminary investigation is used to also calculate the pollutant loads of this time period. The comparison reveals, that a difference between the two monitoring campaigns can be seen. In a next step, the loadings of different substances (flame retardants, plasticisers, pesticides) will be evaluated in the same way.