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Characterization of road runoff with regard to seasonal variations, particle size distribution and the correlation of fine particles and pollutants

  • Urban runoff is known to transport a significant pollutant load consisting of e.g. heavy metals, salts and hydrocarbons. Interactions between solid and dissolved compounds, proper understanding of particle size distribution, dissolved pollutant fractions and seasonal variations is crucial for the selection and development of appropriate road runoff treatment devices. Road runoff at an arterial road in Augsburg, Germany, has been studied for 3.5 years. A strong seasonal variation was observed, with increased heavy metal concentrations with doubled and tripled median concentrations for heavy metals during the cold season. Correlation analysis showed that de-icing salt is not the only factor responsible for increased pollutant concentrations in winter. During the cold period, the fraction of dissolved metals was lower compared to the warm season. In road dust, the highest metal concentrations were measured for fine particles. Metals in road runoff were found to show a significant correlation to fine particles SS63 (<63 μm). Therefore, it is debatable whether treatment devices only implementing sedimentation processes provide sufficient removal rates.

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Author:Rita Hilges, Michael Endres, Astrid Tiffert, E. Brenner, Tanja Marks
Document Type:Article
Date of Publication (online):2018/09/11
Contributing corporation:Hochschule Augsburg
Release Date:2018/09/11
Tag:Abfluss; Enteisung; Fein (mater); Fernverkehrsstrasse; Jahreszeit; Korn; Kornverteilung; Korrelation(Math; Schadstoff; Schwermetall; Stat)
Correlation; Deicing; Fine (mater); Heavy metal; Main road; Particle; Particle size distribution; Pollutant; Run off; Season
Volltext verfügbar unter: DOI 10.2166/wst.2016.576
Source:Water Science & Technology 75 (2017), 5, S. 1169 -1176
Institutes:Abteilung Straßenbautechnik / Abteilung Straßenbautechnik
Sonstige / Sonstige
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 50 Naturwissenschaften / 500 Naturwissenschaften und Mathematik
collections:BASt-Beiträge / ITRD Sachgebiete / 15 Umwelt
BASt-Beiträge / ITRD Sachgebiete / 26 Entwässerung, Frost, Auftauen

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