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

Hilges, Rita ; Endres, Michael ; Tiffert, Astrid ; Brenner, E. ; Marks, Tanja

Originalveröffentlichung: (2017) Water Science & Technology 75 (2017), 5, S. 1169 -1176

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Freie Schlagwörter (Deutsch): Abfluss , Enteisung , Fein (mater) , Jahreszeit , Korn , Kornverteilung , Korrelation(Math, Stat) , Fernverkehrsstrasse , Schadstoff , Schwermetall ,
Freie Schlagwörter (Englisch): Correlation , Deicing , Fine (mater) , Heavy metal , Main road , Particle , Particle size distribution , Pollutant , Run off , Season
Collection 1: BASt-Beiträge / ITRD Sachgebiete / 26 Entwässerung, Frost, Auftauen
Collection 2: BASt-Beiträge / ITRD Sachgebiete / 15 Umwelt
Institut 1: Abteilung Straßenbautechnik
Institut 2: Sonstige
DDC-Sachgruppe: Naturwissenschaften
Sonstige beteiligte Institution: Hochschule Augsburg
Dokumentart: Aufsatz
Sprache: Englisch
Erstellungsjahr: 2017
Publikationsdatum: 11.09.2018
Bemerkung: Volltext verfügbar unter: DOI 10.2166/wst.2016.576
Kurzfassung auf Englisch: 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.