STORMWATER QUALITY ASSOCIATED WITH A FULL SILT TRAP DISCHARGING INTO AN URBAN WATERCOURSE |
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| Authors: | M Scholz Cand Ing BEng PgC MSc PhD ILTM CEng MICE S Zettel Dipl-Ing |
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| Affiliation: | Lecturer, University of Edinburgh, Institute for Infrastructure and Environment, Edinburgh, UK.;Former student, Technische Universität München, München, Germany. |
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| Abstract: | The aim of this project was to assess the influence of a full silt trap on the quality of stormwater which was discharged into an urban watercourse. The average SS concentrations of the outflow were 2.0 and 34.1 mg/l during dry-weather and wet-weather conditions, respectively, and SS concentrations of up to 141.6 mg/l were recorded during storms. Treated stormwater SS concentrations were often high, compared with secondary sewage-treatment standards of ≤30 mg/l. Pollutants accumulated in the silt trap. |
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| Keywords: | Heavy metals sediment-size distribution silt trap stormwater management surface-water runoff urban watercourse |
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