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Sediment management in sustainable urban drainage system (SUDS) ponds

Heal, K.V. and Hepburn, D.A. and Lunn, R.J. (2006) Sediment management in sustainable urban drainage system (SUDS) ponds. Water Science and Technology, 53 (10). pp. 219-227. ISSN 0273-1223

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Abstract

Since removal and disposal of sustainable urban drainage system (SUDS) sediment can incur high maintenance costs, assessments of sediment volumes, quality and frequency of removal are required. Sediment depth and quality were surveyed annually from 1999-2003 in three ponds and one wetland in Dunfermline, Scotland, UK. Highest sediment accumulation occurred in Halbeath Pond, in the most developed watershed and with no surface water management train. From comparison of measured potentially toxic metal concentrations (Cd, Cr, Cu, Fe, Ni, Pb, Zn) with standards, the average sediment quality should not impair aquatic ecosystems. 72-84% of the metal flux into the SUDS was estimated to be associated with coarse sediment (>500 μm diameter) suggesting that management of coarse sediment is particularly important at this site. The timing of sediment removal for these SUDS is expected to be determined by loss of storage volume, rather than by accumulation of contaminants. If sediment removal occurs when 25% of the SUDS storage volume has infilled, it would be required after 17 years in Halbeath Pond, but only after 98 years in Linburn Pond (which has upstream detention basins). From the quality measurements, sediment disposal should be acceptable on adjacent land within the boundaries of the SUDS studied.

Item type: Article
ID code: 6838
Keywords: pond, toxic metals, sediment depth, sediment quality, sustainable urban drainage system, wetland, civil engineering, Environmental technology. Sanitary engineering, Engineering (General). Civil engineering (General), Water Science and Technology, Environmental Engineering
Subjects: Technology > Environmental technology. Sanitary engineering
Technology > Engineering (General). Civil engineering (General)
Department: Faculty of Engineering > Civil and Environmental Engineering
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 05 Sep 2008
    Last modified: 04 Sep 2014 17:03
    URI: http://strathprints.strath.ac.uk/id/eprint/6838

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