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Repurposing Dredged Canal Sediment for Topsoil at Bowling, Scotland

Author

Listed:
  • Keith Torrance

    (Department of Civil & Environmental Engineering, University of Strathclyde, Glasgow G1 1XQ, UK)

  • Richard Alastair Lord

    (Department of Civil & Environmental Engineering, University of Strathclyde, Glasgow G1 1XQ, UK)

  • Alasdair Hamilton

    (Scottish Canals, Canal House, Applecross Street, Glasgow G4 9SP, UK)

  • Paul Berry

    (Scottish Canals, Canal House, Applecross Street, Glasgow G4 9SP, UK)

Abstract

The aim of the SURICATES (Sediment Uses as Resources in Circular And Territorial EconomieS) Project is to increase sediment reuse for erosion and flood protection. To investigate potential opportunities to reuse dredged sediments as topsoil following phyto-conditioning, a pilot scale operation was undertaken at Bowling, Scotland. As part of normal maintenance, 550 m 3 of wet sediment was removed from the Forth and Clyde Canal at Old Kilpatrick by Scottish Canals using a hydraulic excavator during September 2020, transported by barge, then transferred to a dewatering cell constructed in an old canal basin by lining with a geotextile break-layer and installing engineered drainage. Following initial dewatering, the sediment was sown with three varieties of grass, which each germinated and survived the winter. By March 2021 composite soil samples already met the BS 3882:2015 criteria for topsoil, other than for Zn levels, which reflected the locally elevated baseline values. This allowed the conditioned sediment to be used immediately as topsoil as part of the nearby construction of a long-distance cycle track following an old railway embankment. Following reuse, replicated validations of six grass or wildflower seed mixtures were sown in April 2021 and monitored to verify longer-term suitability as a landscaping soil.

Suggested Citation

  • Keith Torrance & Richard Alastair Lord & Alasdair Hamilton & Paul Berry, 2023. "Repurposing Dredged Canal Sediment for Topsoil at Bowling, Scotland," Sustainability, MDPI, vol. 15(12), pages 1-12, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:12:p:9261-:d:1166456
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    References listed on IDEAS

    as
    1. Laura Ferrans & Alexander Nilsson & Frank Schmieder & Divya Pal & Mahboubeh Rahmati-Abkenar & Marcia Marques & William Hogland, 2022. "Life Cycle Assessment of Management Scenarios for Dredged Sediments: Environmental Impacts Caused during Landfilling and Soil Conditioning," Sustainability, MDPI, vol. 14(20), pages 1-17, October.
    2. Rachid Hadj Sadok & Walid Maherzi & Mahfoud Benzerzour & Richard Lord & Keith Torrance & Agnes Zambon & Nor-Edine Abriak, 2021. "Mechanical Properties and Microstructure of Low Carbon Binders Manufactured from Calcined Canal Sediments and Ground Granulated Blast Furnace Slag (GGBS)," Sustainability, MDPI, vol. 13(16), pages 1-23, August.
    3. Giancarlo Renella, 2021. "Recycling and Reuse of Sediments in Agriculture: Where Is the Problem?," Sustainability, MDPI, vol. 13(4), pages 1-12, February.
    4. Bruno Lemière & Valérie Laperche & Arjan Wijdeveld & Marco Wensveen & Richard Lord & Alasdair Hamilton & Laurence Haouche & Mathieu Henry & Joe Harrington & Branislav Batel & Pascal Lehette, 2022. "On-Site Analyses as a Decision Support Tool for Dredging and Sustainable Sediment Management," Land, MDPI, vol. 11(2), pages 1-23, February.
    5. Zoë Tieges & Duncan McGregor & Michail Georgiou & Niamh Smith & Josie Saunders & Richard Millar & Gordon Morison & Sebastien Chastin, 2020. "The Impact of Regeneration and Climate Adaptations of Urban Green–Blue Assets on All-Cause Mortality: A 17-Year Longitudinal Study," IJERPH, MDPI, vol. 17(12), pages 1-12, June.
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