Sjösediment som resurs
: erfarenheter från olika pilotprojekt

Translated title of the thesis: Lake sediment as a resource: experiences from various projects
  • Anuliina Svensson

Student thesis: Bachelor

Abstract

Eutrophication in a lake occurs due to excess nutrients being released into the lake, namely phosphorous is a problem that deteriorates the environment in the lake and its surroundings. All lakes' conditions should have good status in accordance with the Water Framework Directive; thus, a eutrophic lake must be remedied. Slow flow dredging is a method to salvage the nutritious sediment giving rise to eutrophication. Being that the sediment is nutritious, it could potentially benefit agricultural practices on land, instead of constituting an environmental problem in water. The study has summarised knowledge from five different pilot projects where the dredging method has been used to salvage sediment that in the projects has been used in trials in order to develop some kind of resource. Observations from the projects testify to the fact that there is tentative interest from various sectors for the reuse of the salvaged sediment. The sediments' viscous composition and the fact that it may contain contaminants limits the possibilities for its utilisation. Depending on the area of application different Swedish regulations are to be enforced.

Date of Award2021-Jun-28
Original languageSwedish
SupervisorHenric Djerf (Supervisor) & Lennart Mårtensson (Examiner)

Educational program

  • Environmental Strategist - Soil, Water and Urban Development

University credits

  • 15 HE credits

Swedish Standard Keywords

  • Environmental Sciences (10502)

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