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Remediation of polluted sediments through deep freezing
FriGeo AB.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-1365-8552
2003 (English)In: Proceedings from the Third International Disposal Conference: Karlskoga, Sweden, 10-11 November, 2003, Linköping: Linköping University Electronic Press, 2003Conference paper, Meeting abstract (Other academic)
Abstract [en]

Artificial ground freezing (AFG) is a well established technique first practised in South Wales in 1862. Since then many different temporary and permanent applications have been developed. AFG is mostly used in tunnels and for stabilising excavations, but there is an increasing interest in using AFG for environmental protection and for using freeze/thaw cycles for remediation of contaminated soil. Freeze dredging is a novel dredging technique developed at Luleå University of Technology in co-operation with industrial partners. The contaminated sediment is first stabilised by freezing, and then the frozen sediment is lifted up above the water with a minimum of disturbance of the surrounding soil. Full-scale field tests have been performed with very good results. It has been hypothesised that underwater freezing can be used also for removal or radioactive material, fragile containers with hazardous content, and ammunition. This paper describes the basic principles of the technology and lessons learned from the full scale tests. It also deals with considerations necessary for designing a system for underwater freezing of different materials.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2003.
National Category
Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-38251Local ID: c96572c0-88e9-11de-8da0-000ea68e967bOAI: oai:DiVA.org:ltu-38251DiVA: diva2:1011750
Conference
International Disposal Conference : 10/11/2003 - 11/11/2003
Note
Godkänd; 2003; 20090814 (svek)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-06-27Bibliographically approved

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