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Evaluation of properties of fly ash stabilzed sewage sludge (FSS) as liner on landfills
Swedish Geotechnical Institute.
Swedish Geotechnical Institute.
2012 (English)In: WASCON 2012 - Towards Effective, Durable and Sustainable Production and Use of Alternative Materials in Construction: Proceedings of the 8th International Conference on Sustainable Management of Waste and Recycled Materials in Construction / [ed] Arm, M, Vandecasteele, C, Heynen, J, Suer, P, Lind, B, Linköping: ISCOWA , 2012, p. 1-4Conference paper, Published paper (Refereed)
Abstract [en]

Several Swedish waste sites will be closed during the next decade and will therefore be covered in order to minimize leachate formation and protect the drainage water quality. Fly ash stabilized sewage sludge (FSS) is used on several landfills as liner, sometimes with an overlying geomembrane. The aim of the project was to investigate how FSS fulfills liner requirements on landfills with non-hazardous waste. Geotechnical and chemical parameters were investigated to determine permeability, drainage water quality and durability. Percolation through the FSS liner is less than 15 l/(m2 x year), well below the demands for landfills for non-hazardous waste. Typical compression for the FSS material is 30-35 %, most of which takes place during the first 6-8 month after installation. Drainage water collected at sites with a separating layer between FSS and the drainage layer have high initial levels of nitrogen, metals, DOC, pH and EC. However, levels decrease within a few months. There is a strong correlation between compression of FSS and high initial contents in the drainage water. Laboratory and field results during a period of 6.5 years indicate that the function of FSS as low-permeable layer improves with time. These findings can lead to an increased use of FSS as liner on non-hazardous waste landfills.

Place, publisher, year, edition, pages
Linköping: ISCOWA , 2012. p. 1-4
Keywords [en]
Sewage sludge, Fly ash, Stabilization, Liner, Permeability, Leakage, Deterioration, Time factor, Cover, Landfill, Disposal, Case history, Sweden, Conference, Göteborg, 2012, English
National Category
Earth and Related Environmental Sciences Geotechnical Engineering
Identifiers
URN: urn:nbn:se:swedgeo:diva-879Local ID: 000076331OAI: oai:DiVA.org:swedgeo-879DiVA, id: diva2:1365878
Conference
8th International Conference on Sustainable Management of Waste and Recycled Materials in Construction
Available from: 2019-10-25 Created: 2019-10-25 Last updated: 2019-10-25

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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  • text
  • asciidoc
  • rtf