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The use of air pollution control residues in landfill covers and for soil stabilization
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.ORCID iD: 0000-0002-1343-2465
2015 (English)Doctoral thesis, comprehensive summary (Other academic)Alternative title
Användning av rökgasreningsrester i deponins sluttäckning och för stabilisering av kontaminerad jord (Swedish)
Abstract [en]

About 66% of all heat energy generated in Sweden originates from the incineration of municipal solid waste and biofuels such as wood, cardboard and peat. In addition to heat energy, incinerators generate about 1.7 Mt of ashes each year, of which 500 000 t are air pollution control (APC) residues. APC residues from municipal solid waste incineration are usually landfilled whereas those from biofuel incinerators are used in roads, as soil fertilizers, and as amendments for stabilizing APC residues classified as hazardous waste. The physico-chemical properties of compacted APC residues are such that they could be viable alternatives to clay in landfill cover liners, and could also replace cement in cases where a solidified structure is desired. However, APC residues are classified as waste and their use may rise concern due to the release of harmful substances into the environment. This thesis examines the environmental impact of APC residues when used together with other waste materials (e.g. sewage sludge, bottom ash, compost) in a landfill cover. In addition, the suitability of APC residues as amendments for stabilizing contaminated soil and their effect on the stability of treated soil under landfill conditions was investigated. The environmental impacts of alternative landfill cover were evaluated by field and laboratory tests that examined two water streams: the landfill cover’s drainage water and its leachate. The drainage water that seeps above the landfill cover liner and is drained away from a landfill cover was contaminated with Cl-, N, TOC and the trace elements As, Cu, Mo, Ni, Se, Pb and Zn. This water stream will need treatment for at least three to four decades. The amounts of landfill cover leachate that percolated through the liner in the field test ranged from 3 to 30 l (m2 y)-1, which was below the legal limit on the leachate flow in non-hazardous waste landfills (

Place, publisher, year, edition, pages
Luleå tekniska universitet, 2015. , p. 42
Series
Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544
National Category
Other Environmental Engineering
Research subject
Waste Science and Technology
Identifiers
URN: urn:nbn:se:ltu:diva-26313Local ID: da3db702-e8bd-450b-9fdb-3d29f27af31aISBN: 978-91-7583-201-2 (print)ISBN: 978-91-7583-202-9 (electronic)OAI: oai:DiVA.org:ltu-26313DiVA: diva2:999475
Note

Godkänd; 2015; 20141215 (igotra); Nedanstående person kommer att disputera för avläggande av teknologie doktorsexamen. Namn: Igor Travar Ämne: Avfallsteknik/Waste Science and Technology Uppsats: The Use of Air Pollution Control Residues in Landfill Covers and for Soil Stabilization Opponent: Dr Richard Beaven, Principal Research Fellow, Faculty of Engineering and the Environment, University of Southampton, United Kingdom Ordförande: Professor Jurate Kumpiene, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet Tid: Fredag den 30 januari 2015 kl. 10.00 Plats: F1031, Luleå tekniska universite

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-24Bibliographically approved

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