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Title: Thermal treatment of solid residues from WtE units: A review

Highlights: • We review the thermal treatment methods for ashes and residues from WtE plants. • We review the results from extensive laboratory work on vitrification, melting and vaporization of ash. • We analyze the results from the extensive patent literature on thermal treatment. • We review industrial concepts for thermal treatment of ash. - Abstract: Thermal treatment methods of bottom ash, fly ash and various types of APC (air pollution control) residues from waste-to-energy plants can be used to obtain environmentally stable material. The thermal treatment processes are meant to reduce the leachability of harmful residue constituents, destroy toxic organic compounds, reduce residue volume, and produce material suitable for utilization. Fly ash and APC residues often have high levels of soluble salts, particularly chlorides, metals such as cadmium, lead, copper and zinc, and trace levels of organic pollutants such as dioxins and furans. Different thermal treatment methods can be used to either decompose or stabilize harmful elements and compounds in the ash, or separate them from the ash to get a material that can be safely stored or used as products or raw materials. In the present paper, thermal treatment methods, such as sintering, vitrification, and melting have beenmore » reviewed. In addition to a review of the scientific literature, a survey has been made of the extensive patent literature in the field.« less
Authors:
; ;
Publication Date:
OSTI Identifier:
22470214
Resource Type:
Journal Article
Resource Relation:
Journal Name: Waste Management; Journal Volume: 37; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AIR POLLUTION CONTROL; CADMIUM; CHLORIDES; COPPER; DIOXIN; FLY ASH; FURANS; HEAT TREATMENTS; LEAD; POLLUTANTS; RAW MATERIALS; REFUSE-FUELED POWER PLANTS; TOXICITY; VITRIFICATION; ZINC