Innovative treatment trains of bottom ash (BA) from municipal solid waste incineration (MSWI) in Germany.
The industrial sector of bottom ash (BA) treatment from municipal solid waste incineration (MSWI) in Germany is currently changing. In order to increase the recovery rates of metals or to achieve a higher quality of mineral aggregates derived from BA, new procedures have been either implemented to existing plants or completely new treatment plants have been built recently. Three treatment trains, which are designated as entire sequences of selected processing techniques of BA, are introduced and compared. One treatment train is mainly characterized by usage of a high speed rotation accelerator whereas another is operating completely without crushing. In the third treatment train the BA is processed wet directly after incineration. The consequences for recovered metal fractions and the constitution of remaining mineral aggregates are discussed in the context of legislative and economical frameworks. Today the recycling or disposal options of mineral residues still have a high influence on the configuration and the operation mode of the treatment trains of BA despite of the high value of recovered metals.
Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany. Electronic address: olaf.holm@bam.de.
Olaf
O
Holm
Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany.
Franz-Georg
FG
Simon
D060729:Coal Ash / Q000032:analysis*; D005858:Germany; D006863:Hydrogen-Ion Concentration; D017745:Incineration; D008280:Magnetics; D008670:Metals / Q000032:analysis / Q000737:chemistry; D059027:Recycling; D012037:Refuse Disposal / Q000295:instrumentation / Q000379:methods*; D062611:Solid Waste / Q000032:analysis*
D060729:Coal Ash; D008670:Metals; D062611:Solid Waste
Bottom ash (BA); Ferrous metals; Mineral aggregates; Municipal solid waste incineration (MSWI); Non-ferrous metals (NF-metals); Treatment train