| 摘要 |
<p>Solid residues arising in flue gas purification, in particular fly dusts, are disposed of in an environmentally sound and economical manner. The heavy metals are extracted from the residues. The heavy metals are precipitated from the extract and the precipitate is separated from the mother liquor. The heavy metal-containing precipitate is subjected to a mechanical stress. The water contained in the precipitate is thus released and the precipitate itself is suspended. The re-suspended heavy metal-containing precipitate and/or the extracted residues are each treated, separately from one another, with a hydraulic binder. Using the binder-containing mixture, mouldings can be formed which, after hardening, are used for erecting partitions in a landfill. Additionally or alternatively, the still plastic binder-containing mixture can be introduced in layers into preformed landfill spaces, where it then hardens.</p> |
