Ferrox®-stabilisation
- A stabilisation process for combustion residues
Managing fly ash and semidry flue gas cleaning residue from waste incineration and other combustion residues in an environmentally safe way is difficult. The Ferrox®-stabilisation is developed to ensure safe handling and disposal of these residues.
The Ferrox®- process as a mean to manage combustion residues
Managing combustion residues are usually associated with high costs and an environmental risk. The Ferrox®-process is developed to manage combustion residues in an environmentally safe way at a low cost. Compared to the costs of a traditional cement stabilisation the Ferrox®-process has advantages in reducing the overall mass of the residue that has to be disposed combined with a good stabilisation.
The Ferrox®-process stabilises the residues, whereby the release of heavy metals and salts are substantially reduced compared to the untreated residues. The process does not yield a new heavy metal polluted waste stream, but immobilises the heavy metals in the residue.The salts are extracted from the residues during the process. The result is a stabilised residue, which is easy to dispose of in an environmentally safe way.
Babcock & Wilcox Vølund A/S has exclusive right to the Ferrox®-process
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An illustration of the leaching process taking place in landfilled residues. Heavy metals are released from untreated APC-residue to the percolating rainwater and thereby spread to the environment, whereas the Ferrox®-stabilisation immobilises the heavy metals in the stabilised residues.
