Acid Fly Ash Washing (FAW)
The FLUWA is a wet flue gas treatment, enables recycling of heavy metals and minimizes the landfill volume.
Acid filter and fly ash washing (FAW)
Acidic filter and fly ash washing (FAW) forms the core of the AIK systems. In this process, zinc, copper, cadmium, lead and other metals are efficiently removed from the filter and fly ash in the extraction process after mercury separation in the acidic laundry wastewater. For the best economic and ecological utilisation, the FAW process exploits the synergies of the filter ash and laundry wastewater residues produced during wet flue gas cleaning. The result is secondary raw materials. After treatment, the remaining fly ash can be disposed of together with the slag in an environmentally friendly manner and without any problems at a landfill site.
Currently, the FAW process is used to treat more than 50% of the filter ash load generated throughout Switzerland. According to the motto “recycling before landfilling”, the FAW process enables the recycling of heavy metals and minimises the amount of residue to be landfilled.
Currently, the FAW process is used to treat more than 50% of the filter ash load generated throughout Switzerland. According to the motto “recycling before landfilling”, the FAW process enables the recycling of heavy metals and minimises the amount of residue to be landfilled.
Downloads
The impressive technology behind the FLUWA using the ERZ as an example
Recovery of valuable metals from filter ash
To the references
FAW and WWT for waste inceneration
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