In the general context of sustainable development and ecological concerns, Aperam, a stainless steel producer of world-wide reputation (plants in France, Belgium and Brazil), committed itself not to landfill waste anymore by the end of 2020. The production of stainless steels currently implies the use of acids in the several surface treatments undergone by the alloy. This induces the formation of sludges and degraded baths which are simply neutralized and landfilled because of the lack of efficient and cost effective way to revalorize them. It is often seen that the main obstacles to the treatment of these sludges are their content of F and S coming from the acids and other surface treatment baths used.
Written by Gilen Oyharcabal
Date of update July 19, 2017