– Denitrification: bacteria for the decontamination of mines wastewater.


Wastewater from the extraction of sulphide ore contains toxic contaminants such as ammonia and thiocyanates. Starting in the year 2000, the water treatment team at Agnico Eagle’s LaRonde complex, together with external researchers, has developed and implemented a wastewater decontamination technology that uses bacteria. Today, at the height of its efficiency, this technology is the most efficient and natural way of treating wastewater. In order to reduce the nitrogen load resulting from this biological treatment, a partial denitrification is now carried out at the same time as the treatment of toxic contaminants, a process that is unique in the world.
This conference will discuss how this technology works, the stages of its development, the development of other potential applications, as well as its numerous positive environmental impacts.