A process for treating and upgrading effluents containing at least one metallic sulphate, this process being characterized in that it comprises steps that consist of: adding a solution of ammonia NH3 to the said effluent to obtain ammonium sulphate (NH4)2SO4 in solution and a precipitation of iron oxy-hydroxides Me...

The present invention relates to an industrial method for effectively removing a PFAS substance, in particular PFAS POPs, comprised in waste, while making it possible to effectively control the HF emissions induced by this removal.