A treatment process for reducing the mineral nitrogen content of sulfuric acid solutions.

摘要

The invention relates to a treatment method for reducing the inorganic nitrogen content of a residual solution of sulfuric acid, comprising adding to said solution a mono- or polyhydroxylated organic alcohol with a C3 hydrocarbon chain. C8, so as to reduce all or part of the nitrogenous mineral residual substances, solubilized in the sulfuric acid solution, said method being characterized in that the reduction is carried out without external heat input.