METHOD OF OXIDATION, BY WET METHOD, OF EFFLUENTS HEATED ESSENTIALLY BY SPONTANEOUS COMBUSTIBILITY, AND THE CORRESPONDING INSTALLATION

摘要

The invention concerns a method for aqueous phase oxidation of effluents which consists in subjecting said effluents to oxidation in the presence of at least one oxidizing agent, at a temperature ranging between about 20°C and about 350°C, under pressure ranging between about 1 bar and about 160 bar, so as to mineralize part of the organic matter and in oxidizing total ammonia nitrogen contained in said effluents, said oxidation being performed inside a phase-separated reactor wherein a gas phase is arranged above the liquid phase constituted by the effluents, said method including at least one step of heating said effluents. The invention is characterized in that said heating step is essentially performed inside said reactor by the heat of the reaction oxidizing the organic matter, said heating step being preceded by a step of concentrating said effluents.