| abstract |
The invention relates to a method for conditioning an acid waste by cementation, wherein the acid waste is chosen among liquids of pH less than or equal to 4, semi-liquids of pH less than or equal to 4, solids for which partial or total dissolving in water leads to a solution or a suspension of pH less than or equal to 4, and mixtures thereof, which method comprises the steps of: a) preparing a cement paste having as components at least: a phosphomagnesium cement and the acid waste, and b) curing the cement paste thus obtained, and is characterised in that in step a), the cement paste is prepared without the acid waste having been subjected beforehand to a treatment consisting of lowering its acidity. The invention is applicable for conditioning any acid waste whatever its origin and, more specifically, acid waste produced in the nuclear industry. |