PROCESS FOR INORING AND VALORIZING REFIOMS AND OTHER SPECIAL ANALOGUE INDUSTRIAL WASTE

摘要

The invention relates to a method and an installation for the treatment in an aqueous medium of special waste (1) containing heavy metals and salts, according to which the waste (1) is supplied in divided form. A test determining the calcium chloride (CaCl) content of the waste (1) is carried out and, when the result of the test shows a CaCl 2 content which is less than or equal to a given reference value, a high temperature heat treatment is carried out (3). ) of the waste. In the opposite case, the waste is prewashed to reduce the CaCl 2 content. The cooled waste is then subjected to a maturation step (17), and a matured solid fraction (33) is collected and subjected to repetitive washing operations (35) until the solid fraction (43) meets the requirements of non-harmfulness to the environment.