Immobilisation of pollutants in the preparation of briquettes from organic products or waste products such as, for example, domestic refuse, sewage sludge and industrial hazardous waste

摘要

To reduce the emission of pollutants in the thermal treatment (incineration, gasification, pyrolysis) of briquettes of organic products and waste products and to reduce the leachability of the residues, inorganic additives are added in the preparation of the briquettes. With utilisation of exothermic heat of reaction and under pressure, chemical reactions are initiated and accelerated during the pressing step, so that chemical binding of pollutants takes place during pressing and during the pyrolysis and/or incineration to give sparingly soluble minerals, mixed oxides and natural or technical silicates.