Elaboración de menús para encapsulamiento de residuos peligrosos para la empresa Hazwat.

Abstract

The purpose of this project was to evaluate the effectiveness of the use of hazardous wastes from the Hazwat remediation center in the encapsulation of paving stones. Field visits were made to the company, from which information was obtained for the proposal of a menu with hazardous wastes for encapsulation, these being incineration ashes, sludge and activated carbon. The physical characterization of the wastes was carried out in the LEMSUR laboratory (FICA). Subsequently, the pavers were made with dosages of 10, 15 and 20 % of waste, and then went through the setting stage for 14 days. Next, absorption and resistance tests were carried out at the LEMSUR (FICA) laboratory, and with the dosages that complied with INEN 1688, they were subjected to leaching tests for the determination of heavy metals at the CICAM laboratory. As a result, the best dosage was 20% with an average resistance of 20 Mpa for pedestrian traffic and an absorption of 9.9%. As for the determination of heavy metals in the leachates, none exceeded the maximum permissible limits of EPA 1311 and Tulsma Book VI Annex 1, Table 9. Finally, a technical report was prepared with the results obtained in order to provide basic information for future encapsulation studies with the hazardous wastes used.