Relation between settlements and pre-treatment for MSW from laboratory tests.

This paper focuses on the bio-mechanical analysis of the waste behaviour, based on the results of laboratory tests carried out by means of bio-reactors. For this purpose an original waste and the same waste after pre-treatment were used. The experiments were carried out using two parallel reactor cells, one at the laboratory of Environmental Engineering of the University of Padua (Italy) and the other at the LTHE laboratory of the University of Grenoble (France). These tests allowed highlighting the dependence of bio-mechanical parameters on the initial state of the waste. The main result is that a slight aerobic pre-treatment is able in reducing the remaining time of biodegradation of the organic matter. As a consequence, both the amplitude and the time to fully ripening the landfill settlements also reduce.