ANALYSIS OF THE EVOLUTION OF THE PHENOMENON OF CLOGGING OF THE LAYERS OF THE MIXING OF GRAVEL IN A CENTER OF STORAGE OF THE HOUSEHOLD WASTE (CSHW)

We studied the clogging in the granular layers of drainage formed with the mixing of gravel (rounded and crushed) by leachate from the percolation of solid household waste with clogging index. A series of curves of the clogging index have been plotted according to the constitution of the layer of gravel beginning with one of the curve obtain with the entirely rounded gravel and another with the entirely crushed gravel and the rest from a progressive mixtures of particles of crushed gravel in rounded one. Also we established a relation between the void index or porosity in function of the percentage mixing of rounded gravel and crushed gravel in the various granular layers for drainage. Thereafter a relation between the clogging index, the porosity or void index and the drainage layers according to the percentage mixing of gravel rounded and crushed were plotted. The study on the clogging index allowed us to observe a pattern of the curves depending on the nature of the gravel having identical appearance and some mingled. It is therefore apparent that the sample with 40% of the rounded gravel clogged faster than the others. But what we noted is that the clogging index does not change significantly according to the different types of layers and approaches the results of Blond 2012. Also these results showed us that rationalize management of the gravel can serve as a level to take environmental phenomena in consideration when constructing or exploiting the Center of Storage of the Household Waste (CSHW)