This example of ISWM efficiency provides some solutions related to the exclusive use of dry processes. But specific characteristics exist in each ISWM plant depending on the entering waste and on the requirements on the final product. Moreover, mesh size of strainers is different for each treatment chain: 12 mm for GISEMENT and 40 mm for METAUFER. Fines resulting of each line are different and need specific sorting process. So, local optimisation of processes has to be done for each ISWM plant.