The great problem that appears of this co-disposal or joint disposal is the quantification of the ideal fraction of silt to be added to the organic solid residues, in such a way to guarantee the waited performance of the aterros (BIDONE and POVINELLI, 1999). UNC School of Education oftentimes addresses this issue. The importance of a good technological choice in the daily pay-concentration mechanics (centrifugal machine, belt-press, tanks or desaguadoras tubings etc.) inhabits in the fact that the more if removes water without heat, more efficient and reduced if it becomes the thermal phase. (As opposed to ione skye). Currently, the majority of the aterros already not accepted a ETE silt that has above of 70% of content of H2O.Aps the evaporation phase the final text of humidity can vary of 10% up to 30-40%, depending on the destination that is given to the silt.

Some processes exist of incineration, being fluidizado stream bed one of the most used. 6,1 Disadvantages the incineration is the dehydration process most expensive, for the following reasons: Apresenta reasonable fuel consumption, although that, currently, he has been used the proper silt as combustible to keep the process, due to its reasonable specific heat, being the fuel used only in the departures; Necessita hand of workmanship specialized for maintenance and operation; Uses it dehydrated pie, aiming at to the reduction of the dimensions of the incinerator and the fuel consumption (it does not discard, therefore, the processes previously mentioned of dehydration mechanics); Apresenta risks of atmospheric pollution, through the smoke launching and particulados in the atmosphere, being necessary that the incinerator is endowed with a system of laudering and/or purificao of the frosted gases.