This proposal provides for the in situ cosolideren inorganic sludge, both in landfills or directly in sediment. Treatment should be done without spending the sludge with an injection of additives that either provide better compaction of the sludge or lesser availability of the pollutants leaching (say ecological risk). Dez in situ dewatering sludge makes it less liquid and reduces it to a paste. This has the advantage that greatly increases the stability and the leachability plummet. This project involves the study of the effect of coagulants and flocculants in the mineral matter and the potential to drain excess water. So far the world with a certain 'trial and error' 'is working and understands little of these interactions and behaviors. The project will also experience and knowledge of some partners to join the correct use of these additives, coupled with the development of the most efficient and economically acceptable injection techniques and followed by proper disposal technology of the released water.