Gestão de chorume de uma exploração pecuária através da co-digestão com resíduos de fruta

Mestrado em Engenharia do Ambiente - Instituto Superior de AgronomiaDue to the increase of animal production throughout the world, also increase the amount of dairy cattle manure and consequently the environmental impacts associated with their inadequate management. One of the treatment techniques more adequate is the anaerobic digestion, which allows obtaining two valorizable products: biogas which can be used as a source of energy and a digested efluent that can be used as agricultural fertilizer. This work aims to study the potential use of a cattle farm effluent on AD. Therefore, it was necessary to collect data relating to the flow analysis and then, make the experimental design according to the needs inherent to this type of farming. For waste treatment from a cattle farming unit for milk production by AD, it was expected that the process had low viability owning the residue characteristics. Therefore it was used an agricultural waste for the process of anaerobic co-digestion. The residue selected as cosubstrate to the mixture of manure / washing waters, was a liquid residue from a surplus harvest of Pear Rocha from the region of Mafra. From the results it can be concluded that the co-digestion of these two residues can contribute to a sustainable management at a farm scale level. We can deduce this since it we proved the viability of the process