Avaliação do desempenho de um biodgestor canadense modificado no tratamento de dejetos de suínos

Abstract

From the standpoint of economic and social, the pig is an important activity for small and medium farms constituting a tool for keeping people in the field as well as generating direct and indirect jobs throughout the supply chain. Brazil is the only Latin American country that is among the 10 largest producers of pork, accounting for 7.5% of world exports. In the South, is 42.87% of the national herd (CUNHA, 2007). The stabilization of pig manure digesters through has been highlighted, depending on the health aspects as well as the potential in renewable energy generation, besides offering economic conditions of organic and nutrient recycling (RIZZONI, 2012). The data reported in this article was obtained from the sampling in a rural property located within the municipality of São Pedro do Butia. The property is intended for system designated as UPL - piglet production unit, which has approximately 2544 animals, counting lactating females, males and piglets. The unit is divided into sheds "nursery", maternity and pregnancy rooms. The results showed a high dilution of the effluent compared with data reported in literature. It has been estimated residence time of 20.2 days and were observed high removal efficiencies of COD and volatile solids - 72.8 and 56.9%, respectively. With this pre-treatment of the effluent to increase the amount of dissolved solids may be able to increase the overall speed of processing in the digester.