Encontro de Energia no Meio Rural
Agrener

Abstract

Angonese André Ricardo, Campos Alessandro Torres. Uso de energia em unidade suinícola em sistema de terminação com tratamento de resíduos. In: Proceedings of the 6. Encontro de Energia no Meio Rural [Proceedings online]; 2006  June 06-08; Campinas, SP, Brazil. 2006 [cited 2024 Oct 31]. Available from: URL: http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022006000200048&lng=en&nrm=van .

The purpose of this study was to assess the energy flux and energetic balance related to the swine production and the recycling of residues generated by the system for utilization as organic fertilizers. The experiment was carried out at Vale dos Ipês Farm, located in the city of Ouro Verde do Oeste, in the Western of Paraná State. One finishing phase swine unity containing 600 animals was monitored from January to June 2005. The treatment system is composed by one steel digester with capacity for 50 m³_, one sedimentation tank, one algae tank and one biofertilizer storage tank. The swine barn cleaning is performed by dry scratching on a daily basis. The generated residues flow by gravitation through ducts towards the digester. The duration of the hydraulic retention period was 12 days. In the calculation of energetic efficiency, the energetic component ration is the greatest energetic cost in production system of finishing phase swine, corresponding to 95% from the total direct energy. At the way out of the energy system, the energetic component of swine for slaughtering corresponds to 56.8%. The system fitted into the features of an industrial agroecosystem, importing the majority of the consumed energy in the productive process and exporting more than 56% of the production as swine for slaughtering, while the remaining is used in the property as fertilizer.

Keywords : Análise energética; Biodigestão anaeróbia; sustentabilidade.