Avaliação da tratabilidade da cama de frango por processos aeróbios de compostagem visando sua reutilização

• Autor(a) principal: Conceição, Priscila Soraia da
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3770
• topic: Frango de corte; Resíduos; Reuso; Tratamento biológico aeróbio; Leira estática aerada; Pilha por reviramento; Broiler; Waste; Reutilization; Aerobic biological treatment; Aerated windrow system; CNPQ::ENGENHARIAS::ENGENHARIA SANITARIA::SANEAMENTO BASICO::RESIDUOS SOLIDOS, DOMESTICOS E INDUSTRIAIS

The reutilization of poultry litter is an alternative way that producers found to deal with the high cost of the materials used to cover the floor on their farms. To reuse this poultry litter, it has to suffer changes on its physical, chemical and biological characteristics, perhaps compromising the process of chicken growth. To make it safe, is required that the producer treats this material; for example reducing the biological load and promoting ammonia to be released. With this present work, as the main focus, it s pursued the evaluation of the composed material as a methodology for treating the poultry litter beyond its reutilization. All the experiments were conducted at Laboratório de Engenharia Sanitária e Ambiental , regarding to the Civil Engineering Department, at Universidade Federal de Viçosa. It was made in four experiments. Experiment 1 was done by assembling a windrow of poultry litter, aerated, with fans cycles. During experiment 2, was compared the efficiency of different methods of composed materials applied at the treatment of the poultry litter in order to reutilize it, using one windrow poultry litter and two overturning cells; was also evaluated its influence on the substratum maker of the poultry litter on this process. On experiment 3, was evaluated the decay of nitrogen, on its normal and ammoniac forms, still using the windrow system. On experiment 4, was possible to determine the amount of volatile ammonia from the process of composed and the treated poultry litter. During the processes, temperature, water contamination, pH, solid contamination, organic carbon contamination, nitrogen and fecal contamination organisms were submitted to tests. The results show that, long cycles of aeration at the windrow system, make it harder to get the composed material done, because it make the material dry faster; the overturning cells show better efficiency reducing the biological load and releasing ammonia when it s compared to the windrow system. Summing up, the composed material obtained from the aerated windrow system, presents good efficiency in order to reduce the total and ammoniac nitrogen from the poultry litter.