Co-digestão de resíduos de incubatório de aves e águas residuárias agroindustriais

• Ano de defesa: 2011
• Autor(a) principal: Matter, Juliana Maria
• Orientador(a): Costa, Mônica Sarolli Silva de Mendonça
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual do Oeste do Parana
• Programa de Pós-Graduação: Programa de Pós-Graduação "Stricto Sensu" em Engenharia Agrícola
• Departamento: Engenharia
• País: BR
• Palavras-chave em Português: Agroindústria Águas residuárias; Biogás; Biofertilizante; Patógenos
• Palavras-chave em Inglês: agribusiness; biogas; biofertilizer; methane; reduction of COD
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA
• Link de acesso: http://tede.unioeste.br:8080/tede/handle/tede/361

The growth of the poultry sector, both to supply the internal market and for export, has moved the Brazilian agribusiness. The productive chain of the broiler generates a considerable variety and quantity of waste with the most distinct characteristics. In the case of hatchery waste, has been a considerable volume of material produced, with high pollution potential. Considering the problems this project aimed to study the feasibility of use of hatchery waste by anaerobic co-digestion. To test the co-digestion was used a battery of 20 digesters made with PVC pipes, with a capacity of about 60L each, simulating a horizontal tubular digester. The wastes were disposed of by Cooperativa Agroindustrial Consolata - Copacol and are from the units of Cafelândia - PR (Slaughter of poultry), Nova Aurora - PR (Poultry Hatchery) and Formosa - PR (Unit Production of Piglets - UPL). Five mixtures were evaluated, as follows: Treatment 1: Residue hatchery drained + Waste water tank agribusiness. Treatment 2: Residue hatchery drained + water from the first anaerobic pond agribusiness. Treatment 3: Residue hatchery fresh + water the first anaerobic pond of the hatchery. Treatment 4: Residue hatchery fresh + swine wastewater. Treatment 5 (Mixed): Residue hatchery fresh + water the first anaerobic pond of the hatchery + swine wastewater. Each composed a mixture treatment, which was repeated four times. All blends were processed in the blender. The different mixtures were calculated to obtain a substrate with 4% total solids early in the process - batch phase, and 2% total solids for solid phase. Besides the materials evaluated, all treatments received a percentage of 15% of inoculum (cattle waste) during batch and adaptation phase of the system in continuous feeding. First test was performed in batch, making it possible to define the point of burning the biogas in the different treatments, and the curve of gas production, thus setting the hydraulic retention time (TRH) substrate in the digesters. For the continuous phase digesters were unloaded at the end of the batch phase where the effluent was screened. After, the liquid fraction was again prepared in the digesters. From this phase, began one where supplies still over a month the digesters beyond their daily load also received a percentage of inoculum for there was an adaptation of the system. Analyses were performed to characterize the influent and effluent of the digesters in the batch phase, the waste separately, in the influent and effluent of the continuous phase as well in residue retained in the digester after stage continuous water supply. Specific methodologies were used for analysis, such as: ST, SV, total organic carbon, nitrogen (TKN), minerals, pH, conductivity, COD, and the average potential of biogas production and methane content of methane and carbon dioxide carbon in it. T4 showed the best performance in biogas production. Higher percentages of CH4 in the batch phase were presented by the T2. For the continuous phase, the highest percentages were presented by the T2, T4 and T5. The largest reduction in COD values was observed in plants containing wastewater from the anaerobic pond the fridge - T2. The concentration of minerals in the effluent of the digesters, all treatments, added to biofertilizer agronomic value.