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Previous issue date: 2009 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / No Vale do Jequitinhonha a suinocultura ? uma atividade predominantemente praticada por pequenos produtores, os quais t?m pouca informa??o sobre o manejo adequado dos dejetos oriundos da atividade. O manejo adotado geralmente se resume ao armazenamento desses dejetos e posterior aplica??o no solo sem um tratamento pr?vio, constituindo um fator de polui??o ambiental. Dessa forma torna-se necess?rio a utiliza??o de dispositivos que promovam a redu??o do potencial poluidor dos dejetos e o reaproveitamento integral desses res?duos como forma de resgate de parte da energia empregada no processo produtivo. Diante disso os objetivos desse trabalho foram avaliar a efici?ncia do sistema de lagoas de estabiliza??o em s?rie na redu??o do potencial poluidor dos dejetos l?quidos de su?nos em uma granja comercial em ciclo completo com 500 animais, com vistas ao seu reaproveitamento como biofertilizante e estimar a quantidade de energia para produ??o de su?nos em ciclo completo e o balan?o energ?tico do sistema com reaproveitamento dos res?duos gerados como biofertilizante em ?rea de pastagem. Foram coletadas amostras em diferentes pontos do sistema de tratamento e efetuadas as an?lises dos seguintes par?metros: pH, Demanda bioqu?mica de oxig?nio (DBO), Demanda qu?mica de oxig?nio (DQO), S?lidos totais (ST), S?lidos totais fixos (STF), S?lidos totais vol?teis (STV), S?lidos suspensos totais (SST), S?lidos suspensos fixos (SSF), S?lidos suspensos vol?teis (SSV), Nitrog?nio total (N-Total), F?sforo (P), Pot?ssio (K), C?lcio (Ca) e Magn?sio (Mg). Quantificou-se o coeficiente energ?tico de cada componente envolvido no processo produtivo de su?nos terminados, tratamento dos res?duos e produ??o de pastagem de Brachiaria decumbens, nas formas de ra??o, trabalho humano, energia el?trica, m?quinas e equipamentos, combust?veis e lubrificantes, instala??es, produ??o de su?nos vivos e produ??o de Brachiaria decumbens. A remo??o da carga org?nica obtida pelo sistema de lagoas de estabiliza??o em s?rie foi de 84,38% da DBO e 85,27% para a DQO. A s?rie de s?lidos apresentou comportamento semelhante e os nutrientes N-Total, P, K, Ca e Mg foram removidos em 28,30; 63,46; 12,24; 42,84 e 74,95% respectivamente. O sistema foi eficiente na remo??o da carga org?nica e o efluente tratado demonstrou caracter?sticas favor?veis ao seu reaproveitamento como biofertilizante. No sistema de produ??o de su?nos avaliado, a quantidade m?dia de energia para produzir 1 kg de su?no vivo foi de 53,35 MJ. De toda energia empregada no sistema 76,03% (1.067.106,07 MJ) se referem ?s entradas e 23,97% (331.400 MJ) as sa?das, resultando em um coeficiente de efici?ncia energ?tica de 0,31. A energia transformada em su?nos para abate correspondeu a 55,58% (184.200 MJ) das sa?das, ao passo que a pastagem de Brachiaria decumbens assumiu um valor de 44,42% (147.200 MJ) apontando que a utiliza??o dos res?duos da cadeia suin?cola promoveu renova??o de energia, reduzindo os impactos ambientais e minimizando a importa??o de energia. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2009. / ABSTRACT Jequitinhonha?s Valley in the pig is an activity practiced primarily by small producers, which have little information on the proper management of waste from the activity. The management adopted generally comes to storage and subsequent application of manure in the soil without prior treatment, constituting a factor of environmental pollution. Thus it is necessary the use of devices that promote the reduction of the pollution potential of waste reuse and full of waste as a way of redemption of part of the energy used in the production process. Considering that the objectives of this study were to evaluate the efficiency of stabilization ponds in series to reduce the pollution potential of liquid pig manure on a commercial farm in full cycle with 500 animals, with a view to its reuse as biofertilizer and estimate the quantity of energy for production of pigs in complete cycle and energy balance of the system to reuse the waste generated as biofertilizer in area of pasture. Samples were collected at different points in the system of treatment and performed the analysis of the following parameters: pH, Biochemical Oxygen Demand (BOD), Chemical oxygen demand (COD), Total solids (TS), Total fixed solid (STF), Solid total volatile (STV), Total suspended solids (TSS), Suspended solids fixed (SSF), Volatile suspended solids (VSS), Total nitrogen (Total-N), Phosphorus (P), Potassium (K), calcium (Ca) and Magnesium (Mg). We quantified the energy coefficient of each component involved in the production process of finished pigs, waste treatment and production of pasture of Brachiaria decumbens in the form of food, human labor, energy, machinery and equipment, fuels and lubricants, plant, production of live pigs and production of Brachiaria decumbens. The removal of organic load produced by the system of stabilization ponds in series was 84.38% and 85.27% of BOD to COD respectively. The series showed similar behavior of solids and nutrients-Total N, P, K, Ca and Mg were removed at 28.30, 63.46, 12.24, 42.84 and 74.95% respectively. The system was efficient in removing the organic load and the treated effluent has characteristics favorable to its reuse as biofertilizer. The production system of pigs evaluated, the average amount of energy to produce 1 kg of live pigs was 53.35 MJ. Of all energy used in the 76.03% (MJ 1,067,106.07) refer to inputs and 23.97% (331,400 MJ) the exits, resulting in a coefficient of efficiency of 0.31. The energy transformed into pigs for slaughter was 55.58% (184,200 MJ) of output, while the pasture of Brachiaria decumbens took a value of 44.42% (147,200 MJ) indicating that the use of pig waste in the chain promoted renewal of energy, reducing environmental impacts and minimizing the import of energy.
| Identifer | oai:union.ndltd.org:IBICT/oai:acervo.ufvjm.edu.br/jspui:1/539 |
| Date | 2009 June 1930 |
| Creators | Souza, C?ssio Vin?cius de |
| Contributors | Campos, Alessandro Torres, Silva, Enilson de Barros, Campos, Alessandro Torres, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Silva, Enilson de Barros |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFVJM, instname:Universidade Federal dos Vales do Jequitinhonha e Mucuri, instacron:UFVJM |
| Rights | info:eu-repo/semantics/openAccess |
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