Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2016-01-25T22:30:30Z No. of bitstreams: 1 disserta??o Ana Luiza Guanais.pdf: 971227 bytes, checksum: c1befe0af70f9dc10fa2b94870a2b82f (MD5) / Made available in DSpace on 2016-01-25T22:30:30Z (GMT). No. of bitstreams: 1 disserta??o Ana Luiza Guanais.pdf: 971227 bytes, checksum: c1befe0af70f9dc10fa2b94870a2b82f (MD5) Previous issue date: 2015-03-11 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Considering the importance of the sanitation sector for the development of a country and energy costs and the potential environmental impacts associated with it, this paper proposes the application of Life Cycle Assessment (LCA) to calculate the energy intensity and greenhouse gas (GHG) Water Supply System of Feira de Santana (SIAA-FSA). They were identified in the supply chain system steps with higher energy costs and proposed improvement scenarios. The production chain of chemical inputs, transportation of supplies, electricity and replacement of pipes in the network to maintain the system were considered. Energy intensity - IE the total system was 3.51 kWh/m3 of water consumed. The step of capturing and distributing water were the most important in IE, because the consumption of electric pumping energy represented 86% of IE. For the impact category chosen in the IPCC method (2007) 100 years, GHG emissions from the SIAA-FSA were 0.47 KgCO2eq / m3de water actually consumed, 75% resulting from the use of electricity. Alternative scenarios evaluated showed significant improvements over the current setting and more rational use of inputs water, electricity and chemicals. / Considerando a import?ncia do setor de saneamento para o desenvolvimento de um pa?s e os encargos energ?ticos e os potenciais impactos ambientais associados a ele, o presente trabalho prop?e a aplica??o da Avalia??o do Ciclo de Vida (ACV), para o c?lculo da intensidade energ?tica e a emiss?o de Gases de Efeito Estufa (GEE) do Sistema de Abastecimento de ?gua de Feira de Santana (SIAA-FSA). Foram identificadas na cadeia produtiva as etapas no sistema com maiores encargos energ?ticos e propostos Cen?rios de melhoria. A cadeia de produ??o dos insumos qu?micos, transporte dos insumos, energia el?trica e substitui??o dos tubos na rede para a manuten??o do sistema foram consideradas. A intensidade energ?tica ? IE total do sistema foi 3,51 kWh/m3 de ?gua consumida. A etapa de capta??o e distribui??o de ?gua foram as mais relevantes na IE, pois o consumo de energia el?trica do bombeamento representou 86% da IE. Para a categoria de impacto escolhida no m?todo IPCC (2007) 100 anos as emiss?es de GEE do SIAA-FSA foram de 0,47 KgCO2eq/m3de ?gua efetivamente consumida, 75% decorrente do uso de energia el?trica. Os Cen?rios alternativos avaliados demonstraram melhorias significativas em rela??o ao Cen?rio atual, com usos mais racionais dos insumos ?gua, eletricidade e produtos qu?micos.