Avaliação energética e das emissões de gases de efeito estufa do Sistema Integrado de Abastecimento de Água de Feira de Santana

• Ano de defesa: 2015
• Autor(a) principal: Guanais, Ana Luiza da Silva Rezende
• Orientador(a): Silva, Eduardo Borges Cohim
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual de Feira de Santana
• Programa de Pós-Graduação: Mestrado em Engenharia Civil e Ambiental
• Departamento: DEPARTAMENTO DE TECNOLOGIA
• País: Brasil
• Palavras-chave em Português: Sistemas de abastecimento de água; ACV; Emissão de Gases de Efeito Estufa
• Palavras-chave em Inglês: Water supply systems; LCA; Energy Demand; Greenhouse Gases
• Área do conhecimento CNPq: ENGENHARIAS::ENGENHARIA CIVIL
• Link de acesso: http://localhost:8080/tede/handle/tede/290

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.