Metodologia de viabilidade econômica para implantação do reúso de água nas prestadoras de serviços de saneamento e transporte por caminhão-pipa

• Ano de defesa: 2022
• Autor(a) principal: Alencar, Karina de Moura Costa
• Outros Autores: [e-mail]
• Orientador(a): Santos, Ana Sílvia Pereira
• Banca de defesa: Oliveira, Gesner , Martins, Eduardo Monteiro
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade do Estado do Rio de Janeiro
• Programa de Pós-Graduação: Programa de Pós-Graduação em Engenharia Ambiental
• Departamento: Centro de Tecnologia e Ciências::Faculdade de Engenharia
• País: Brasil
• Palavras-chave em Português: Engenharia ambiental; Água – Reuso; Desenvolvimento de recursos hídricos; Saneamento; Abastecimento de água
• Palavras-chave em Inglês: Environmental engineering; Water - Reuse; Development of water resources; Sanitation; Water supply
• Área do conhecimento CNPq: ENGENHARIAS::ENGENHARIA SANITARIA::SANEAMENTO AMBIENTAL::CONTROLE DA POLUICAO
• Link de acesso: http://www.bdtd.uerj.br/handle/1/18543

Brazil is the sixth most populous country, so it has the potential to be the sixth largest producer of domestic effluents on the planet. With the New Legal Framework and the maturing of public policies for the integrated management of water resources allied to sustainable development, water reuse has been playing a more significant role in modern sanitation. However, only approximately 1.5% of the volume of treated sewage is reused in a planned manner. It was identified that one of the greatest difficulties in implementing water reuse was related to the economic viability of the activity. Thus, this work developed a feasibility methodology for the commercialization of water reuse in sanitation providers. For this, it selected six states to implement the model: Rio de Janeiro, São Paulo, Minas Gerais, Espírito Santo, Pernambuco and Ceará. It started by classifying the existing market structure, and then the steps were built. The first stage focused on the identification of the offer. A method was adopted to detect the best characteristics for choosing a Effluent Treatment Plant (ETP) for the investment in water reuse (ETP Reuse), using the Analytic Hierarchy Process multi-criteria calculator. Then, the type of production was selected, and the reuse of water observed at ETP Alegria (CEDAE) was used. With the application of economic theory in engineering, a structure of production costs was built. This model was used in the six research regions. The second step focused on identifying demand. For this, the consumer analysis was developed observing the exchange relationship between drinking water and water for reuse. Next, demand volumes were estimated for low, medium and high consumption. In the third stage, the tariffs that made the model economically viable in the six states were calculated, analyzing the effects of economies of scale on prices. In the fourth step, with the results obtained, the maximum commercially acceptable distances between the ETP Reuse and the consumer were calculated. Finally, the analysis of the economic feasibility of water reuse in sanitation service providers with transport by water truck in the states of Rio de Janeiro, São Paulo, Minas Gerais, Espírito Santo, Pernambuco and Ceará was concluded.