Browsing by Author "Oliveira, Gustavo Gabriel Lima de"
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- Dimensionamento de um sistema público de drenagem de águas residuais de um loteamento urbano: comparação entre o regulamento português e as normas brasileirasPublication . Oliveira, Gustavo Gabriel Lima de; Silva, Flora; Destro, Cesar Augusto MedeirosDiante da imperativa necessidade global de universalizar o acesso ao saneamento básico, a formulação de parâmetros relativos à concepção e desenvolvimento de sistemas públicos de drenagem de águas residuais emerge como um elemento fundamental na implementação de redes economicamente mais viáveis, contudo, mantendo a eficácia dos sistemas. Nesse contexto, o propósito desta pesquisa foi analisar os distintos parâmetros adotados nas diretrizes normativas de Portugal e Brasil. A análise não se restringiu aos parâmetros técnicos estipulados nas normativas de ambos os países, mas estendeu-se a uma avaliação prática em um loteamento urbano situado numa cidade do Nordeste de Portugal. Isso envolveu a análise dos parâmetros relacionados ao dimensionamento hidráulico e à implementação dos sistemas dimensionados utilizando diferentes critérios. Como resultado, observa-se que o dimensionamento do sistema utilizando os parâmetros estipulados pelas normas brasileiras, fazendo uso de uma tubulação de diâmetro de 125 mm para os coletores, revela-se economicamente mais vantajoso, apresentando um custo total de implantação de 17.932,94 EUR + IVA, o que equivale em reais brasileiros a 96.400,03 + IVA. Em contrapartida, o regulamento português adota parâmetros de dimensionamento mais conservadores, considerando como mínimo o diâmetro de 200 mm para os coletores, resultando em um custo relativamente mais elevado. O custo de implantação do sistema dimensionado de acordo com o regulamento português totalizou 19.241,26 + IVA, em euros, e 103.433,01 + IVA, em reais brasileiros. Consequentemente, conclui-se que a adoção de parâmetros mais conservadores, embora resulte em sistemas mais robustos e resilientes a situações adversas e futuras, acarreta custos relativamente mais elevados, dificultando a implantação desse tipo de estrutura em áreas onde tais sistemas são escassos ou inexistentes.
- Promoting water efficiency in a student residence as a contribution to sustainability: hydroSAAP innovation projectPublication . Silva, Flora; Barros, João; Afonso, Maria João A.P.S.; Oliveira, Gustavo Gabriel Lima de; Fachada, Ivone; Geraldes, Ana MariaIn addition to the constraints on water availability caused by climatic factors, many urban areas face demographic and pollution phenomena that can affect the efficient supply of water to the population. Therefore, it is increasingly important to implement water efficiency measures, such as reducing consumption by installing water-efficient devices (e.g., taps, showers, and flushing cisterns), without neglecting behavioral aspects, and using alternative sources for non-potable uses. Thus, the “HydroSAAP” innovation project was designed and launched in May 2023 to improve the management of water consumption in a student residence of a Higher Education Institution in the northeast of Portugal, while promoting technical and scientific knowledge about rainwater harvesting systems, still little explored in Portugal. The project phases are: (1) installation of a rainwater harvesting system for non-potable uses, such as floor washing and irrigation of green areas, and water-efficient devices; (2) estimation of water consumption per use after installation of the system and devices (by carrying out a survey to the residents and employees), and promotion of technical and scientific knowledge about the system (e.g., evaluation of the quality of the collected rainwater considering the type of roof, local climatic conditions, and storage time in the reservoir) and (3) knowledge transfer to the academic community and other stakeholders: (i) disseminate the system and devices installed and the knowledge obtained in phase 2; (ii) raise awareness of the importance of the project in water management and (iii) organize seminars, lectures and school visits to the building, as well as activities in collaboration with civil society institutions such as the Ciência Viva Centre. The results of this project include the completion of phase 1 in July, with the installation of the system, seven showers and a kitchen tap with a class A water efficiency rating and certified by a national organization. Phases 2 and 3 are underway. In phase 2, the quality of the rainwater collected by the system has been analyzed since September. The survey about “Water consumption habits in the student residence” was approved by the Institution's Ethics Committee at the end of November and will be addressed to the residents and employees. In phase 3, the project has already been combined with educational practice, having been disseminated to the academic community through the organization of the seminar “Sustainability in the use of water: Importance, techniques and challenges”, which took place in November at the Institution, with the participation of experts in the field of sustainable water use and reuse, mostly involving students from Civil and Environmental Engineering and local stakeholders. It is important to note that the involvement of the students and stakeholders in this project will help to disseminate the obtained knowledge and could be the starting point for further promoting education for sustainable water use. It is also intended to replicate this project for other types of buildings and other non-potable uses, and to extend it to the industrial and agricultural sectors. As the activities of this project will be extended beyond the funding period (planned until December 2023), it is hoped that it will make an overall contribution to promoting sustainable water management in urban areas.
- Promoting water efficiency in a student residence as a contribution to sustainability: hydroSAAP innovation projectPublication . Silva, Flora; Barros, João; Afonso, Maria João A.P.S.; Oliveira, Gustavo Gabriel Lima de; Fachada, Ivone; Geraldes, Ana MariaThis study presents the preliminary results of the “HydroSAAP” innovation project, promoted by a Higher Education Institution in the northeast of Portugal, and ongoing since May 2023. It aims to improve the management of water consumption in a student residence, while promoting technical and scientific knowledge about rainwater harvesting systems, still little explored in Portugal. The project phases are: (1) installation of a rainwater harvesting system for non-potable uses, and water-efficient devices (showers and taps); (2) estimation of water consumption per use after installation of the system and devices, and promotion of technical and scientific knowledge about the system and (3) knowledge transfer to the academic community and other stakeholders. The results of this project include the completion of phase 1 in July, with the installation of the system, seven showers and a kitchen tap with a class A water efficiency rating and certified by a national organization. Phases 2 and 3 are underway. In phase 2, the quality of the rainwater collected by the system has been analyzed since September. Preliminary results indicate that water from the first rains, after a long dry period, must be discarded. In phase 3, the project has already been combined with educational practice, having been disseminated to the academic community through the organization of the Seminar “Sustainability in the use of water: Importance, techniques and challenges” which took place at the Institution, with the participation of experts in the field of sustainable water use and reuse, mostly involving students from Civil and Environmental Engineering and local stakeholders. It is important to note that the involvement of the students, the residence users and other stakeholders in this project will help to disseminate the obtained knowledge and could be the starting point for further promoting education for sustainable water use. It is also intended to replicate this project for other types of buildings and other non-potable uses, and to extend it to the industrial and agricultural sectors. As the activities of this project will be extended beyond the funding period, it is hoped that it will make an overall contribution to promoting sustainable water management in urban areas.