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Advisor(s)
Abstract(s)
Face à escassez de recursos hídricos e às secas, existe uma crescente preocupação
relativamente às aplicações da água para consumo humano. Assim, são prementes
políticas de uso eficiente da água, tais como: reduzir os consumos, reduzir as perdas e
os desperdícios e recorrer a origens alternativas para aplicações não potáveis, como é
o caso do aproveitamento de águas pluviais. O presente estudo apresenta o potencial
de eficiência hídrica no Centro Escolar de Santa Maria da cidade de Bragança. Neste
sentido, são propostas duas opções para redução do consumo de água potável e é feito
um estudo de viabilidade técnica e económica. Da análise dos caudais e volumes de
descarga dos dispositivos de utilização existentes, na primeira opção, propõe-se a substituição
das torneiras por outras hidricamente eficientes e certificadas por entidade
nacional. Na segunda opção, aliado à implementação de torneiras eficientes, o aproveitamento
de águas pluviais para abastecimento de autoclismos, estimam-se poupanças
anuais de água até 75,6% e períodos de retorno do investimento até 5 anos. A mudança
de comportamentos na rega por alteração de intensidade de água ou períodos de rega
pode ser associada a cada uma das opções. Qualquer uma das soluções estudadas pode
ser técnica e economicamente implementada, levando a uma redução considerável na
fatura da água. Desta forma, a adoção destas medidas para um uso eficiente da água no
Centro Escolar de Santa Maria poderá contribuir para minimizar os riscos de escassez
hídrica na região, bem como trazer benefícios em termos económicos para o Município.
Facing the scarcity of water resources and drought, there is a growing concern about the applications of water for human consumption. Thus, it is necessary policies for the efficient use of water, such as: reducing consumption, reducing losses and waste and resorting to alternative sources for non-potable applications, as is the case of rainwater harvesting. This study presents the potential of water efficiency in the Santa Maria School Center of Bragança. In this sense, two options are proposed for reducing potable water consumption and a technical and economic feasibility study is made. From the analysis of the flow rates and discharge volumes of the existing devices in use, the first option proposes to replace the taps by others that are water efficient and certified by a national entity. In the second option, combining the implementation of efficient taps with the use of rainwater to supply flushing cisterns, it is estimated annual water savings until 75.6% and return periods for the investment until 5 years. The change in irrigation behavior due to changes in water intensity or irrigation periods can be associated with each of the options. Any of the studied solutions can be technically and economically implemented, leading to a considerable reduction in the water invoice. Therefore, the adoption of these measures for the efficient use of water in the Santa Maria School Center may contribute to minimize the risks of water scarcity in the region, as well as bring economic benefits to the Municipality.
Facing the scarcity of water resources and drought, there is a growing concern about the applications of water for human consumption. Thus, it is necessary policies for the efficient use of water, such as: reducing consumption, reducing losses and waste and resorting to alternative sources for non-potable applications, as is the case of rainwater harvesting. This study presents the potential of water efficiency in the Santa Maria School Center of Bragança. In this sense, two options are proposed for reducing potable water consumption and a technical and economic feasibility study is made. From the analysis of the flow rates and discharge volumes of the existing devices in use, the first option proposes to replace the taps by others that are water efficient and certified by a national entity. In the second option, combining the implementation of efficient taps with the use of rainwater to supply flushing cisterns, it is estimated annual water savings until 75.6% and return periods for the investment until 5 years. The change in irrigation behavior due to changes in water intensity or irrigation periods can be associated with each of the options. Any of the studied solutions can be technically and economically implemented, leading to a considerable reduction in the water invoice. Therefore, the adoption of these measures for the efficient use of water in the Santa Maria School Center may contribute to minimize the risks of water scarcity in the region, as well as bring economic benefits to the Municipality.
Description
Keywords
Eficiência hídrica Sistema de aproveitamento de águas pluviais Centro escolar Viabilidade técnico-económica Water efficiency Rainwater harvesting system School center Technical and economic feasibility
Pedagogical Context
Citation
Vale, Patrícia; Albuquerque, António; Silva, Flora (2020). Aproveitamento de águas pluviais no Centro Escolar de Santa Maria em Bragança. In VI Encontro de Jovens Investigadores do Instituto Politécnico de Bragança: livro de resumos. Bragança: Instituto Politécnico de Bragança
Publisher
Instituto Politécnico de Bragança