Indicadores de consumo de água e análise comparativa entre o aproveitamento de águas pluviais e o reúso de águas cinzas em edificações de ensino do Campus Darcy Ribeiro - UnB

• Autor(a) principal: Barbosa, Guilherme Gomes
• Data de Publicação: 2018
• Outros Autores: Bezerra, Samira Pinho, Sant'Ana, Daniel
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: P@ranoá
• Texto Completo: https://periodicos.unb.br/index.php/paranoa/article/view/25557
• topic: Indicadores de Consumo de Água; Aproveitamento de Águas Pluviais; Usos-Finais de Água; Edificações de Ensino; Reúso de Águas Cinzas

This work has characterized the end-uses of water of higher education buildings in Darcy Ribeiro Campus- University of Brasilia and with this, a comparative analysis of the performance of rainwater harvesting(RWH) and greywater reuse (GWR) systems for non-potable uses was made. The study was divided intothree stages. In the first stage, water consumption indicators were generated based on billed waterconsumption, built area and population for each building analyzed. Water end-uses for toilet flushing,lavatories, drinking fountains, floor washing and irrigation were estimated through the use ofquestionnaires (directed to students, teachers and employees) and structured interviews (to managersand maintenance teams). In the second stage, a series of simulations were carried out to verify watersavings for different RWH and GWR systems based on three non-potable scenarios: i) Irrigation and floorwashing (Scenario 1); ii) Toilet flushing (Scenario 2); and iii) Irrigation, floor washing and toilet flushing(Scenario 3). In the final stage, a comparative analysis of the performance, based on water reductionswas carried out. Results showed that for the first scenario, both systems are capable of supplying waterdemand. However, most systems were not capable of fully supplying water demand for Scenarios 2 and3. In general, rainwater harvesting stood out as the best option, promoting higher water savings ragingfrom 137 to 19,510 m3/year, depending on the size of the building.