Análise da viabilidade de implantação de sistemas de descarga a vácuo em edificações públicas: estudo de caso aplicado ao Núcleo de Inovação Tecnológica da UFRN

Abstract

Given the problems of scarcity and the degradation of water quality worldwide, resulting from high consumption growth, environmental pollution and the irrational use of drinking water, it is evident the need to implement effective instruments that contribute to the minimization of the water crisis. Against this background, the present work aims the technology of vacuum toilets, which uses only 1.2 liters of water per drive, reducing the consumption of drinking water and consequently a reduction of the discharge of liquid effluents. Through the monthly demand of water for flushing toilets of 18.84 m³ / month from the Technological Innovation Center of the Federal University of Rio Grande do Norte, Natal-RN campus, considering 20 working days, with the replacement of toilets with unloading box by vacuum basins, it was possible to reach the monthly demand of only 1.26 m³ / month, reaching a savings of 93.32% in water consumption. In addition, considering the system implementation cost of R $ 78,529.63 and an annual savings of R $ 11,506.63, the return time of 3.9 years was calculated. Thus, the study demonstrates that the system used results in a way to mitigate the degradations caused to the environment, generating savings, as well as boosting environmental education in future professionals.