Potencial de aproveitamento de águas pluviais dos blocos 71, 81 e 90 (LA4, LA5 E LA6) do CEASA/PE.

Abstract

The objective of this work was to propose the use of rainwater from blocks 71, 81 and 90 (Sheds LA4, LA5 and LA6) of the Centro de Abastecimento e Logística de Pernambuco (CEASA/PE) as a sustainable alternative to reduce the consumption of potable water supplied by the COMPESA concessionaire and by the Estação de Tratamento de Água (ETA) of the aforementioned warehouse. The experimental study was carried out through bibliographical research with related themes, technical norms and calculation methods for dimensioning reservoirs and estimating thedrainage capacity of roofs. Data collection was carried out with the Department of Engineering of CEASA/PE through visits, provision of projects, files and documents. For the dimensioning of the captured rainwater reservoirs, the Rippl and Prático Brasileiro methods were used, 1,000 m³ and 90 m³, respectively, for a demand of 848 m³ and 12,232.15 m² of catchment area. For dimensioning the specific reservoir for discarding the first water, approximately 12.23 m³, the method described in the manual for capturing rainwater from the Instituto de Pesquisas Tecnológicas do Estado de São Paulo was used. The study points out that 3.569 liters of chlorine will be needed to disinfect the collected rainwater and that there will be an average monthly saving of 238% in the consumption of drinking water. This study indicated the feasibility of using rainwater from the studied areas, being feasible, according to the locality's rainfall regime.