Aproveitamento da água de chuva para irrigação do jardim em um condomínio residencial

Abstract

Among possible solutions for water conservation, the use of rainwater appears as a good alternative, as it helps to reduce the consumption of drinking water from the supply companies, generating financial savings, as well as helping the environment. The viability of the system depends basically on the joint analysis of three factors: demand, precipitation and collection area. Therefore, the present study aims to evaluate the feasibility of using a rainwater harvesting system for irrigation of a garden, based on the analysis of data referring to the factors mentioned above, applied in a residential condominium. The main steps of the study were: (1) identification of the object of study; (2) data surveys, such as: rainfall index, available area of coverage, and water consumption used for irrigation; (3) calculation of monthly water abstraction; and (4) carrying out the design of the reservoir to collect rainwater. As a main result, it was found that 100% of the water used for irrigation can be recycled water of rainwater, totaling a saving of 5,000 liters per month.