Reuso de água de drenagem subterrânea em canteiro de obras e para irrigação de jardins: um estudo de caso em Fortaleza-CE

Abstract

The research consists of a case study with the construction site of a multifamily residential building located in the city of Fortaleza-Ceará. For this purpose, parameters of Consolidation Ordinance N° 5 (for drinking water), requirements of ABNT NBR 15900-1 / 2009, in the case of water interacting with cement, in addition to criteria established in Resolution CONAMA No 375, in the case of water for garden irrigation. For use in activities that require potability, the water from the lowering system was not technically feasible. As for its reuse in other activities of the construction site, such as concrete and mortar manufacturing and others that do not require minimum requirements, the reuse of water generated savings of R$ 225,869.04, representing 0.21% in the construction budget. In addition, for the reuse of the irrigation system in the condominium gardens, it generated an estimated monthly savings of 294 cubic meters of water and R$ 8,437.92. In addition to generating savings for the project during its construction and during its post-delivery life, the reuse of this drainage water makes it possible to not use drinking water for non-noble activities.