Implantação de Sistemas de Uso de Águas Cinzas e Aproveitamento de Águas Pluviais em um Residencial Multifamiliar de Pequeno Porte.

Abstract

It is known that water is an indispensable asset for humanity. It is necessary in all human and economic processes. Although more than 50% of the planet is covered by water, only 3% of it is considered potable and this resource is increasingly scarce. Due to economic and population growth, the planet is about to face a water collapse. In order to reduce this impact and to make feasible the management of this precious resource, alternative methods for the use of non-potable water in residential environments were developed. The method of using gray water and the use of rainwater reduces the water volume required for supply, providing direct savings even in costs. For this purpose, a work was elaborated theorizing the implantation of a system of abstraction of gray water and rainwater for less noble use in a small multifamily building. In order to do this, a traditional water supply and collection system was designed, a sourcing system was used to reuse gray water, the design of a rainwater harvesting system, the pluviometric study, and the calculation of supply and demand Of gray water from the building, estimating the volumes and costs saved, calculating the cost of implementing the reuse and rainwater harvesting systems, and finally comparing a normal water supply system with a gray water reuse system with a That contains the pluvial capture system, defining the time necessary for the return of the invested capital. Throughout the analysis of the results, it was noticed that the rainwater harvesting system became extremely costly, so that its implantation became impracticable. As for the reuse system, it met the objectives considered.