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VOLUME DO RESERVATORIO DE APROVEITAMENTO DE AGUA PLUVIAL BASEADO NO CONCEITO DO BALANCO DE VAZOES PARA UMA RESIDENCIA UNIFAMILIAR

2008; Volume: 14; Issue: 3 Linguagem: Inglês

10.5212/publi.exatas.v.3i2.217227

1809-0281

Rodrigo Braga Moruzzi, Samuel Conceição de Oliveira, Gabriela Carvalho,

Agricultural and Food Sciences

The urban rainwater harvesting is an up-to-date subject and is linked to sustainable builds theme.The storage reservoir, or cistern, is one of the most important units of the rainwater harvesting system.The cistern design depends on catchments characteristics, local rainfall and demands.The volume equalization, Rippl´s Method, is one possible design criteria, however, the cistern dimensions become very large and costly when considering that it must remain fi lled mostly in order to supply water to the dry season demands.On the other hand, the maximum harvesting concept (MHC) proposed by Mierzwa ( 2007) is based on the hypothesis that rainwater must be used during the rain season.Thus, it considers that the rainwater harvesting occurs only when the storage volume is equal or greater than the demand.This work compared the Rippl and MHC methods in order to supply the water demand of a toilet fl ush in low-income households.The cistern volume obtained by means of the maximum harvesting method was considerably lower than the one obtained by the Rippl's Method, implying lower costs and shorter pay back time.Results pointed out that the application of the maximum harvesting concept may make the rainwater harvesting system in lowincome houses easer and cheaper.