Potential rainwater harvesting and greywater reuse in office buildings in Brasilia, Brazil
DOI:
https://doi.org/10.46421/sispred.v3.2984Keywords:
Water end-uses, Rainwater harvesting, Greywater reuse, Economic analysis, Reductions in the exploration of water resources, Office buildingsAbstract
ABSTRACT: The main objective of this paper was to carry out a comparative analysis of the feasibility of rainwater harvesting and greywater reuse systems in office buildings in Brasilia, Brazil. Therefore, this research incorporated quantitative and qualitative methodologies to compose representative models to estimate their potential for potable water savings and verify the costs and benefits generated at the building scale and at the city scale. Overall, greywater reuse systems presented better environmental and financial benefits than rainwater harvesting systems. However, by using both technologies in a complementary way, it is possible to promote higher water savings, equivalent to 851 m³ per office building per year, which would represent a reduction in urban water demand of 85,983.32 m3/year and in exploration expenses at R$ 442,814.10 ($ 81,552.59 USD; € 80,079.08 EURO) per year.
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References
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