Influence of building rainwater harvesting systems on the damping of rainwater drainage from building areas
DOI:
https://doi.org/10.46421/sispred.v3.2971Keywords:
Rainwater harvesting, Runoff control, Source drainage system, On-lot drainageAbstract
ABSTRACT: The aim of this work is to evaluate different rainwater harvesting reservoir volume scenarios and their influence on meeting the rainwater consumption profiles of a multi-family residential building and on buffering surface runoff generated by the building's waterproofed areas. The analysis used historical rainfall series compared to the demand for rainwater consumed in a real building located in Goiânia - GO. From the analysis of the results, it can be seen that only the reservoir designed to supply 100% of the water demand (1,748.70 m³), taking into account the entire dry season, was able to promote the greatest reduction in the volume of water run-off, resulting in around 89.41% of runoff damping and 10.59% of overflow. On the other hand, a reservoir of such proportions is, in most cases, a technically and economically unviable structure. As for the other reservoir volumes studied, it was observed that the larger the reservoir, the greater the capacity to retain and dampen the surface runoff hydrograph. It would therefore be more feasible to install smaller reservoirs in conjunction with drainage systems at source, such as infiltration dry-wells and trenches.
Downloads
References
BRASIL. Constituição (2017). Decreto nº 13501, de 30 de outubro de 2017. Brasília, DF.
DORNELLES, F. Aproveitamento de água de chuva no meio urbano e seu efeito na drenagem pluvial. Tese de doutorado. Programa de Pós-Graduação em Engenharia de Recursos Hídricos e Saneamento Ambiental da Universidade Federal do Rio Grande do Sul. Porto Alegre – RS. 219p. 2012.
HAMEL, P.; DALY, E.; FLETCHER, T. Source-control stormwater management for mitigating the impacts of urbanisation on baseflow: A review. Journal of Hydrology – Elsevier. Vol. 485, 201-2011p. 2013.
MENEZES, F. C. M e TUCCI, C. E. M. Alteração na relação entre densidade habitacional x área impermeável: Porto Alegre – RS. Rega – Revista Gestão de Água da América Latina. V. 9, N. 1, p.19-55, 2012.
REIS R.P.A., ILHA M.S.O., TEIXEIRA P.C. Sistemas prediais de infiltração de água de chuva: aplicações, limitações e perspectivas. [REEC] Revista Eletrônica de Engenharia Civil, Vol. 7, N. 3, Goiânia – GO, 2013.
RODRIGUES, José Carlos Moreira Resende; NEVES, Mário Valente. Sistemas de Aproveitamento de Águas Pluviais: Dimensionamento e Aspectos Construtivos. 2010. 112 f. Dissertação (Mestrado) - Curso de Engenharia Civil, Faculdade de Engenharia, Universidade do Porto, Porto, 2010.
SOLTO, S. L.; REIS, R. P. A.; CAMPOS, M. A. S. Impact of Installing Rainwater Harvesting System on Urban Water Management. Water Resources Management. Vol. 37, p.583-600, https://doi.org/10.1007/s11269-022-03374-z.
STEPHENS K. A.; GULIK, T. V. D.; MACLEAN L.; VON EUW, E. Re-inventing urban hydrology in british columbia: runoff volume management for watershed protection. (2003) In: Proceedings, National Conference on Urban Storm Water: Enhancing Programs at the Local Level. Disponível em: <http://www.epa.gov/owow/NPS/natlstormwater03/38Stephens.pdf>. Acessado em 20 de junho de 2011.
TRAVER, R. G.; EBRAHIMIAN, A. Dynamic design of green stormwater infrastructure. Front. Environ. Sci. Eng. Vol. 11, n.4, DOI 10.1007/s11783-017-0973-z. 6p. 2017.
TUCCI C.E.M., Gestão de Águas Pluviais Urbanas. Programa de Modernização do Setor Saneamento. Secretaria Nacional de Saneamento Ambiental. Ministério das Cidades. V. 4, 194p. Brasília – DF, 2005.
