Publicação
Hydraulic study of a sustainable urban drainage system, using innovative porous media
| Resumo: | Sustainable Urban Drainage Systems (SuDS) constitute a green, innovative, and effective solution in the design of urban drainage systems or in rehabilitating existing stormwater sewer networks. These emerging systems provide a relevant contribution to mitigate the harmful impacts of climate change on the hydraulic performance of conventional urban drainage systems. The permeability increase of urban pavements and the hydrographs regularizing precipitation events lead to an increase in the damping and delaying of flood flow peaks, for each return period. This work presents the results obtained in experimental tests, conducted in a pilot installation, to evaluate the hydraulic behaviour of biofiltration beds (BB), made up by two different innovative porous media, incorporating local waste materials like textile waste, cigarette filters, and eggshells, and to compare this performance with that of a reference situation (conventional drainage system). Results analysis showed that both porous media in this type of green infrastructure had similar hydraulic performance and even presented good improvements compared to the used reference system. In the several analysed hydrographs, a marked elongation of the base of the hydrograph area was observed, resulting in a sixfold increase in the duration of the monitored flow rates at the BB outlet. This significant increase in the storage capacity of these new porous media allows us to conclude that green infrastructures constitute a promising sustainable drainage alternative, with benefits in mitigating urban floods, hot island effects, and pollutant loads discharged to receiving waters. As a nature-based solution, the progressive implementation of SuDS should not be neglected in future strategies for adapting cities to climate change. |
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| Autores principais: | Duarte, A. A. L. S. |
| Outros Autores: | Oliveira, J. P. D. |
| Assunto: | Sustainable drainage systems Urban flood control Biofiltration beds Engenharia e Tecnologia::Engenharia Civil C: Mathematical and Quantitative Methods Água potável e saneamento Cidades e comunidades sustentáveis |
| Ano: | 2026 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso embargado |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | Sustainable Urban Drainage Systems (SuDS) constitute a green, innovative, and effective solution in the design of urban drainage systems or in rehabilitating existing stormwater sewer networks. These emerging systems provide a relevant contribution to mitigate the harmful impacts of climate change on the hydraulic performance of conventional urban drainage systems. The permeability increase of urban pavements and the hydrographs regularizing precipitation events lead to an increase in the damping and delaying of flood flow peaks, for each return period. This work presents the results obtained in experimental tests, conducted in a pilot installation, to evaluate the hydraulic behaviour of biofiltration beds (BB), made up by two different innovative porous media, incorporating local waste materials like textile waste, cigarette filters, and eggshells, and to compare this performance with that of a reference situation (conventional drainage system). Results analysis showed that both porous media in this type of green infrastructure had similar hydraulic performance and even presented good improvements compared to the used reference system. In the several analysed hydrographs, a marked elongation of the base of the hydrograph area was observed, resulting in a sixfold increase in the duration of the monitored flow rates at the BB outlet. This significant increase in the storage capacity of these new porous media allows us to conclude that green infrastructures constitute a promising sustainable drainage alternative, with benefits in mitigating urban floods, hot island effects, and pollutant loads discharged to receiving waters. As a nature-based solution, the progressive implementation of SuDS should not be neglected in future strategies for adapting cities to climate change. |
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