Field-based assessment of the influence of a combined SUDS system consisting of a permeable pavement and a stormwater tank on urban runoff quality
Sustainable Urban Drainage Systems (SUDS) are designed to protect the natural water cycle, to manage flood risk and to improve runoff quality. Permeable pavements (PP) are a type of SUDS that allow rainwater to infiltrate through the soil or convey it to stormwater tanks for storage before its contr...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad del País Vasco |
| Repositorio: | Addi. Archivo Digital para la Docencia y la Investigación |
| OAI Identifier: | oai:addi.ehu.eus:10810/75684 |
| Acceso en línea: | http://hdl.handle.net/10810/75684 |
| Access Level: | acceso abierto |
| Palabra clave: | sustainable urban drainage systems permeable pavements runoff quality metal(loid)s polycyclic aromatic hydrocarbons |
| Sumario: | Sustainable Urban Drainage Systems (SUDS) are designed to protect the natural water cycle, to manage flood risk and to improve runoff quality. Permeable pavements (PP) are a type of SUDS that allow rainwater to infiltrate through the soil or convey it to stormwater tanks for storage before its controlled release and/or later use. To support climate change adaptation, a combined PP–stormwater tank system was implemented in Legazpi, a town in northern Spain. This study evaluates the impact of this system on urban runoff water quality. Water samples were collected during multiple rainfall events at three points: the inflow, the outflow from PPs, and the stormwater tank. Various physical and chemical parameters were analysed, including turbidity, total suspended solids (TSS), electrical conductivity, pH, dissolved oxygen, nutrients, 18 metals and metalloids, and 16 Polycyclic Aromatic Hydrocarbons. Results showed a significant decrease in water turbidity and TSS contents after passing through the PP: the inflow contained 2–20 times higher turbidity and 1.2–10 times higher TSS values. Concentrations of Fe, Mn, Ba and Cu are reduced by 46–72%. By contrast, the PP outflow revealed 1.2–2.5 times higher conductivity and there was a threefold increase in nitrate content. Naphthalene and the sum of 16 PAHs appeared to decrease, but further investigation is needed to demonstrate this statistically. As regards the stormwater tank, the study shows that there is no ecological risk for the aquatic ecosystem associated with the stored water. |
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