In this context, Professor Giuseppe Cirelli delivered a presentation titled “Nature-based solution (NBS) for water management in urban and sub-urban areas,”. The discussion highlighted the challenges posed by climate change and the increasing soil impermeabilization due to urbanization. Furthermore, ongoing activities and initial results from hydraulic modeling activities within the GIFLUID project, involving the cross-border territories of Malta and Sicily, were presented to evaluate the effects of green infrastructures.
The report highlighted the limitations of traditional grey infrastructures in effectively managing meteoric waters and explored the importance and applicability of NBS and Natural Water Retention Measures (NWRM). These multifunctional tools aim to protect water resources and address water-related challenges, maintaining or restoring ecosystems. The concept of “Sponge City” was introduced, and various types of urban green infrastructures, such as rain gardens and porous pavements, were explored, with the aim of reducing drainage volume and improving water quality through pre-treatment systems for pollutant removal. Through practical examples and case studies, such as the implementation of green infrastructures in Sicily and the use of phytodepuration techniques, the report illustrated how the planning, design, and management of green infrastructures require a multidisciplinary and multi-objective approach.