title: Sampling, testing and modeling particle size distribution in urban catch basins.
abstract: The study analyzed the particle size distribution of particulate matter (PM) retained in two catch basins located, respectively, near a parking lot and a traffic intersection with common high levels of traffic activity. Also, the treatment performance of a filter medium was evaluated by laboratory testing. The experimental treatment results and the field data were then used as inputs to a numerical model which described on a qualitative basis the hydrological response of the two catchments draining into each catch basin, respectively, and the quality of treatment provided by the filter during the measured rainfall. The results show that PM concentrations were on average around 300 mg/L (parking lot site) and 400 mg/L (road site) for the 10 rainfall-runoff events observed. PM with a particle diameter of <45 μm represented 40-50% of the total PM mass. The numerical model showed that a catch basin with a filter unit can remove 30 to 40% of the PM load depending on the storm characteristics.
authors.affiliation: University of Calabria, Department of Civil Engineering, Cubo 42B, Rende (CS), Italy E-mail: marco.carbone@unical.it.
authors.forename: G
authors.initials: G
authors.lastname: Garofalo
authors.affiliation: University of Calabria, Department of Civil Engineering, Cubo 42B, Rende (CS), Italy E-mail: marco.carbone@unical.it.
authors.forename: M
authors.initials: M
authors.lastname: Carbone
authors.affiliation: University of Calabria, Department of Civil Engineering, Cubo 42B, Rende (CS), Italy E-mail: marco.carbone@unical.it.
authors.forename: P
authors.initials: P
authors.lastname: Piro
mesh_terms: D004784:Environmental Monitoring / Q000379:methods; D008962:Models, Theoretical; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis; D014867:Water / Q000737:chemistry*; D014872:Water Movements
chemical_list: D052638:Particulate Matter; D014867:Water