Physico-chemical characteristics of sediment accumulated in settling basin of a filtration best management practice

Abstract

Transport of constituents by stormwater runoff from paved surfaces in urban areas can directly affect the water quality of receiving waters and soils. Metal elements are the most evident constituents associated with particles found in stormwater runoff and the mitigation of its impact considers best management practices (BMPs). Physical treatment facilities such as filtration and sedimentation systems are typically applied to remove the particles and associated pollutants carried by the runoff. Hydrological characteristics of runoff as well as the physical and chemical characteristic of the particles influence the performance of BMPs. In this study, the size distribution of accumulated sediment and associated heavy metals in different particle size fractions generated specifically from the settling basin of a filtration BMP located at the Vehicle Registration Office parking lot in Samgadong, Yongin City, Kyunggi Province, Korea were determined. The highest fraction of particles collected from the basin wa...