Removal of Suspended Solids from Stormwater Runoff Using a Fabric Filter System

Abstract

Non-point source pollution associated with suspended solids in stormwater has been known to often adversely affect surface water ecosystems. Various methods of treating stormwater in the basin area before the stormwater reaches the receiving body of water have been developed. However, these treatment methods tend to be costly to install and also to maintain. In this study, an economical way of removing TSS (total suspended solids) from stormwater runoff with a fabric filter system was developed. Polyester was chosen as a fabric-filter material, because it was found to be economical in cost and relatively resistant to various chemicals. An experimental device was developed and used to determine filtration rates through polyester fabric samples of a series of several pore-opening sizes (20 µm to 94 µm) under a series of water-heads (0.25 to 1 m). It was found that the filtration rate increased as the size of water head increased. It was also found that the smaller the pore size of the fiber filter was, the higher the TSS removal efficiency was. However, the TSS removal efficiency was not found to be much different among the filters with different sizes of pore opening due to the fact that most mass of TSS was associated with large particles.

Development of a Sustainable First Flush Management System for Urban Stream Water Quality Management

“…7. Conceptual design of the first flush treatmentsystem to remove non-point source pollutants due to rainfall in urban basins (a)(Koo et al 2015) and the pilot scale treatment system installed inside the storm water monitoring system in the field (b)(Seo et al 2016b).…”