The VortSentry is a hydrodynamic separator that uses vortex settling to remove sediment, trap debris and trash, and separate floatable oil and grease. Its compact design is well suited for space constrained and urban sites, where the installation of a larger stormwater treatment is impractical. Depending on state regulations, these devices are either used by themselves, or as a pretreatment system in conjunction with other stormwater treatments. This prefabricated system is online with an internal bypass. It is composed of a weir and a baffl e mounted internally in a four-foot diameter concrete storm drain.

This treatment’s unobstructed access and lack of moving parts enables easy maintenance. Maintenance requirements are similar to other hydrodynamic separators, and include the periodic removal of solids by a vacuum truck.