Drawings Here!

Phase 1: Dry weather level.

The V2B1 utilizes two round structures of varying diameters (depths for both structures are typically equal). The two structures are connected by a series of three pipes.

Phase 2: First flush, two month storm.

The first chamber (1) is designed to separate the contaminated particulate (brown) from the drain water. The inlet pipe is offset to introduce the influent tangentially into the first structure. Floating pollutants (red) such as petroleum, litter and organics are pushed through the center pipe into the floatable containment chamber (2).

Phase 3: Rising storm flow intensity.

As the volume of flow through the inlet pipe increases, a swirl begins to develop in the first chamber (1). Liquid levels in the structures correspond with the intensity of the storm event.

Phase 4: Residual floatable transport.

Residual floatables, which were not transferred to the floatable containment chamber (2) during the initial storm flow, rise to the point of overcoming the vertical portion of the bottom pipe called the "Coriolus Intake". The residuals are then drawn into the middle of swirl-chamber (1) and delivered to the floatable containment chamber (2) in a low-flow circumstance.

Phase 5: Peak flow, floatable chamber bypass.

The corner stone of the V2B1 hydraulic design is the top pipe connecting the vortex separator to the outlet chamber (3). This "shunt", under peak storm design, carries the majority of flow directly to the outlet chamber (3). By discouraging peak flows from passing under the baffle wall, any Venturi effect on or discharge of captured pollutants from the V2B1 system are minimized.

Phase 6: Dry weather pump-out.

The frequency of pump-out is based on the site loading, periodic monitoring and measurements of captured pollutant levels in the swirl-chamber (1). If the V2B1 is maintained on a regular schedule, the only chamber that requires pumping is the swirl-chamber (1). This will remove both solid and floating pollutants from the system.

Take a look at the Animated View!