Designed to promote the effect of centrifugal forces while reducing turbulence.

 

In a stationary state, with no input flow, the SDD3 offers a large storage capacity for sediment and oil.  Runoff water enters the unit through the main line (series installation) or through a bypass line (parallel installation). 

At low flows, gravitational force is predominant. When the flow increases, the centrifugal forces become more important allowing superior oil and sediment removal.  

Thanks to its twin vortices, the SDD3 provides the best removal efficiency even at high flow rates.

 

Sediments settle and are collected at the bottom while oils are collected and stored in a separated area.  

In case of extreme rainfall events, the SDD3 is equipped with an internal bypass to prevent risk of sediments resuspension or washout.  

Internal by-pass allows both online and offline configuration.