The Storm King^® is an advanced hydrodynamic vortex separator and screen that delivers exceptional removal of TSS, BOD and other materials at Combined Sewer Overflow (CSO) sites, preventing damaging pollutants from reaching the environment during heavy rainfall and surge events.

Combining both a screen and a hydrodynamic separator, the Storm King^® achieves exceptional removal of CSO pollutants, delivering 100% removal of floatables and gross pollutants and 95% removal of grit and sediment.

A small-footprint, non-powered, low-maintenance unit with low capital and O&M costs, the Storm King^® is ideal for satellite treatment at overflow sites and can reduce project costs by up to 50% compared to conventional technologies. And with Hydro-Logic^® Smart Monitoring technology you can rest assured that it's performing and protecting the environment exactly as designed at all times. 

Applications

• Floatables control, sedimentation, and disinfection of CSOs
• New satellite CSO facilities and upgrades to existing CSO facilities
• Treatment of excess stormwater flows at WWTPs
• Stormwater treatment at central stormwater treatment plants
• Combined sedimentation, screening, and disinfection

1. Flow is introduced tangentially into the side of the Storm King^®, causing the contents to rotate slowly about the vertical axis.

2. The flow spirals down the perimeter, allowing the solids to settle out. This process is aided by rotary forces, shear forces and drag forces at the boundary layer on the wall and base of the vessel.

3. The internal components direct the main flow away from the perimeter and back up the middle of the vessel as a broad spiral column, rotating at a slower velocity than the outer downward flow. By the time the flow reaches the top of the vessel, it is virtually free of settleable solids and is discharged to the outlet channel. Prior to discharge, the overflow passes through the swirl cleanse screen.

4. The swirl cleanse screen captures all floatables and neutrally buoyant material greater than 6 mm / ¼ in. The air-regulated siphon provides an effective backwash mechanism to prevent the screen from blinding.

5. The collected solids and floatables are then discharged by gravity or pumped out from the base of the unit to the sanitary sewer.