Prevent 100% of CSO floatables and gross solids and 95% of CSO grit and sediment from reaching the environment.
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 sites, preventing damaging pollutants from reaching the environment.
Non-powered and self-cleansing, the Storm King® is ideal for satellite treatment at overflow sites and has been shown to reduce project costs by up to 50% compared to conventional technologies.
The Storm King® is an advanced hydrodynamic vortex separator and screen that delivers exceptional removal of total suspended solids (TSS), biological oxygen demand (BOD), gross solids and floatables at combined sewer overflow (CSO) sites, helping engineers and operators to improve wastewater management systems and prevent damaging pollutants from reaching the environment.
The Storm King® screens and removes 100% of solids, floatables and neutrally buoyant material larger than 6 mm, meets primary treatment equivalency for sediment and BOD and can also be used as a contact vessel for disinfection. A small-footprint, low-headloss solution, it is non-powered, self-activating and self-cleaning, making it ideal for low-maintenance remote and satellite CSO sites.
Storm King® has been shown to reduce project costs by up to 50% when compared to conventional technologies.
The Storm King® delivers 100% removal in two directions of gross solids, floatables and neutrally buoyant material larger than 6 mm, and achieves 95% removal of TSS and BOD - equivalent to primary treatment.
The Storm King® incorporates both a screen and a hydrodynamic separator to ensure exceptional removal of CSO pollutants, and trials conducted in the USA at Columbus, GA and Saco, ME show that the unit can also be used to provide disinfection in 30% of the area normally required for conventional disinfection technologies - enabling the system to provide three treatment functions in a single unit.
The Storm King® is a small-footprint, non-powered, low-maintenance unit with low capital and O&M costs, and offers up to 50% project cost savings when compared with conventional technologies such as micro-strainers.
With no moving parts, no power requirements and self-cleansing components, the Storm King® is a low-maintenance CSO treatment and wastewater management solution.
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.
The internal components direct the main flow away from the perimeter and back up the middle of the vessel as a broad spiraling column, rotating at a slower velocity than the outer downward flow (red arrow). 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.
The swirl cleanse screen captures all floatables and neutrally buoyant material greater than 6 mm. The air-regulated siphon provides an effective backwash mechanism to prevent the screen from blinding.
The collected solids and floatables are then discharged by gravity or pumped out from the base of the unit to the sanitary sewer.
Floatables, gross solids, neutrally buoyant material: 100% of 6 mm in two directions
High rate disinfection in less than 8 minutes
Grit and sediment: 95% removal of grit 106 micron and larger can be provided; different size systems can be provided for different levels of grit removal performance.