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Storm King ® Overflow0 pages
Storm King® Overflow
Advanced CSO Treatment
An advanced vortex separator with a self-cleansing, non-powered, screen.
Product Profile
Applications
The Storm King® Overflow Screen is an advanced hydrodynamic
vortex separator with an integral unique, non-powered, selfcleansing screen. The system is ideal for satellite treatment at
overflow sites and has been shown to save municipalities up to
50% on overall project costs when compared to conventional
solutions.
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New and retrofit CSO facilities.
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Screening system can be retrofited to existing Storm King®
Overflows.
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Remote treatment sites.
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Floatables control for CSOs and collection systems.
Advantages
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Mixing for disinfection.
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Primary treatment equivalency.
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No moving parts or power requirement.
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Self-activating and self-cleansing.
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Low headloss.
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100% removal of 6 mm in 2 direction solids including
floatables, gross solids and neutrally buoyant material.
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Removes up to 95% of grit and sediments.
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Small footprint.
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Low capital and life cycle costs.
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Minimal maintenance.
How it Works
Self-cleaning Screen
Backwash
Siphon
Hydro-Brake®
Flow Control
Dip Plate
Helical
Underflow
Channel
Screenings
Underflow
Settleable Solids
Underflow
Cone Base
Flow is introduced tangentially into the side of the Storm King®
causing the contents to rotate slowly about the vertical axis.
The flow spirals down the perimeter allowing 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
(red arrow).
The internal components direct the main flow away from the
perimeter and back up the middle of the vessel as a broad spiralling
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 self-cleaning screen
(dark blue arrow).
The self-cleaning screen captures all floatables and neutrally
buoyant material down to 6mm. The air regulated siphon provides
an effective backwash mechanism to prevent the screen from
blinding (light blue arrow).
The collected solids and floatables are then discharged by gravity
or pumped out from the base of the unit to the Continuation flow to
the treatment works (brown arrow).
www.hydro-int.comt
Tel: 01353 645700
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