The Downstream Defender® is an advanced hydrodynamic vortex separator that provides impressive and reliable removal of fine and coarse particles, hydrocarbons and floatable debris from surface water runoff, delivering high levels of stormwater treatment over a wide range of flow rates.
Available in a range of sizes, it can function as either pretreatment or as a stand-alone device, providing engineers and contractors with a flexible, cost-effective stormwater management option.
Targeted Pollutants:
- Fine and coarse particles / total suspended solids (TSS)
- Floatable trash and debris
- Liquid- and sediment-bound oils and hydrocarbons
- Sediment-bound heavy metals
- Sediment-bound nutrients
Applications:
The Downstream Defender® reliably treats surface water runoff from impermeable surfaces including highways, car parks, industrial areas and urban developments
- As part of green infrastructure, LID or LEED systems
- Areas where high solids and trash capture are a must
- Control of silting upstream of wetlands, ponds and basins
- Industrial stormwater pollution control
Certifications & Verifications:
- New Jersey Corporation for Advanced Technology (NJCAT)
- New Jersey Department of Environmental Protection (NJDEP)
- Environmental Technology Verification (ETV) Canada
- Washington State Technology Assessment Protocol – Ecology (TAPE) for Pretreatment
- Virginia Department of Ecology BMP Clearinghouse
- Ohio Department of Transportation
- St. Louis Metropolitan Sewer District
- California Water Boards Full Trash Capture
- Florida Department of Environmental Protection (Accepted)
Save space and money
Downstream Defender® can treat high peak flows in as little as half of the footprint of other structural BMP systems. A smaller footprint means an easier install that’s less expensive and requires less work.
The Downstream Defender® is proven to prevent washout of captured pollutants. Carefully designed internal components isolate the pollution storage areas, ensuring that what is captured is retained, even during high flows.
Adaptable
The Downstream Defender® can accommodate a change in outlet pipe direction to suit site-specific requirements.
Cut headloss
Low headloss means more site flexibility and provides engineers with design options for shallower sites.
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