Downstream Defender Select - Hydrodynamic vortex separator
Verified by manufacturer 2 months ago
Advanced hydrodynamic vortex separator for the effective and reliable removal of fine particles along with oils and other floatable debris from surface water runoff.
Application
The Downstream Defender® Select reliably treats runoff from any impermeable surfaces including:
- Highways
- Car parks
- Industrial areas
- Pre-treatment for natural features such as swales, ponds and detention basins
- For use with other natural Sustainable Drainage Systems (SuDS) treatment to meet required performance standards
- Retrofit
- As part of SuDS and Water Sensitive Urban Design (WSUD) systems.
- Areas where high solids and trash/litter capture are a must
Description
Marshalls Civils & Drainage in a joint venture with Hydro International has introduced a Stormwater treatment system called the Downstream Defender®, an advanced hydrodynamic vortex separator.
The Downstream Defender® is an advanced hydrodynamic vortex separator for the effective and reliable removal of fine particles along with oils and other floatable debris from surface water runoff.
Its innovative design delivers high efficiency across a wide range of flows in a much smaller footprint than conventional or other swirl-type devices and is the perfect choice for any catchment likely to convey high quantities of contamination.
Features and benefits:
- Has unique flow modifying components that have been optimized to deliver unsurpassed capture and retention of pollutants during both frequent and extreme rainfall events.
- Delivers high removal of pollutants through advanced hydrodynamic vortex separation across a wide range of flows, achieving a long, stable flow path to maximize pollutant capture from surface runoff.
- The devise is able to tackle an assortment of pollutants including gross debris, litter, hydrocarbons, coarse sediments, fine sediments and particulate organics.
Targeted Pollutants:
- Fine particles.
- Gross pollutants.
- Liquid and sediment bound hydrocarbons.
- Sediment bound heavy metals.
- Sediment bound nutrients.
General information
Color | Grey |
Finish | Cement |
Material | Precast concrete Plastic |
Shape | Circle |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | R12/437 Vortex flow control units Q10/185 Filtration drainage channels |
Specification data - Filtration and separation systems
System performance | Removal of fine particles, oils and other floatable debris from surface water runoff. |
Form | Hydrodynamic vortex separator. |
Certification | BSI Kitemark: ISO 9001; ISO 14001. |
Chamber | 1.0 m. 1.2 m. 1.5 m. 1.8 m. 2.1 m. Manufacturer guidanceChamber size. |
Pipe sizes | Guidance for specification option: The Downstream Defender® Select can accept a range of pipe sizes to enable easier and more cost-effective installation. Consult manufacturer and insert requirement. |
Inlet | Guidance for specification option: For difficult or complex site arrangements and to remove the need for additional chambers, the Downstream Defender® Select can accept up to three inlets or specially locate the inlet through a 270° range. Consult manufacturer and insert requirements. |
Materials | Concrete. Plastic. Manufacturer guidanceChamber material. |
Sustainability data
Contains Red List materials | No |
Country of product manufacture | United Kingdom |
Case studies
Drainage success for NHS Trust in Coventry
Improving road drainage on the A7