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Downstream Defender Select - Hydrodynamic vortex separator

Verified by manufacturer 3 months ago

Marshalls Civils & Drainage

Advanced hydrodynamic vortex separator for the effective and reliable removal of fine particles along with oils and other floatable debris from surface water runoff.

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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

Ss_50_70_85_32 Filtration and separation systemsPrimary

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.

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Manufacturer guidance

Chamber 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 guidance

Chamber material.

Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Material

Precast concrete

Plastic

Case studies

Drainage success for NHS Trust in Coventry

Drainage success for NHS Trust in Coventry

Improving road drainage on the A7

Improving road drainage on the A7