Marsh Hydroil Full retention separators

A full retention oil separator is used where there may be a ‘high risk’ of a significant fuel spillage, such as vehicle workshops

Designed and tested to BS EN858 parts 1&2, Marsh Hydroil full retention separators are manufactured from virgin unfilled resin offering exceptional durability, impact resistance and are guaranteed to be watertight and of uniform thickness. These combined properties ensure that the full range of separators stand up to the most rigorous conditions during their service life.

Internal working components, such as coalescing filters, automatic closure devices, weirs, oil skimmer plates, and their configurations offer the most modern and efficient oil/water separation capability available to the market today.

A wide choice of inlet and outlet positions are available on the units – detailed requirements should be provided at time of order (standard inlet and outlet positions will otherwise be fitted).

Typical applications

  • Vehicle workshops
  • Refuel facilities
  • Fuel storage sites

 

 

Mitigation indices

As the world focuses on more green and environmentally friendly solutions, Marsh Industries has examined how effective their separators are when incorporating them into sustainable drainage schemes.

The company tested their full retention Hydroil separator range for total suspended solids and metal mitigation indices in line with industry-approved procedures at PIA, the notified test house in Aachen, Germany. This is in addition to an existing test procedure, whereby the Hydroil has already achieved EN858-1 certification for light liquid separators.

Combining these two test sets together and applying the simple index approach to proprietary/manufactured EN858 devices, the Hydroil separator range is able to achieve the following mitigation indices:

Hydrocarbons: 97.5%
Total Suspended Solids: 84.35%
Total Metal Reduction: 63.26%

The results will provide user confidence that the testing of this range is beyond reproach and cements these products as the complete surface water treatment solution for SuDS schemes.

 

Operating principle

Marsh Hydroil full-retention separators treat the full flow that is delivered by the drainage system, which is normally equivalent to the flow generated by a rainfall intensity of 65mm/hr.

KEY

  1. Inlet
  2. Coalescer
  3. Outlet

4. Access turret

5. Air vent

6. Level alarm dip pipe

FLOW PATH

 

Benefits

  • Designed and tested to meet latest UK and European standards
  • Corrosion resistant
  • Tank shells guaranteed for 25 years with a design life of 50 years
  • Heavy duty shells enable installation in all ground conditions
  • Easy access turrets for maintenance and servicing (Turret guards optional)
  • Various alarm types available (Required by EN858-1)
  • Variable invert depths and inlet/outlet configurations ­­­to suit individual site conditions
  • Vented turrets dissipate excessive fumes and vapours

 

 

Specifications

Model Max flow (litre/sec) Drainage area (m2) Silt storage (litres) Oil storage (litres) Width +/-50mm Length +/-50mm Height +/-50mm Connection size Inlet invert Outlet invert
NSFR 3 3 170 300 30 1200 1400 1840 160 900 950
NSFR 4 4.5 255 450 40 1200 1700 1840 160 900 950
NSFR 6 6 340 600 60 1200 2400 1840 160 900 950
NSFR 8 8 453 800 80 1200 3200 1840 160 900 950
NSFR 10 10 566 1000 100 1200 3500 1840 160 900 950
NSFR 15 15 851 1500 150 1800 3600 2440 200 900 1000
NSFR 20 20 1137 2000 200 1800 4000 2440 200 900 1000
NSFR 30 30 1700 3000 300 1800 4800 2440 250 900 1000
NSFR 40 40 2265 4000 400 1800 6200 2440 315 900 1000
NSFR 50 50 2800 5000 500 1800 7500 2440 315 900 1000
NSFR 60 60 3233 6000 600 2622 5200 3172 315 900 1000
NSFR 65 65 3670 6500 650 2622 5600 3172 315 900 1000
NSFR 70 70 4318 7000 700 2622 6000 3172 315 900 1000
NSFR 80 80 4533 8000 800 2622 6600 3172 315 900 1000
NSFR 100 100 5666 10000 1000 2622 8600 3172 315 900 1000
NSFR 125 125 7082 12500 1250 3128 7200 3678 400 900 1100
NSFR 150 150 8500 15000 1500 3128 8400 3678 400 900 1100
NSFR 165 165 9166 16500 1650 3128 9300 3678 400 900 1100
NSFR 175 175 9800 17500 1750 3128 10000 3678 400 900 1100
NSFR 200 200 11110 20000 2000 3128 11300 3678 400 900 1100
NSFR 210 210 11898 21000 2100 3128 11500 3678 400 900 1100
NSFR 250 250 14165 25000 2500 3128 13800 3678 400 900 1100
NSFR 275 275 15582 27500 2750 3128 14500 3678 400 900 1100