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Oil Interceptors



Full Retention Interceptors

Full retention oil interceptors are used in sites with a medium to high risk of oil spills or contamination. Examples include, maintenance garages, Goods vehicle parks, Refuse recycling etc. Full retention oil interceptors treat the full flow that can be generated by rainfall with an intensity of 60mm/h.

There are three types of Full retention oil interceptors:

  • Class 1- Full retention with coalescence filter and Automatic shut-off (where there is a high risk of an oil spill)
  • Class 1 – Full retention with coalescence filter and without Automatic shut-off (where there is a medium risk of an oil spill)
  • Class 2 – Full retention without coalescence filter or Automatic shut-off (Can only be used where discharge to a wastewater treatment system)

Class 1 - Buderous

Aswaclear® FR-NS-10-C Buderus
  Example of usage: Light industrial use, low silt content
Drawing number: FR-NS-10-C-00 Buderus
Nominal flow: 10 l/s
Area covered: 555 m2
Max. silt storage cap.: 4,000 litres
Oil retention capacity: 800 litres
Total system volume: 8,000 litres
Aswaclear® FR-NS-10-HC Class 1
  Example of usage: Medium industrial use, normal silt content
Drawing number: FR-NS-10-HC-00
Nominal flow: 10 l/s
Area covered: 555 m2
Max. silt storage cap.: 5,000 litres
Oil retention capacity: 1,000 litres
Total system volume: 10,500 litres
Aswaclear® FR-NS-10-CC Buderus
  Example of usage: Medium industrial use, normal silt content
Drawing number: FR-NS-10-CC-00 Buderus
Nominal flow: 10 l/s
Area covered: 555 m2
Max. silt storage cap.: 6,000 litres
Oil retention capacity: 1,600 litres
Total system volume: 16,000 litres
Aswaclear® FR-NS-20-CC Buderus Class 1
  Example of usage: Large carpark, workshop
Drawing number: FR-NS-20-2C-00
Nominal flow: 20 l/s
Area covered: 1,110 m2
Max. silt storage cap.: 5,000 litres
Oil retention capacity: 1,800 litres
Total system volume: 16,000 litres
Aswaclear® FR-NS-50-2C Ortner Class 1
  Example of usage: Large carpark, workshop
Drawing number: FR-NS-50-2C-00
Nominal flow: 50 l/s
Area covered: 2,773 m2
Max. silt storage cap.: 2,000 litres
Oil retention capacity: 4,000 litres
Total system volume: 16,000 litres

HDP

Aswaclear® FR-NS-6-H hdp Class 1
  Example of usage: Small carpark, workshop
Drawing number: FR-NS-6-H-00 hdp
Nominal flow: 6 l/s
Area covered: 333 m2
Max. silt storage cap.: 800 litres
Oil retention capacity: 400 litres
Total system volume: 2,500 litres
Aswaclear® FR-NS-10-HH hdp Class 1
  Example of usage: Large carpark
Drawing number: FR-NS-10-HH-00 hdp
Nominal flow: 10 l/s
Area covered: 555 m2
Max. silt storage cap.: 1,000 litres
Oil retention capacity: 550 litres
Total system volume: 5,000 litres
Aswaclear® FR-NS-20-C hdp Class 1
  Example of usage: Carwash, carpark
Drawing number: FR-NS-20-C-00 hdp
Nominal flow: 20 l/s
Area covered: 1,110 m2
Max. silt storage cap.: 2,500 litres
Oil retention capacity: 1,000 litres
Total system volume: 8,000 litres

Class 2

Aswaclear® FR-NS-10-3H Class 2
  Example of usage: Industrial use with direct discharge to sewer
Drawing number: FR-NS-10-CL2-3H-00
Nominal flow: 10 l/s
Area covered: 555 m2
Max. silt storage cap.: 2,500 litres
Oil retention capacity: 1,000 litres
Total system volume: 7,500 litres
Aswaclear® FR-NS-20-3H Class 2
  Example of usage: Large carpark, workshop
Drawing number: FR-NS-20-CL2-3C
Nominal flow: 20 l/s
Area covered: 1,110 m2
Max. silt storage cap.: 2,300 litres
Oil retention capacity: 1,500 litres
Total system volume: 7,500 litres
Aswaclear® FR-NS-20-CL2-3C Class 2
  Example of usage: Large carpark, workshop
Drawing number: FR-NS-20-CL2-3C
Nominal flow: 20 l/s
Area covered: 1,110 m2
Max. silt storage cap.: 6,000 litres
Oil retention capacity: 4,000 litres
Total system volume: 24,000 litres

Projects

Throughout Ireland, Molloy Precast have provided full retention interceptors for many clients.
Some of these include:

  • Corry Recycling, Derry, 30,000 litre, full retention interceptors
  • AES Ireland, 16,000 litre full retention interceptors
  • Bradshaw / Brodericks
  • Tesco, Esso, Maxoil, Topaz, and Texaco Service Stations with forcourt interceptors