Full retention separators

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Our full retention separators keep hydrocarbons and other pollutants away from surface water, even during flow surcharges.

Rewatec full retention separator
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Peace of mind

Ultra-reliable performance

Fail-safe features come standard

Low maintenance costs

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Built to last

Robust GRP tanks

Leak-proof design

Quality-controlled components

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Made to order

Standard and custom options

Full range of storage capacities

Probes easily optimized on site

What is a full retention separator?

Rewatec full retention separator

A full retention separator is a specialized tank that removes oil, fuel, chemicals, and solids from the full flow of stormwater to ensure they cannot contaminate the surrounding environment.

Ideal for drainage areas of up to 30,000 m2, our full retention separators bring trusted performance to any property with a high risk of surface water contamination.

Our solutions are designed to treat rainfall intensities of up to 65 mm per hour, which is often referred to as torrential rain.

Where are our full retention separators used?

Rewatec full retention separators are most often solutions for:

  • petrol and gas stations
  • fuel storage facilities
  • large car parks and parking lots
  • vehicle workshops
  • scrap yards

How do our full retention separators work?

Rewatec full retention separator operation

Contaminated stormwater enters the full retention separator through the main inlet pipe.

The system allows sediment to settle on the bottom of the tank. It holds the liquid portion of stormwater long enough for hydrocarbons to separate and rise to the surface. These pollutants are safely retained until they can be extracted according to local regulations.

Decontaminated water then passes though a coalescing filter before being discharged from the tank.

All Rewatec full retention separators are fitted with safeguards. A high-level alarm triggers when the maximum retention capacity is reached. An automatic closure device also comes standard to keep accumulated pollutants from flowing through the system.

Full retention separator maintenance

Protect your property and the environment by having your Rewatec full retention separator regularly emptied by a qualified service professional.

The frequency of service depends on the application, the capacity of your tank, and the environmental regulations in your area. It is best to speak with a local expert to determine the service schedule that is right for you.

Where do we offer full retention separators?

We proudly offer Rewatec full retention separators in the United Kingdom. Exports are available.

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