FilterSepta

GPT are experts in the installation and maintenance of FilterSepta systems. These above-ground interceptors work in conjunction with automatic bund dewatering devices.

Above Ground Oil Interceptor

For sensitive site conditions only, (where there is no underground interceptor tank), we recommend FilterSepta. FilterSepta is a cost-effective above ground system that guarantees a Class 1 discharge of water from the bund to surface water adhering to BS EN 858-1:2002.

These interceptors use phase separation and coalescing devices to remove any emulsified oil or debris, however small, still present in the pumped water from the automatic bund dewatering device.These systems are ideal for both new and retrofit installations, and allow for safe discharge through surface water drainage.

Key Benefits

  •  Performance: Functions to the requirements of a Class 1 full retention oil/water interceptor & relevant section BS EN 858-1:2002 under test conditions.
  •  Quick Installation:Lightweight design allows for manual handling & positioning, speeding up the installation process.
  •  Easy Maintenance: Accessible silt trap chamber and coalescer ensure simple servicing.
  •  Integrated Oil Sensor:Links with the bund dewatering pump to stop further pumping if oil is detected.
  •  High Flow Rate: Handles flow rates of up to 3 litres per second.
  •  Automatic Bypass: Returns excess water back to the bund area to prevent overflow.
  •  Capacity: Oil retention up to 70 litres, with a sludge volume of 100 litres.
  •  Cost-effective:More affordable than traditional interceptor installations.
black above ground interceptor system with a diagram of the internal workings labelled 1 to 4 with arrows to show the flow of the water through the system

1

diagram of the internal workings of filtersepta highlighting water enterring the system throguh T-section and silt settling in first chamber
Step 1

Water enters through T-section to prevent the bottom of the chamber being disturbed by the water flow - allowing any silt & heavy solids to settle at the bottom.

2

diagram of the internal workings of filtersepta highlighting oil floating on top of the water in first chamber
Step 2

Free oil will separate and form a layer at the top which then flows into the next chamber.

3

diagram of the internal workings of filtersepta highlighting liquid flowing from chamber two to three along bottom meaning only clean water passes through
Step 3

The outlet from the 2nd to 3rd chamber is at the bottom of the system, so only water that is free of oil is allowed to pass through.

4

diagram of the internal workings of filtersepta highlighting coalescer filters in final chamber before liquid exits system
Step 4

Finally, two coalescing filters serve to remove any remaining suspended solids and emulsified oils, before discharge of the filtered water.

If, over time, there is a significant build-up of oil in the second chamber, there is an oil sensor that will shut off the automatic bund dewatering device, and alert the site of an issue.

Automatic Bund Dewatering
ReBund
Flapstopper