At high risk sites like petrol stations and fuel depots, spills or overflows of petrol, oil or diesel need to be contained to prevent them from entering the stormwater drainage system.
Global Water’s EcoTreat Class 1 Full Retention device effectively treats every day episodic spills of diesel and oil, plus contains major spills that may occur.
The Full Retention FR Series is fitted with a coalescing treatment device that ensures that any hydrocarbon contaminated run-off is treated to comply to the stringent Class 1 requirements of the EN 858-1, with a stormwater discharge quality of less than 5 mg/L oil content.
The FR Series is suitable for secondary stormwater treatment, successful in removing sediment, suspended solids and hydrocarbons.
|Treatment flow rate (L/s)||7||12||25|
|Inlet diameter (mm)||125||160||250|
|Outlet diameter (mm)||125||160||250|
|Oil storage volume (L)||40||70||300|
|Sediment storage volume (L)||400||700||3000|
- fuel depots and refuelling stations
- petrol station forecourts
- industrial loading zones
- aircraft / helicopter facilities
- commercial trucking yards
- mining and heavy vehicle service areas
- transformer stations and wind farms
A full-scale performance test of the Global Water EcoTreat Class 1 Full Retention was conducted by the University of South Australia.
Five samples were collected using the outflow arrangement in accordance with the requirements of EN 858-1. The mean concentration of the outflow tested C6-C40 was 1.52 mg/L, considerably better than the minimum 5 mg/L requirement of the Class 1 water quality requirements of European Standard EN858-1 which is recognised universally as best practice by regulatory bodies.
ECOTREAT GROSS POLLUTANT TRAP (OPTIONAL)
The EcoTreat Gross Pollutant Trap is a particularly useful upstream addition to the treatment train where there is a high solids loading. The easy to clean silt basket removes gross pollutants plus a high percentage of sand and silt, reducing the load on the downstream treatment device.
EMERGENCY STORAGE CHAMBER
In high-risk environments where a major spill can occur, an Emergency Storage Chamber is installed prior to the EcoTreat Full Retention. This ensures the entire spill is contained during a catastrophic event.
The inlet pipe has a liquid seal which prevents flammable vapours from venting up into the pipework system.
SOLIDS SETTLING CHAMBER
All inflow first passes through the settling chamber, allowing removal of gross pollutants and fine sediment.
OIL SEPARATION/STORAGE CHAMBER
Captured oil and other hydrocarbons are held in the oil storage chamber. The capacity of this chamber meets the requirements of EN 858-1.
COALESCING TREATMENT DEVICE
All run-off passes through a coalescing treatment device which combines small droplets of light liquids such as oil and diesel, allowing them to be trapped and removed, ensuring the oil content in the outflow is less than 5 mg/L.
AUTO CLOSURE DEVICE (ACD)
The ACD is engineered to be sensitive to changes in liquid density as a result of fuel, oil or diesel build-up in the oil storage chamber. In the event of a spill, the ACD shuts off the outlet and stops any further discharge, containing the spill on site and preventing any contamination of the stormwater system.
OIL SENSING PROBE
In high-risk sites including petrol stations, the EPA requires an Oil Sensing Probe to monitor for a high accumulation of hydrocarbons. When the level reaches the predetermined depth, an alarm is triggered signalling that a spill has occurred or that the unit requires maintenance.
SILT ALARM (OPTIONAL)
A Silt Alarm Probe can be mounted inside the main chamber to give a fault signal when there is an excess build-up of silt and sludge.
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The EcoTreat range includes a Bypass Oil/Water Separator as well as the Full Retention device. More information on the collection of stormwater products is available in the brochure.
|EcoTreat Class 1 Stormwater Treatment Device - Full Retention||Brochure||Download|