Hydrocarbon separators in polyethylene

Info

A hydrocarbon separator removes hydrocarbons (derivatives of crude oil) from wastewater. In the following circumstances the installation of a hydrocarbon separator may be necessary:

In places where work is done on vehicles
On car parks
In petrol stations, car-washes, …

If the wastewater is discharged into surface water, or into an artificial drainage systems of rainwater, a coalescence filter can be obligatory following local or notional legislation. The volume of the hydrocarbon separator depends on the flow rate discharged.

Please contact our technical service in order to determine the correct type.

For hydrocarbon separators we can offer two types with sediment collector:

Built-in mud trap: this type has a built-in partition allowing the first compartment to function as a sediment collector (KAS).
Built-in mud trap: in this case a tank is installed before the hydrocarbon separator. The big advantage is that the installation is easier and quicker than the installation with a built-in mud trap. (KAAS).

All our separators come with a riser the height of which can be adjusted and with an opening for ventilation.

Operation

Operation separator

The water coming from the garage, car parks, … loaded with hydrocarbons but without the sludge, enters the tank by means of an anti-splash device. The hydrocarbons will separate from the water because their density is lower than the density of water.

They collect on the surface of the water. At the outlet of the installation a siphon with an automatic valve is installed. The automatic valve consists of a float that can move in a vertical pipe and seals at the bottom. This float has been made in such a way that it can float on the water but not on the oil. As more and more hydrocarbons collect in the tank, the water surface and of course also the float will descend. As soon as the float gets to the bottom of the tube, it will close the outlet, and no more liquid can be discharged. When this happens, the installation must be cleaned.

Operation coalescence filter

The coalescence filter consists of separate, floating carriers with a specific surface of 200 m² per m³. It enlarges the distance between in and outlet thus giving the smaller hydrocarbon particles the time necessary to separate from the water. The use of separate, floating carriers means this system can be more easily and more quickly cleaned than other systems. The filter must not be taken out of the tank where it would contaminate the surrounding area. These systems should always be equipped with a coalescence filter.

Have the tank pumped out, while having the carriers washed down with water, and afterwards have the tank refilled with water.


HCS-separator in initial use (clear water)	HCS-separator saturated (HCS-layer floats on top. The float closes outlet of the separator.)

Boralit has 3 alarm systems in its range of products as an option for hydrocarbon separators:

KANA: level alarm with floater: gives a signal when the maximum level of hydrocarbon in the separator is reached.
KANA 2: electronic level alarm: gives a signal before the maximum level of hydrocarbon in the separator is reached.
KANA 3: Electronic mud and sandalarm. Gives a signal before the maximum level of hydrocarbon in the separator is reached. Closet with steering unit.

Product range

Polyethylene

Hydrocarbon separators - to be placed in regular sand

Without coalescence filter

Without mud trap Volume: 1.100,1.600,2.400 litres Flow rate: 1,5 to 8 l/s

With integrated mud trap Volume: 2.400, 3.300, 6.000 litres Flow rate: 6 to 20 l/s

With built-on mud trap Volume: 2.200, 3.200 litres Flow rate: 1,5 to 3 l/s

With coalescence filter

Without mud trap Volume: 1.100, 1.600, 2.400 litres Flow rate: 1,5 to 8 l/s

With integrated mud trap Volume: 2.400, 3.300, 6.000 litres Flow rate: 6 to 20 l/s

With built-on mud trap Volume: 2.200, 3.200 litres Flow rate: 1,5 to 6 l/s

Hydrocarbon separators - to be placed in consolidated sand

Without coalescence filter

Without mud trap Volume: 300, 500, 850 litres Flow rate: 1,5 to 6 l/s

With integrated mud trap Volume: 300, 500, 850 litres Flow rate: 1,5 to 6 l/s

With built-on mud trap Volume: 600, 800, 1.000, 1.150, 1.350, 1.700 litres Flow rate: 1,5 to 6 l/s

With coalescence filter

Without mud trap Volume: 300, 500, 850 litres Flow rate: 1,5 to 6 l/s

With integrated mud trap Volume: 300, 500, 850 litres Flow rate: 1,5 to 6 l/s

With built-on mud trap Volume: 600, 800, 1.000, 1.150, 1.350, 1.700 litres Flow rate: 1,5 to 6 l/s