Abstract: The present invention relates to a device for treating a gas/liquid mixture, comprising: —an upright vessel (1) with a lower and upper compartment; —an inlet (2) for admitting the flow of mixture into the lower compartment; —an agglomerating unit (10) placed between the lower and upper compartment for enlarging the liquid droplets in the mixture; —a lower outlet (4) for discharging the substantially liquid-containing mixture part from the lower compartment; —an upper outlet (5) for discharging the substantially gas-containing mixture part from the upper compartment; characterized by —collecting means (11) for collecting on the downstream side of the agglomerating unit liquid droplets which have broken through the agglomerating unit; —recycling means (12) for recycling the collected liquid to the lower compartment from the collecting means.

Abstract: Method and system for extraction of fat or oil-soluble components, e.g. PAH, NDP and/or BTX, from produced water being separated from an oil or gas plant. The method is characterized by injection of a liquid consisting of hydrocarbons from the oil or gas plant into the water flow, the injection liquid having a lower content of the oil soluble components than the original oil phase in equilibrium with the water, the injection liquid is atomized into the whole water phase and the water/hydrocarbon mixture is given a predetermined retention time thus to allow mass transferring of the oil soluble components from the water to the injection liquid, before the injection liquid is separated from the water in a separator, preferably a hydro cyclone, the injection liquid being adapted to the separators working range for pressure and temperature.