Device and method for separating wet paint overspray

A device for separating wet paint overspray from a stream of crude gas containing overspray particles, comprising at least two filter devices which each comprise an inlet opening through which a partial stream of crude gas enters the respective filter device and at least one respective filter element for separating the overspray from the partial stream of crude gas, wherein a filter surface of the filter element is provided with a barrier layer comprising a filter aid material added to the stream of crude gas, wherein the device comprises at least one reservoir for receiving a mixture of filter aid material and wet paint overspray which has been cleansed from the filter elements of a plurality of filter devices and a mixing device for mechanically blending the cleansed mixture of filter aid material and wet paint overspray from a plurality of filter devices,

• wherein the mixing device comprises at least one mixing tool which is rotatable about a substantially horizontally oriented axis of rotation.