Filter installation, comprising a filter device for cleaning a raw gas flow loaded with paint overspray, the filter device being designed as a regenerable filter device and comprising the following: - a filter element which, during filter operation, is provided with a barrier layer and/or a protective layer which comprises filter aid material, it being possible for paint overspray from the raw gas flow loaded with paint overspray to be deposited on the filter element together with the filter aid material supplied to the raw gas flow; - a receiving container for receiving a system of paint overspray and filter aid material; and - a removal device for removing at least part of the system of paint overspray and filter aid material from the receiving container , characterized in that the filter installation comprises a processing device for processing the system of paint overspray and filter aid material, the processing device comprising a thermal treatment device by means of which the system of paint overspray and filter aid material can be thermally treated in order to process said system, the thermal treatment device being designed as a combustion device, a fluidized bed dryer being used as the combustion device, the system of paint overspray and filter aid material being dried, burned and/or combusted in order to process said system, the filter installation comprising a mixing device by means of which unloaded, fresh filter aid material and a system of paint overspray and filter aid material can be combined and mixed, the filter installation comprising an open-loop control device and/or a closed-loop control device , by means of which a mixing ratio for mixing the unloaded, fresh filter aid material with the system of paint overspray and filter aid material can be controlled in an open-loop and/or closed-loop manner depending on the degree of loading of the filter aid material with paint overspray. - a filter element which, during filter operation, is provided with a barrier layer and/or a protective layer which comprises filter aid material, it being possible for paint overspray from the raw gas flow loaded with paint overspray to be deposited on the filter element together with the filter aid material supplied to the raw gas flow; - a receiving container for receiving a system of paint overspray and filter aid material; and - a removal device for removing at least part of the system of paint overspray and filter aid material from the receiving container , the filter installation comprises a processing device for processing the system of paint overspray and filter aid material, the processing device comprising a thermal treatment device by means of which the system of paint overspray and filter aid material can be thermally treated in order to process said system, the thermal treatment device being designed as a combustion device, a fluidized bed dryer being used as the combustion device, the system of paint overspray and filter aid material being dried, burned and/or combusted in order to process said system, the filter installation comprising a mixing device by means of which unloaded, fresh filter aid material and a system of paint overspray and filter aid material can be combined and mixed, the filter installation comprising an open-loop control device and/or a closed-loop control device , by means of which a mixing ratio for mixing the unloaded, fresh filter aid material with the system of paint overspray and filter aid material can be controlled in an open-loop and/or closed-loop manner depending on the degree of loading of the filter aid material with paint overspray. <EOS>