The disclosure relates to a collecting device for collecting fluid media (e.g. rinsing agent, paint residues), which are produced when rinsing an atomizer (e.g. rotary atomizer) in a painting plant. The collecting device according to the disclosure comprises a collecting container with an insertion opening at the top of the collecting container for inserting the atomizer into the collecting container. Furthermore, the collecting device according to the disclosure comprises a lateral container wall which externally delimits the collecting container and is substantially impermeable to paint in order to prevent paint from escaping from the collecting container. The disclosure provides that the lateral container wall of the collecting container is at least partially air-permeable so that moist air can escape from the interior of the collecting container to the outside.