Pasteurization system with purification of the process liquid, with a feed and evacuation con-veyor system for containers at least one treatment zone with sprinkling nozzles to spray the containers with a process liquid such as water, whereby the treatment zone comprises a screening unit with a sedimentation area for the deposition of sediment from the process liquid with a closed-loop circuit to re-use the process liquid with devices to remove the se-diment from the sedimentation area for each zone and to feed the sediment into a central filter unit whereby the central filter unit comprises at least one filter module for the filtration of solid matter from the inputted sediment so that the filtered process liquid is conserved and with devices to return the filtered process liquid to one or several treatment zones.
