Pasteurization system with purification of the process liquid

A pasteurization system with purification of a process liquid with at least one feed and

• an evacuation conveyor system for containers, comprising:
• a plurality of treatment zones with sprinkling nozzles to spray the containers with the process liquid, each of the plurality of treatment zones includes a screening unit with a sedimentation area for deposition of sediment from the process liquid;
• a closed-loop circuit to re-use the process liquid;
• a separate central filter unit;
• one or more devices for removal of the sediment from the sedimentation areas of each of the plurality of treatment zones and for feeding of the sediment removed from the sedimentation area of each of the plurality of treatment zones into said separate central filter unit;
• the separate central filter unit having at least one filer module to filter solid matter out of the sediment that is fed into the separate central filter unit, so that filtered process liquid is obtained;
• and
• one or more further devices to return the filtered process liquid to one or more of the plurality of treatment zones.