Liquid receiving container for separately collecting liquid waste, the liquid receiving container having a container bottom and an upper container opening, which is closable by a container cover and openable to fill in liquid waste, wherein the liquid receiving container is detachably connectable to a trolley housing, wherein the liquid receiving container comprises a container suction port integrated into a lower end section of a sidewall of the liquid receiving container or into the container bottom, by means of which a fluidic connection can be produced in order to extract a fluid from a bottom section of an interior of the liquid receiving container, wherein the suction port is realized in the form of an automatically closing check valve, which allows a volume flow from the interior by applying a vacuum at the suction port, the valve blocking a volume flow in the opposite direction and being closed as long as a minimum differential pressure between the interior and an outer end of the check valve is not reached, wherein the minimum differential pressure is chosen in such a way that the valve does not open when the interior of the fluid receiving container is filled with fluid, wherein the liquid receiving container comprises an associated coupling unit which is configured for detaching the liquid receiving container from a cabin docking station, wherein the coupling unit comprises two or more cavities in the container bottom which are connectable with coupling elements protruding from the cabin docking station to provide a positive connection between the two or more cavities and the coupling elements, and wherein the container suction port is configured to produce a fluidic connection to a station suction port of the cabin docking station when the liquid receiving container is coupled by means of the associated coupling unit to the cabin docking station. the liquid receiving container having a container bottom and an upper container opening, which is closable by a container cover and openable to fill in liquid waste, wherein the liquid receiving container is detachably connectable to a trolley housing, wherein the liquid receiving container comprises a container suction port integrated into a lower end section of a sidewall of the liquid receiving container or into the container bottom, by means of which a fluidic connection can be produced in order to extract a fluid from a bottom section of an interior of the liquid receiving container, wherein the suction port is realized in the form of an automatically closing check valve, which allows a volume flow from the interior by applying a vacuum at the suction port, the valve blocking a volume flow in the opposite direction and being closed as long as a minimum differential pressure between the interior and an outer end of the check valve is not reached, wherein the minimum differential pressure is chosen in such a way that the valve does not open when the interior of the fluid receiving container is filled with fluid, wherein the liquid receiving container comprises an associated coupling unit which is configured for detaching the liquid receiving container from a cabin docking station, wherein the coupling unit comprises two or more cavities in the container bottom which are connectable with coupling elements protruding from the cabin docking station to provide a positive connection between the two or more cavities and the coupling elements, and wherein the container suction port is configured to produce a fluidic connection to a station suction port of the cabin docking station when the liquid receiving container is coupled by means of the associated coupling unit to the cabin docking station.