Abstract: A sewage tank comprising an outer shell of plywood which includes a platform for supporting a toilet pan. An inner lining of a compressible plastic material lines the interior of the outer shell and defines a hollow interior region of variable volume for a bladder for storing sewage. The inner lining accommodates expansion and contraction of the bladder in the event of freezing and thawing of the contents thereof. The contents of the toilet pan are discharged into the bladder, and sewage is discharged from the bladder under pressure through a discharge pipe.

Abstract: The Specification concerns a refuse disposal system in which a refuse compacting unit located adjacent a wall of a building has a refuse input accessible from inside the building and a refuse output accessible from outside the building for discharging compacted refuse into a removable container.In order to permit a high degree of freedom in the placement of the container the unit is mounted on wheels for mobility and is located in an aperture in the wall, the aperture being substantially wider than the unit. The unit is disposed between a pair of sliding doors mounted for movement parallel to the wall, the doors being coupled to opposite sides of the unit by upwarding directed rollers on the doors engaging inverted channels along opposite sides of the unit.