A side-opening sleeve valve having an inner cylindrical barrel with a shaped opening through the wall, an outer cylindrical barrel having shaped opening through the wall, where the barrels are co-annular and rotatable, and a means for rotating the inner barrel relative to the outer barrel between a first open position where the shaped openings overlap to form a side opening into the sleeve valve, and a second closed position where the shaped openings do not overlap. A side-opening valve is used in pigging fluid flush system for a water-less toilet, where a toilet bowl empties into the side opening of the side-opening valve when opened. When the side-opening valve is closed, a pig cleaning system pushes the waste in the side-opening valve to a sewage system.

A side-opening sleeve valve having an inner cylindrical barrel with a shaped opening through the wall, an outer cylindrical barrel having shaped opening through the wall, where the barrels are co-annular and rotatable, and a means for rotating the inner barrel relative to the outer barrel between a first open position where the shaped openings overlap to form a side opening into the sleeve valve, and a second closed position where the shaped openings do not overlap. A side-opening valve is used in pigging fluid flush system for a water-less toilet, where a toilet bowl empties into the side opening of the side-opening valve when opened. When the side-opening valve is closed, a pig cleaning system pushes the waste in the side-opening valve to a sewage system.

A self-contained, oil flush medium toilet system is provided having a largely rectangular enclosure that separates the flush medium from collected waste and preprocesses the waste for subsequent removal. The device requires no connection to sewage or water lines, and can be installed with only electrical connections for continual operation. Waste is first received through a toilet bowl, whereafter it is consumed by the oil and falls under the surface thereof. The waste is then circulated below the oil, whereby it is continually aerated to promote aerobic digestion of the waste until it reaches a certain volume, where the processed waste exits the enclosure for further processing or storage. The oil flush medium is pumped through a particulate and carbon filter to maintain its condition, wherein the oil is immiscible with the waste to first consume it and remain above the waste within the enclosure during operation.

A self-contained, oil flush medium toilet system is provided having a largely rectangular enclosure that separates the flush medium from collected waste and preprocesses the waste for subsequent removal. The device requires no connection to sewage or water lines, and can be installed with only electrical connections for continual operation. Waste is first received through a toilet bowl, whereafter it is consumed by the oil and falls under the surface thereof. The waste is then circulated below the oil, whereby it is continually aerated to promote aerobic digestion of the waste until it reaches a certain volume, where the processed waste exits the enclosure for further processing or storage. The oil flush medium is pumped through a particulate and carbon filter to maintain its condition, wherein the oil is immiscible with the waste to first consume it and remain above the waste within the enclosure during operation.

A toilet bowl includes a main body defining a urine and feces transfer passage; and a collection member arranged in a first direction from the main body, wherein the main body comprises a urine and feces transfer surface and a urine and feces separation surface arranged in the first direction, wherein the urine and feces separation surface extends along a circumference of the urine and feces transfer passage, and separates mixed urine and feces transferred from the urine and feces transfer surface into liquid urine and feces and solid urine and feces, and wherein the collection member accommodates each of the liquid urine and feces and the solid urine and feces.

Waste collection and processing systems for use in low-gravity environments include a toilet having a bowl and a lid, the toilet configured to receive solid human waste; a liquid waste collection system comprising a liquid waste receptacle configured to receive liquid human waste; a first waste tank fluidly coupled to the toilet; a second waste tank fluidly coupled to the liquid waste collection system; a third waste tank fluidly coupled to the liquid waste collection system, wherein the first waste tank, the second waste tank, and the third waste tank are each configured to be operated between reclamation modes of operation and collection modes of operation; and a waste outlet configured to selectively receive an airflow from each of the first waste tank, the second waste tank, and the third waste tank.

Waste collection and processing systems for use in low-gravity environments include a toilet having a bowl and a lid, the toilet configured to receive solid human waste; a liquid waste collection system comprising a liquid waste receptacle configured to receive liquid human waste; a first waste tank fluidly coupled to the toilet; a second waste tank fluidly coupled to the liquid waste collection system; a third waste tank fluidly coupled to the liquid waste collection system, wherein the first waste tank, the second waste tank, and the third waste tank are each configured to be operated between reclamation modes of operation and collection modes of operation; and a waste outlet configured to selectively receive an airflow from each of the first waste tank, the second waste tank, and the third waste tank.

An improved portable toilet comprises one or more of a flushing mechanism, a urinal flushing mechanism, a solid/liquid separation system, and/or a door opening mechanism.

An improved portable toilet comprises one or more of a flushing mechanism, a urinal flushing mechanism, a solid/liquid separation system, and/or a door opening mechanism.

Waste collection and processing systems for use in low-gravity environments include a toilet having a bowl and a lid; a first waste tank having an inlet and an outlet, with the bowl of the toilet selectively fluidly coupled to the inlet of the first waste tank; a second waste tank having an inlet and an outlet, with the bowl of the toilet is selectively fluidly coupled to the inlet of the second waste tank; a controller configured to selectively operate each of the first waste tank and the second waste tank between reclamation modes of operation and collection modes of operation. When the first waste tank is operated in the reclamation mode of operation the second waste tank is operated in the collection mode of operation and vice versa.