A waste system includes a vacuum cell, a flexible waste container, and a vacuum source. The flexible waste container may have at least one flexible membrane at an interface between the flexible waste container and the vacuum cell. The vacuum source may be configured to suction air out of the vacuum cell to generate a negative pressure in the vacuum cell. The vacuum source discharge is generally odorless as it is separated from the waste. This odorless discharge can enter occupied aircraft compartments. The negative pressure in the vacuum cell acts on the flexible waste container to generate a (second) negative pressure in the flexible waste container. The negative pressure in the flexible waste container acts on an interface between a toilet and the flexible waste container to pull waste from the toilet into the flexible waste container.

A vacuum sewage system includes a collection station, a variable speed vacuum pump, a variable speed drive, a control system, a sewage pump, a collection tank, a valve pit, a first conduit extending from the collection station to the valve pit, a second conduit extending from the valve pit and terminating in a closed end, a sensor located adjacent the closed end of the second conduit, and a valve located in the valve pit for selectively permitting sewage and waste water to flow from the valve pit toward the collection station upon activation of the valve. The control system, variable speed drive and sensor may be utilized to adjust the vacuum level and vacuum level range at the collection station so as to reduce the speed and operation time of the variable speed vacuum pump while maintaining the desired vacuum level in the vacuum sewage system.

Example lavatory waste tube connection systems and related methods are discoed herein. An example apparatus includes an extension tube to be coupled to a system waste tube and a junction box to be coupled to a surface of a vehicle lavatory. The junction box is to define a housing for the extension tube.

An accumulator for a vacuum drainage system. The accumulator includes a body having a bottom wall, sidewalls and top wall, the bottom wall, sidewalls and top walls all cooperating to define a reservoir within the body. A first inlet port and a first outlet port are provided toward a first end of the body, and a second inlet port and a second outlet port are provided toward a second end of the body. The first and second inlet ports respectively define first and second inlet openings into the reservoir, and the first and second outlet ports respectively define first and second outlet openings from the reservoir.

An inline vortex demister for removing moisture from an air stream is disclosed. In embodiments, the inline vortex demister includes one or more vortex-inducing structures disposed within a tube. In embodiments, the one or more vortex-inducing structures are configured to induce an air stream with a first moisture content into a vortex flow pattern in order to remove a first volume of moisture from the air stream by causing the first volume of moisture to adsorb to an inner tube surface of the tube. In additional embodiments, the inline vortex demister includes a demister element disposed within the tube, wherein the demister element is configured to remove a second volume of moisture from the air stream.

A waste system is disclosed. In some embodiments, the waste system includes a vacuum cell, a flexible waste container, and a vacuum source. The flexible waste container may have at least one flexible membrane at an interface between the flexible waste container and the vacuum cell. The vacuum source may be configured to suction air out of the vacuum cell to generate a negative pressure in the vacuum cell. The vacuum source discharge is generally odorless as it is separated from the waste. This odorless discharge can enter occupied aircraft compartments. The negative pressure in the vacuum cell acts on the flexible waste container to generate a (second) negative pressure in the flexible waste container. The negative pressure in the flexible waste container acts on an interface between a toilet and the flexible waste container to pull waste from the toilet into the flexible waste container.

A system for waste system pressure management is disclosed. In one or more embodiments, the system includes an electronically controlled valve and a controller communicatively coupled to the electronically controlled valve. The electronically controlled valve is coupled to a suction path of an aircraft waste system. The controller is configured to determine a pressure differential between an aircraft cabin and a vacuum source for the suction path. The controller is further configured to generate one or more signals to actuate the electronically controlled valve from a first position to a second position to regulate a pressure in the suction path when the pressure differential between the aircraft cabin and the vacuum source exceeds a threshold pressure differential. In embodiments, the electronically controlled valve is configured to allow more airflow through the electronically controlled valve in the second position than in the first position.

Waste transfer system for a toilet of a public transport vehicle that discharges into an on-board waste aerated storage tank, comprising a waste intermediate tank (1), means for generating negative or positive pressure inside said waste intermediate tank (1), and a discharge valve means (3,5,6,7) to regulate the flow through a first waste passage (8) between a toilet bowl (2) and said waste intermediate tank (1) and through a second waste passage (11) between said waste intermediate tank (1) and said waste storage tank, characterized in that said discharge valve means comprise a multi-port discharge valve (3) connectable to an inlet/outlet port (4) of the waste intermediate tank (1), said multi-port discharge valve (3) being configured to provide, in a first working position, direct communication between said toilet bowl (2) and said waste intermediate tank (1) when negative pressure is supplied inside said waste intermediate tank (1) and to provide, in a second working position, direct communication between the waste intermediate tank (1) and the waste storage tank when positive pressure is supplied in the said waste intermediate tank (1).

A marine waste water dump control system for noncommercial nonmetallic or fiberglass boats that provides a system and process for automatically monitoring the time, exact location, and quantity of blackwater, greywater or bilgewater (marine water waste) is dumped from such a water vessel and for requesting and receiving approval or disapproval for dumping marine water waste into restricted or unrestricted waters, including oil water and the like. The instant invention has an MS (Automatic Information System) or comparable communication system that operates at approximately 160 MHz for determining the exact distance from shore and communicating with marine authorities, such as the Coast Guard, before activating the dump control system and communication. The dump control system of the instant invention automatically stores all dumping related information in memory for access by authorities at any time in the event a vessel does not include an AIS or a working AIS. The instant invention also determines from existing shoreline beacons and a triangulation method the exact distance a water vessel is from the shore. The system may be applied to any and all holding tanks on a marine vessel containing pollutants such as black water, gray water, bilge water, oil water and the like.

Provided is a urine-feces separation toilet bowl including a urine and feces separator configured to separate urine and feces and use them to generate renewable energy. The urine-feces separation toilet bowl includes: a main body portion configured to accommodate excreta; a cover portion having a plate shape, having a first surface and a second surface, and provided on the main body portion, the first surface being arranged towards the inside of the main body portion; a toilet seat portion between the main body portion and the cover portion; an excreta accommodation portion including a first accommodation portion configured to accommodate urine and a second accommodation portion configured to accommodate feces; and an excreta separator between the first accommodation portion and the second accommodation portion and configured to separate the first accommodation portion and the second accommodation portion.