A filter device for sewage treatment, the device comprising a housing compartment with a removable cover, an inlet before the housing compartment, a first valve before the housing compartment, and an outlet after the housing compartment. The housing compartment is provided with a filter, a by-pass passage having an inlet at the housing compartment, and an outlet after the housing compartment and after the second valve, the by-pass drainage passage being provided with a valve between the inlet and the outlet.

A drainage system for an aircraft is taught herein. The drainage system includes a drain tube defining an orifice. The drainage system further includes a cover movable between a first cover position and a second cover position. The cover is configured to overlay the orifice when the cover is in the first cover position. The cover is configured to expose the orifice when the cover is in the second cover position. The cover is configured to move between the first cover position and the second cover position in the presence of air pressure.

A wastewater management system 10 includes a black water tank 12 for holding black wastewater and a grey water tank 14 for holding grey wastewater. The system 10 may additionally include a filter 62 for filtering suspended solids from the grey water; a first conduit 64 between the grey water tank 14 and the filter 62; a second conduit 66 between the filter 62 and a toilet 22, and a third conduit 68 between the filter 68 and the black water tank 12, the third conduit 68 associated with a valve 26; and a fourth conduit 69 between the filter 62 and the grey water tank 14, the fourth conduit 69 associated with the valve 26. The system 10 further includes a control sub-system 38 in communication with the valves 26 for controlling valves 26 to deliver filtered grey water to the toilet 22 for flush and to periodically clean the filter 62 of captured solids and deliver the captured solids to the black water tank 12. A related method for managing wastewater within a recreational vehicles with the wastewater management system 10, an apparatus for delivering wastewater from a recreational vehicles to a drain and an additive sub-system 54 for wastewater management system of a vehicle are also provided. Further, the present teachings relate to a system 10 including a housing associated with a toilet 22, the housing including a valve and a macerator pumping arrangement 34 including a macerator 34a and a pump 34b that work independently from one another, the macerator 34a including a plurality of macerating knives 37 driven by a first motor 35a, the pump 34b providing positive pressure, the macerator pumping arrangement 34 is operative in a macerating mode and a pumping mode, such that the first motor 35a first drives the macerating knives 37 to macerate the waste and subsequently, the pump 34b pumps the waste out of the housing 34a.

A toilet device for a rail vehicle includes flushing water-carrying installations and wastewater-carrying installations. The flushing water-carrying installations include an intermediate reservoir for storing flushing water and a supply line for supplying the intermediate reservoir with flushing water. The supply line includes a filter for filtering the flushing water supplied to the intermediate reservoir. The supply line is connected to the intermediate reservoir such that flushing water from the intermediate reservoir can be returned through the filter. A backflushing line is connected to the filter and opens into a wastewater-carrying installation. A method for operating the toilet device includes supplying the flushing water through a filter to fill the intermediate reservoir, and flushing a flushable bowl with flushing water from the intermediate reservoir or backflushing the filter with flushing water from the intermediate reservoir and draining off the flushing water to a wastewater-carrying installation.

A rail vehicle has a internal tank installed. A connection opening is provided on a base of the tank into which a tank closure can be inserted from the outside of the tank. The tank closure is mounted on an inner side of an unfolding, sack-shaped container, and an edge of the sack-shaped container is attached to a shaft which lies beneath the tank, in the base of the rail vehicle.

The invention relates to a mobile sanitary device, in particular for a rail vehicle, comprising a vacuum toilet, a flush button, a power supply, a control device, and a control unit. In particular, the invention relates to a mobile sanitary device comprising a vacuum toilet, a flush button, a power supply, a control device, and a control unit, the control unit comprising a standard circuit board for routing signals, having a standard interface comprising a vacuum toilet connecting means for connecting a vacuum toilet, a flush button connecting means for connecting a flush button, and a power supply connecting means for connecting a power supply, a configuration circuit board comprising a configuration interface having a first configuration connection means, wherein the vacuum toilet connection means, the flush button connection means, the power supply connection means, and the first configuration connection means are conductively coupled to each other, wherein the configuration interface is arranged such that the configuration circuit board is coupled to a control device, and at least one signal carried by the standard circuit board and/or by the configuration circuit board can be tapped, processed and/or driven by the control device.

A bioreactor cleaning system for cleaning a bioreactor in a rail vehicle, comprising a first suction connection, a second suction connection, a flushing connection, an acid tank, a collection tank for receiving liquid drawn out of the bioreactor, a fresh water connection, a pump with a first pump connection and a second pump connection, and a measuring unit for measuring liquid. By means of the pump liquid can be pumped from the first suction connection optionally into the measuring unit, into the collection tank or into the acid tank, aqueous acid solution can be pumped from the acid tank to the second suction connection and/or to the flushing connection; fresh water can be pumped from the fresh water connection selectively to the flushing connection or the measuring unit; and liquid can be pumped from the measuring unit either to the collection tank or to the second suction connection.

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.