A vacuum wastewater system for an aircraft includes a collection pipe leading to a collection container, a branch pipe leading from a receptacle, and a Y-shaped pipe junction with an acute entry angle connecting the branch pipe into the collection pipe on a side thereof opposite from the receptacle. Each compressor includes a rolling piston that rotates within a cylinder to compress refrigerant. In the preferred embodiment, the transporter system includes: a high speed, inline blower a material agitator upstream of the inline blower and a planetary transmission connected to the shaft of the blower for providing a lower speed mechanical output to the material agitator.