Vacuum Toilet

The basic principle behind a **vacuum toilet** system is using of differences in air pressure to transport materials from toilets. **The vacuum pump generates vacuum directly in the piping system**. The entire piping system is kept at a constant vacuum level.



After a button/switch pushing a toilet is flushed, a valve in the toilet opens. The water and the air is sucked into the piping system because of the vacuum present in the piping. During the transport through the vacuum piping, the slug is affected by gravity and flattens out after a time. Slugs have to be re-formed in the piping. Vacuum is generated by one or more vacuum pumps. Black water is macerated and pumped to a sewage treatment plant or a collecting tank.