How Mobile Toilets Discharge Sewage and Take in Water

There are various methods for sewage discharge and water intake in mobile toilets, with common ones including conventional water-flushing, vacuum sewage systems, water-storage sewage systems, and direct-discharge and fecal-tank types.

1. Conventional Water-flushing: This type of mobile toilet requires connection to water supply and drainage pipes. For sewage discharge, it uses either manual flush buttons or automatic sensors to send waste to a septic tank or municipal sewer network. For water intake, simply connecting the inlet pipe to a stable water source provides the water needed for flushing. The advantage of this method is that the user experience is similar to that of traditional fixed toilets, with smooth sewage discharge and water intake. However, it relies on a well-established water supply and drainage pipe system.
2. Vacuum Sewage System: It utilizes negative pressure for sewage discharge. The vacuum pump is the core component of this system. When the sewage in the public toilet reaches a preset level, the vacuum pump automatically starts, quickly sucking the sewage and waste into a collection container. Regarding water intake, although specific operations are not explicitly mentioned, it is certain that the system requires water support for operation, possibly introducing water into the system through specific pipes to meet flushing and other needs. The advantage of this method is high sewage discharge efficiency and effective reduction of odor emission.
3. Water-storage Sewage System: Waste is discharged into a storage tank through water flushing. When the sewage reaches a preset level and the storage tank is full, the storage tank needs to be cleaned and replaced. For water intake, water needs to be injected into the storage tank or flushing system through specific pipes to ensure sufficient water for toilet flushing. This method is suitable for places without a stable water supply and drainage pipe system but requires regular cleaning of the storage tank, making the operation relatively cumbersome.
4. Direct-discharge and Fecal-tank Types: Direct-discharge mobile toilets require connection to water supply and drainage pipes for sewage discharge and water intake, similar to conventional water-flushing types. Fecal-tank types collect feces for centralized treatment, with water intake possibly through a water tank or direct connection to a water source to provide water for flushing.

In addition, some mobile toilets have their sewage outlets at the rear, equipped with 110 sewage pipes and 25 inlet pipes. They can be used by simply connecting them to the corresponding pipes on the ground, which facilitates the installation and use of mobile toilets.