How Much Water Can a Portable Toilet Discharge

The single flush volume of portable toilets varies depending on the type, ranging from 0.2 liters to 6 liters. They can be categorized as follows:

Traditional Water-Flush Portable Toilets
This type uses a conventional flushing system, with a single flush volume typically ranging from 3 to 6 liters. Its design principle is similar to that of a household toilet, using gravity or pressure to flush water from the tank into the toilet bowl for cleaning. Due to the lack of water-saving technology, water consumption is relatively high, making it suitable for scenarios where cost is a concern and water resources are relatively abundant.

High-Pressure Air-Water Flush Portable Toilets
By mixing high-pressure air with a small amount of water to create an impact force, these toilets achieve a cleaning effect. The single flush volume for this type is significantly reduced, approximately 0.5 to 0.65 liters. Their advantage lies in reducing water consumption while maintaining flushing force, making them suitable for public areas with high foot traffic.

Vacuum Negative Pressure Flush Portable Toilets
Using a vacuum pump to generate negative pressure, these toilets quickly suck waste from the toilet bowl into a storage tank, requiring only a small amount of water to flush the pipes. The single flush volume is typically 0.5 to 1 liter. This technology offers high cleaning efficiency and good odor control, often used in high-end events or temporary large venues.

Air-Water Flush Toilets
These toilets are designed with differentiated flush volumes for urine and feces: urine flushing uses 200 milliliters (0.2 liters) per flush, while feces flushing uses a total of 400 milliliters (0.4 liters) in two flushes, meaning the single flush volume for feces is 200 milliliters. This detailed design further optimizes water-saving effects, suitable for scenarios with strict water consumption requirements.

Liwei Environmental Protection Water-Saving Portable Toilets
Using a foot pedal valve to control the flush volume, these toilets require only 0.3 to 0.5 liters per flush. The foot pedal valve can precisely control the water flow time, avoiding waste, while its simple structure makes it easy to maintain, representing an economical water-saving solution.

Mobile Environmental Protection Public Toilets
By adding a special water-saving agent, these toilets change the surface tension of water to enhance cleaning ability. They can achieve a low water flush volume of 0.46 to 1.5 liters per person, and the agent has antibacterial and deodorizing functions, suitable for areas with scarce water resources or high environmental protection requirements.

Ultra-Low Flush Volume Water-Flush Portable Toilets
Some models have a flush volume of ≤ 1.0 liter per person. By optimizing the design of the flushing pipes and fluid dynamics, they maintain cleaning effectiveness with extremely low water consumption, representing the advanced level of current water-saving technology for portable toilets.