Mobile Toilet Foam Flushing

Mobile toilet foam flushing is a water-saving and environmentally friendly technology that utilizes low-water-content foam to achieve fecal flushing and odor blocking. Its core principles, system composition, and advantages are as follows:

Core Mechanism

After the foaming liquid is mixed with air through a pneumatic device, foam with a volume expansion ratio of 20-30 times is generated. A small amount of foaming liquid can cover the surface of the excrement, forming a dense foam layer:

• Sealing and Odor Control: The foam layer isolates air, suppresses the spread of odors, reduces the contact between waste and air, and lowers the risk of bacterial growth.
• Lubrication and Anti-clogging: The foam forms a lubricating film on the inner wall of the pipeline, reducing the adhesion of solids, lowering the probability of clogging, and extending the service life of the equipment.
• Water-saving and Efficiency: The water consumption per person is only about 0.04 liters, far lower than that of traditional flushing toilets (6-12 liters), with a water-saving rate exceeding 99% (after the integration of a fecal biochemical processor with waterless foaming technology in 2024).

System Composition

1. Foaming Liquid Storage and Supply Module

   • It adopts a corrosion-resistant polyethylene tank with a built-in liquid level sensor to monitor the remaining amount in real-time, preventing system failure due to insufficient foaming liquid.
   • The tank design needs to be adapted to climatic conditions. For example, in Hubei, the foam stability needs to be improved in summer, and antifreeze components should be added with an insulation structure in winter.

2. Pneumatic Foaming Module

   • It includes an air compressor, an air circuit regulating valve, and a foaming head: The air compressor provides high-pressure airflow, the regulating valve controls the gas-liquid ratio, and the foaming head converts the mixed liquid into uniform foam.
   • The design of the foaming head affects the foam quality. It is necessary to ensure that the foam is fine and long-lasting to maintain the sealing and lubricating effects.

3. Control and Monitoring Module

   • It senses usage actions through infrared or mechanical sensors, triggers the "on-demand foaming" program, and automatically adjusts the foaming interval and the amount of foaming per time.
   • It integrates an intelligent monitoring system that can record data such as usage frequency and foaming liquid consumption to optimize maintenance plans.

Technical Advantages

• Environmental Protection and Energy Efficiency: The daily power consumption does not exceed 0.2 degrees. When combined with waterless foaming technology, it can achieve zero drainage and is suitable for areas without municipal pipe networks (such as scenic spots and construction sites).
• Strong Adaptability: It has a wide operating temperature range (-40°C to 50°C). By adjusting the foaming liquid formula and equipment insulation design, it can cope with extreme climates.
• Convenient Maintenance: The modular design facilitates quick replacement of components, and lightweight building materials (such as aluminum alloy frames) reduce transportation and installation costs.

Application Scenarios

This technology is especially suitable for places with scarce water resources or lacking drainage facilities, such as remote scenic spots, temporary construction sites, and disaster relief sites. In 2024, patented technology further expanded its application boundaries by using microorganisms to decompose feces and build a circulating water system, achieving a "zero-emission" ecological closed loop.