Working Principle of Packaged Mobile Toilets

Packaged mobile toilets operate based on the 'isolation - sealing - storage' mechanism, enabling the sealed collection of excrement and odor control without the need for water flushing.

1. Trigger Mechanism Initiates Isolation

When a user uses the toilet, the packing mechanism is triggered via a foot pedal or infrared sensor. At this point, the system automatically pulls a new segment of biodegradable film to cover the inner walls of the toilet bowl, forming a physical isolation layer. This process does not require water flushing; instead, it relies solely on the film's ductility to separate the excrement from the toilet bowl, preventing direct contact between the waste and the facility's surface and preparing for subsequent sealing.

2. Cutting and Heat-Sealing Achieve Sealing

After excretion is complete, the packing mechanism simultaneously performs two key actions:

• Cutting the old film: Separating the used film (along with the waste adhering to it) from the roll;
• Heat-sealing into a package: Using high-temperature heating to fuse the edges of the film, forming an independent sealed package.
  Sealing is the core advantage: Heat-sealing technology ensures that the waste is completely enclosed within the film, blocking oxygen contact, inhibiting the diffusion of odors produced by bacterial decomposition, and simultaneously avoiding the risk of soil or groundwater pollution caused by leakage from traditional septic tanks.

3. Storage and Removal Management

The sealed package falls into the storage tank below due to gravity. The tank is typically made of corrosion-resistant materials, and its capacity is designed according to the usage scenario (e.g., tourist attractions, construction sites, etc.). When the storage tank is full, it is transported in its entirety to a treatment center via specialized vehicles for harmless treatment or resource utilization (e.g., composting). The frequency of regular removal depends on the number of users and the tank's capacity. For example, high-traffic tourist attractions may require daily removal, while temporary construction sites can extend it to 3 - 5 days.

4. Technological Extended Advantages

• Water and energy conservation: No water flushing is required throughout the process, saving over 90% of water per use, making it suitable for water-scarce areas or temporary events;
• Environmentally friendly materials: The film is mostly made of biodegradable polyethylene (PE) or starch-based materials, reducing plastic pollution;
• Modular design: The facilities can be quickly assembled and disassembled, adapting to different terrains. Moreover, the storage tank is separated from the toilet compartment, facilitating maintenance.

This technology combines mechanical automation with materials science to address the issues of odor, leakage, and water usage in traditional mobile toilets, becoming an important innovation in the field of modern public sanitation.