Tongzhou Container Mobile Toilet

The Tongzhou container mobile toilet is an independently operating public toilet system that integrates innovative environmental protection technologies and uses container modules as carriers. It features water and energy conservation, odorlessness, resource recycling, and flexible deployment.

1. Core Technology Principles The core technology of the Tongzhou container mobile toilet revolves around three subsystems:

• Vacuum Negative Pressure Sewage Discharge System: By maintaining a continuous low-pressure environment within the pipes, the water consumption per flush is reduced to less than one-tenth of that of traditional water-flush toilets (approximately 0.5 liters). At the same time, airflow is utilized to rapidly transport waste to a sealed collection tank. This design reduces odor diffusion at the source and reduces the volume of waste to only one-fifth of traditional methods, significantly decreasing the frequency of waste removal.
• Energy Supply System: The system adopts a "photovoltaic + energy storage" model, generating electricity through photovoltaic panels during the day and storing it in battery packs for nighttime lighting, ventilation, and system control. Some models are additionally equipped with cogeneration modules that generate electricity using methane produced by anaerobic fermentation of waste, forming a closed-loop management system of "waste-energy-treatment" and further reducing reliance on external energy sources.
• Resource Treatment System: Biological treatment toilets achieve resource utilization through a wet-dry separation mechanism. Urine is treated through membrane filtration technology and converted into irrigation water, while feces are mixed with biological agents for aerobic composting, ultimately producing organic fertilizers that meet standards for use in greening or agriculture, achieving "zero pollution discharge."

2. Modular and Flexible Advantages Based on standardized container design, the toilet can be quickly assembled, disassembled, and transported by crane, adapting to various scenario requirements. For example, during peak tourist seasons in parks or around event venues, additional modules can be added to increase service density; during off-seasons or after temporary events, the layout can be flexibly adjusted to avoid resource waste. This characteristic makes it an ideal solution for coping with fluctuations in pedestrian traffic.

3. Technology Application and Cases The vacuum toilet technology developed by Beijing Aibei Space Technology Co., Ltd. has been applied to the Tongzhou container mobile toilet, featuring:

• Extremely Low Water Consumption: Only 0.5 liters of water are needed per flush, far less than the 6-10 liters required by traditional toilets;
• Odorless Design: The combination of a sealed collection tank and negative pressure system, along with biological deodorization technology, ensures a comfortable usage environment;
• Waste Reduction: Through compression and fermentation treatment, the volume of waste is reduced by over 80%, lowering waste removal costs.

This technology has been implemented in multiple public places in Tongzhou, Beijing, such as parks and transportation hubs, effectively alleviating issues such as high water consumption, strong odors, and high maintenance costs associated with traditional toilets, providing a replicable model for urban environmental protection infrastructure construction.