Usage of Single-Person Portable Toilets

A single-person portable toilet is an independent sanitation facility designed based on a closed-loop circulation principle, suitable for scenarios without external water and electricity connections. It processes waste through biodegradation, chemical solidification, or circulation filtration, and is equipped with a ventilation system to prevent odor diffusion.

Structure and Operating Principle

The main body of a single-person portable toilet is a lightweight, independent box that contains a toilet seat, a handwashing device, and storage containers. Its core operation relies on a closed-loop circulation system: after waste enters the storage container, some models use biodegradable materials (such as wood chips and microbial agents) to decompose organic matter, while others employ chemical coagulants (such as superabsorbent polymers) to solidify feces. Liquids are separated through multiple filtration layers (such as activated carbon and fiber membranes), with the solid portion being sealed for storage. The ventilation system achieves air exchange through a top-mounted activated carbon filtration device, effectively suppressing odor diffusion. In terms of energy supply, solar panels or batteries power the control system, ensuring normal operation even without an external power source.

Common Waste Treatment Methods

1. Storage Type: Equipped with a large-capacity fecal storage tank inside, it uses chemical or biological reagents to decompose waste and eliminate odors. The structure is simple, but regular collection and disposal of the fecal storage tank and replacement of deodorizing liquids are required, making it suitable for short-term, low-frequency use scenarios.
2. Recirculating Flush Type: It provides flushing water through a small water tank, which is reused 3-5 times after physical filtration (such as sand filtration and membrane filtration). It is more water-efficient than the storage type but requires regular cleaning of the filtration device and has a slightly more complex structure.
3. Dry/Composting Type (Composting): By adding auxiliary materials such as wood chips and rice husks, it promotes natural decomposition, converting feces into harmless compost. It stands out for its environmental friendliness but requires control of temperature, humidity, and ventilation conditions, with a relatively strict management process.

Typical Application Scenarios

• Public Health Sector: Placement in crowded venues (such as music festivals and sports events) can reduce surface pollutant concentrations and the risk of intestinal infectious diseases spreading through the fecal-oral route. After installation in temporary gathering areas, the total bacterial count in the surrounding area decreases by more than 70% compared to open-air toilet areas.
• Areas Without Fixed Facilities: The independent treatment system prevents sewage leakage from contaminating soil and groundwater, making it suitable for remote areas and post-disaster reconstruction scenarios.
• Urban Management Supplement: As supplementary nodes to fixed public toilets, they address toilet demands during peak hours or in service blind spots (such as old residential areas and commercial streets).
• Outdoor Work Sites: Long-term fieldwork sites such as communication base station maintenance and forestry patrols use long-lasting portable toilets equipped with large-capacity fecal storage tanks and solar power supply systems to meet long-term use requirements.
• Disaster Medicine Monitoring: Some models integrate pathogen detection modules that can collect waste samples in real-time, providing front-end data for public health warnings and assisting in early epidemic monitoring.