Principle of Indoor Mobile Toilets

The principles of indoor mobile toilets vary depending on their type, primarily revolving around three core technologies: sealing and leak prevention, odor control, and waste treatment. Here are the specific classifications and their principles:

1. Mini Flush Toilet Type
This type mimics the working mode of traditional flush toilets but employs an independent closed system. Its core components include a freshwater tank, a wastewater tank, and a flushing device. During use, a small amount of water (usually 2-5 liters) is drawn from the freshwater tank via a manual pump or electric button to complete the flushing, with waste directly entering the sealed wastewater tank below. The inner wall of the wastewater tank is made of smooth, anti-stick material to reduce residue, and it is equipped with a liquid level sensor or observation window for timely cleaning. Some high-end models also feature ultraviolet sterilization lamps to inhibit bacterial growth.

2. Bag-Equipped Bucket Toilet Type
This type relies on physical sealing and chemical solidification as its core principles. The toilet body is a sealed bucket with a lid, lined with a special degradable bag pre-filled with superabsorbent resin or coagulant. When waste contacts the bag, the liquid is rapidly absorbed and converted into a gel-like solid, while solid waste is wrapped and isolated, effectively blocking odor diffusion. Some products adopt a double-layer bag design, with the outer layer made of biodegradable material and the inner layer a leak-proof coating, allowing for direct sealing and disposal or composting after use.

3. Biodegradable Toilet Type
This type achieves waste harmlessness through microbial metabolism. The tank is filled with organic carriers such as sawdust or coconut coir and inoculated with specific bacteria (e.g., Bacillus, Actinomycetes). When waste enters, the bacteria undergo aerobic fermentation under suitable temperature (20-40°C) and humidity conditions, decomposing organic matter into carbon dioxide, water, and humus. Some models are equipped with a stirring device to accelerate decomposition and further purify the emitted gas through an activated carbon filter layer, with the final product usable as flower fertilizer.

4. Foldable Portable Toilet Type
This type adopts a lightweight design, with a collapsible metal frame as the main body and a waterproof canvas seat ring. It uses a disposable plastic bag inside, filled with curing agent powder (mainly composed of calcium sulfate or diatomaceous earth). When waste falls in, the curing agent rapidly absorbs moisture and solidifies, forming a non-flowing block to prevent side leakage and odor. After use, simply tie the bag tightly and discard it, with the frame and seat ring collapsible to the size of an A4 sheet for easy portability.

All types ensure functionality through the following common technologies:

• Sealing and Leak Prevention: High-strength plastic or silicone seals, combined with double-snap designs, ensure no leakage at connections;
• Odor Control: A combination of physical sealing, activated carbon adsorption, biodegradation, or chemical neutralization (e.g., citric acid) technologies;
• Waste Treatment: Non-flush toilets are equipped with curing agents or degradable materials to achieve waste reduction and stabilization.