Working Principle of Mobile I Toilet

The working principle of mobile toilets can be divided into two categories based on their types: traditional water-flushing and waterless flushing, with their core mechanisms relying on water flow flushing or special technologies for waste treatment, respectively.

Traditional Water-Flushing Mobile Toilets
Their working principle is similar to that of fixed water-flushing toilets, but they achieve water supply through independent water tanks. The clean water tank is usually located at the front right of the toilet body, and the hand-washing tank is on the left. Both control water flow through valves. When in use, users first open the valve of the clean water tank to fill the toilet bowl with water, then step on the pedal to trigger the flushing device, and the water flushes the waste into the bottom fecal storage tank. Some models are equipped with a circulation filtration system that can preliminarily purify the sewage for reuse, but the fecal storage tank needs to be cleaned regularly and the clean water replenished. This type is suitable for scenarios with temporary water supply conditions and high hygiene requirements, such as large event sites or construction sites.

Waterless Flushing Mobile Toilets
These do not require traditional flushing systems and achieve waste treatment through physical, biological, or chemical technologies. Their core advantage is water conservation and adaptability to environments without water supply and drainage. Specific types include:

1. Mechanical Packaging Type: A biodegradable plastic bag is installed below the toilet bowl. After the waste falls in, a mechanical device automatically seals the bag opening and transfers it to the fecal storage tank, with no water flow involved throughout the process. The plastic bags need to be replaced regularly and are suitable for arid regions or temporary emergency scenarios.
2. Microbial Degradation Type: The fecal storage tank is filled with highly efficient microbial flora, which decompose organic matter through aerobic fermentation while generating high temperatures (60-70°C) to kill pathogens. The treated residue can be used as organic fertilizer, but the activity of the microbial flora and the ambient temperature need to be controlled.
3. Foam Sealing Type: An air pump mixes foaming liquid with air and injects it into the toilet bowl, forming a dense foam layer that covers the waste outlet. The lubricating effect allows the waste to slide into the pipe. The foam can isolate odors and reduce the amount of flushing water, but the foaming liquid needs to be replenished regularly.
4. Vacuum Suction Type: A vacuum pump creates negative pressure in the pipe, and the waste is instantly sucked into the treatment tank, similar to the principle of airplane toilets. This type has strong flushing power and uses little water, but it requires an electrically driven vacuum pump.
5. Chemical Agent Type: Chemical agents containing disinfectants and deodorizers are added to the fecal storage tank to treat the waste and inhibit odors through decomposition. The fecal storage tank needs to be cleaned regularly and the agents replenished, suitable for short-term use scenarios.

Waterless flushing mobile toilets need to comply with the GB/T18092-2000 standard, with a water-saving rate exceeding 90%. They are commonly found in scenic spots, disaster areas, or remote areas without water supply and drainage conditions. The choice of technology needs to comprehensively consider the usage scenario, maintenance costs, and environmental protection requirements.