Foreign Mobile Toilet Cleaning Methods

There are various cleaning methods for mobile toilets abroad, mainly including the following:

1. Fully Automatic Cleaning System Represented by the fully automatic cleaning toilets in the Netherlands, users need to swipe a card to trigger the cleaning process after use. When leaving, high-pressure water jets are activated indoors to flush the floor. Waste paper falls into the drainage system through permeable tiles. The toilet rotates to the cleaning room, is enclosed by a transparent glass cover, and is then cleaned with biodegradable detergent sprayed by high-pressure water jets to ensure thorough cleaning without dead spots. Finally, it undergoes drying treatment. This system reduces manual intervention through an automated process, enhancing cleaning efficiency.

2. Chemical Treatment Method By adding chemicals such as chlorine gas and sodium hydroxide to the excreta, solid-liquid separation is promoted, and microbial activity is inhibited, thereby reducing odors and the release of harmful gases. This method requires precise control of the chemical dosage, as excessive amounts can lead to secondary pollution. Therefore, professional monitoring equipment is needed. It is suitable for scenarios with high hygiene requirements but limited water resources.

3. Biological Treatment Method Using the decomposition ability of microorganisms, through a fluidized-bed anaerobic digestion reactor and a filtration system, excreta is converted into reclaimed water (usable for irrigation). This technology achieves resource recycling but requires regular maintenance of microbial activity and has a relatively long treatment cycle. It is suitable for mobile toilets used for long-term fixed purposes.

4. Flush and Non-flush Suction Types

• Flush Type: A water tank is installed at the top, and a sewage tank is configured at the bottom. It relies on water flow to flush away excreta but requires frequent suction of the sewage tank to prevent overflow.
• Non-flush Type: The excreta is directly received by the sewage tank at the bottom, which also requires regular suction. Both methods rely on external suction equipment and are suitable for areas with stable maintenance conditions.

5. Recirculating Flush Type Combining an intermittent aerobic and anaerobic treatment system and biofilm technology, the treated sewage is recirculated for flushing, significantly reducing water consumption and suction frequency. This technology ensures water quality safety through multi-stage purification and is suitable for areas with scarce water resources.

6. Dry Packing Type Biodegradable plastic bags are used to receive excreta. After use, a new bag is automatically replaced. No water is used throughout the process, avoiding the risk of sewage leakage. The plastic bags can be disposed of along with the excreta, offering high environmental protection. However, consumables need to be replenished regularly.

7. Foam Sealing Type Foam generated by a special foaming agent covers the inside of the toilet bowl, forming a sealed layer to block odors and reducing the amount of flushing water. This technology has significant water-saving effects but requires regular replenishment of the foaming agent, and the foam may be affected by temperature changes, affecting stability.

8. Microbial Type Through a solid-liquid separation device, feces and urine are treated separately: feces are decomposed into harmless substances by microorganisms, and urine is purified into reclaimed water for reuse. This technology forms an ecological cycle but requires strict control of the microbial environment and has a relatively high initial investment cost.