How Does a Double-Person Mobile Toilet Dispose of Sewage

There are various sewage disposal methods for double-person mobile toilets, with the following being common options:

1. Conventional Water-Flush Type This method requires connecting to water supply and drainage pipes. Sewage is discharged directly into a septic tank or municipal sewer network through manual or automatic sensing devices. It is suitable for locations with stable water supply conditions, such as city parks and construction sites. Its advantage lies in relatively low construction costs, but it relies on external water networks and sewage systems, limiting flexibility.

2. Vacuum Sewage System Using the principle of negative pressure, a vacuum pump quickly sucks sewage and waste into a sealed collection container. When the sewage reaches a preset water level, the vacuum pump automatically starts, completing the sewage disposal cycle. This method uses only one-tenth of the water of traditional water-flush systems, and its sealed design effectively prevents sewage leakage and odor diffusion. It is suitable for water-scarce areas or scenarios with high hygiene requirements, such as high-end events and scenic spots.

3. Water-Storage Sewage System Waste is flushed into a built-in water storage tank through water flushing. When the sewage reaches a preset water level, the flushing device automatically starts to dilute the waste. After the water storage tank is full, it needs to be manually cleaned or replaced. This method is suitable for locations with sufficient water sources and easy regular maintenance, such as temporary exhibitions and construction camps. Its drawback is the need for frequent cleaning, and the capacity of the water storage tank limits usage duration.

4. Water-Flush and Waterless-Flush Suction Types

   • Water-Flush Type: The toilet has a water tank at the top and a sewage tank at the bottom. Waste is flushed into the sewage tank through water.
   • Waterless-Flush Type: There is no flushing device, and excreta directly falls into the bottom sewage pool. Both methods have relatively small sewage pool capacities. When the number of users reaches a specified quantity, sewage needs to be pumped out or cleaned in a timely manner. They are suitable for short-term, small-scale usage scenarios, such as emergency rescue and field investigations.

5. Recirculating Water Perforation Type Equipped with intermittent aerobic and anaerobic fecal sewage treatment devices, it accelerates the fermentation and decomposition of fecal sewage by adding biological strains and using biofilm technology. The treated sewage is filtered and recirculated back to flush the toilet sanitary ware, achieving water reuse. This method has significant water-saving effects but requires regular maintenance of the biological treatment system. It is suitable for water-scarce areas with high environmental protection requirements, such as arid regions and ecological protection zones.

6. Dry Packaging Type There is no flushing device. Feces are collected by recyclable plastic bags at the bottom of the toilet, and a new plastic bag is automatically replaced after each use. The collected plastic bags are transported to a professional treatment plant for harmless treatment, completely eliminating the need for flushing. This method is suitable for extreme environments without water sources and sewage disposal conditions, such as deserts and plateaus, or large-scale temporary events.