Mobile Toilet Internal Drainage

There are various internal drainage methods for mobile toilets, with the following being common types:

1. Conventional Water-Flush Type
   This method requires connecting to upper and lower water pipes. It triggers flushing through manual or automatic sensing devices, discharging sewage into a septic tank or municipal sewer network. Its core principle is to use gravity and water flow to flush away waste, suitable for places with sufficient water supply and access to municipal sewer networks, such as city parks and construction sites. Due to its reliance on traditional piping systems, construction costs are relatively low, but regular maintenance of the pipes is required to prevent blockages.

2. Vacuum Sewage System
   Based on the principle of negative pressure, a vacuum pump generates suction to quickly draw sewage and waste into a collection container. When the sewage in the toilet reaches a preset water level, the vacuum pump automatically starts. The entire process is efficient and uses very little water (only about 1/10 of that of conventional water-flush systems). This system is highly sealed, effectively preventing sewage leakage and odor diffusion, suitable for water-scarce areas or scenarios with high hygiene requirements, such as scenic spots and temporary event venues.

3. Water-Storage Sewage System
   Waste is flushed into a storage tank through water flushing. When the sewage reaches a preset water level, the flushing device automatically starts to complete the sewage discharge. After the storage tank is full, it needs to be manually cleaned or replaced, suitable for places with sufficient water supply and convenient transportation for cleaning, such as construction camps in remote areas. Its advantage lies in not requiring connection to the municipal sewer network, but regular maintenance of the storage tank is necessary to prevent odors and bacterial growth.

4. Microbial Degradation Device
   Specific bacterial strains are used to decompose organic matter, converting it into harmless substances such as carbon dioxide and water. The gases produced during the treatment process are filtered through activated carbon before being discharged to ensure air quality standards are met. Terminal treatment can be connected to the municipal sewer network or equipped with storage containers, suitable for ecologically sensitive areas or scenarios without upper and lower water connections, such as nature reserves and temporary exhibitions. This method is highly environmentally friendly, but requires regular replenishment of bacterial strains and monitoring of degradation efficiency.

5. Vacuum Collection System and Physical Separation Equipment
   The vacuum collection system transports waste through negative-pressure pipes, reducing water consumption, with flexible terminal treatment methods; physical separation equipment treats liquid and solid waste separately, for example, compressing solids for centralized transportation and filtering liquids before discharge. These two methods are often used in combination, suitable for places with high pedestrian density or limited space, such as transportation hubs and large event venues.

Supplementary Water-Saving Technologies: Some environmentally friendly mobile toilets adopt rainwater collection and filtration systems to purify rainwater for flushing; or use secondary utilization technology for hand-washing water to achieve water resource recycling and further reduce water consumption.