Yulin Mobile Toilet Drainage

The drainage methods of mobile toilets in Yulin vary depending on their types, mainly including water-flush drainage and fecal tank collection methods.

Water-flush Drainage Method

Water-flush mobile toilets are a typical representative of the water-flush drainage method used in Yulin's mobile toilets. These toilets flush away waste through water, achieving the purpose of drainage. Their working principle is similar to that of ordinary water-flush toilets. They are equipped with corresponding flushing devices inside the toilet. After use, the user presses the flush button, and water flushes the waste into the sewage pipeline. Some water-flush mobile toilets are connected to the city's sewer system, allowing waste to be directly discharged through the sewers, which is convenient for disposal and basically the same as the drainage method of fixed toilets, ensuring cleanliness and hygiene inside the toilet and reducing odors.

Fecal Tank Collection Method

Some mobile toilets in Yulin, such as blue single-unit mobile toilets, adopt a design with built-in water and fecal tanks. These mobile toilets do not require water and power connections during use. Their drainage is not in the true sense of being discharged into external pipelines but involves collecting waste in the built-in fecal tank. When the fecal tank is full, specialized cleaning personnel need to remove the tank and transport the waste to designated disposal sites for treatment. The advantage of this method is its high flexibility,不受水源和电源的限制（not being restricted by water and power sources, translated as: not being limited by water and power supply conditions). It can be placed in various locations without water and power access, such as some outdoor temporary event venues and remote construction sites.

In addition, mobile toilets in Yulin also have other waste disposal methods such as packing, foaming, and microbial decomposition. Packing mobile toilets seal waste with special materials; foaming mobile toilets use a foaming agent mixed with a small amount of water to generate foam, which covers the waste surface for sealing and deodorization; microbial decomposition mobile toilets decompose waste into harmless substances through the action of microorganisms. However, these methods focus more on waste treatment rather than traditional drainage but to a certain extent also solve the problems of waste disposal and hygiene in mobile toilets.