Types of Mobile Public Toilets in Beijing
There are various types of mobile public toilets in Beijing, which can be mainly classified based on structural form, mobility method, sewage treatment method, as well as functional characteristics and technological perspectives.
In terms of structural form, they can be divided into single-structure mobile toilets and composite-structure mobile toilets. Single-structure mobile toilets are relatively independent and have a simpler structure; composite-structure mobile toilets are composed of multiple parts and may offer richer functions to meet usage needs in different scenarios.
Regarding mobility methods, there are lifting/handling-type mobile toilets and powered/trailer-type mobile toilets. Lifting/handling-type mobile toilets usually require external equipment, such as cranes, for movement and are suitable for scenarios that do not demand high mobility flexibility but require greater load-bearing capacity; powered/trailer-type mobile toilets have their own power or can be towed by vehicles for movement, making them more convenient and able to quickly reach designated locations.
Based on sewage treatment methods, they can be categorized into water-flush and non-water-flush suction-type mobile toilets and circulating water-flush mobile toilets. Water-flush and non-water-flush suction-type mobile toilets: the former relies on water for flushing, while the latter treats waste through suction; circulating water-flush mobile toilets can recycle flushing water, improving water resource utilization and reducing dependence on external water sources.
From the perspectives of functional characteristics and technology, the basic function of squat-type mobile toilets is to meet outdoor excretion needs. With technological evolution, their internal flushing systems use pneumatic or mechanical pressurization devices to reduce water consumption. Waste treatment incorporates biological enzyme catalysis or oxidation degradation devices. The ventilation system has evolved into active air circulation, and some integrate solar panels. They also use electronic components for status monitoring and resource allocation. "Smart micro-water-flush" water-saving public toilets adopt new technologies, achieving a water-saving rate of over 90%, with odor removal, anti-clogging, and anti-freezing capabilities. The toilet stalls are equipped with smart sensing systems for classified flushing and "low-level exhaust systems" to solve odor problems. Mobile public toilets consist of structural units, treatment units, and control units. Some are equipped with solar power supply systems and water circulation devices, using microbial degradation or compression storage methods for solid waste treatment. Smart applications are reflected in data perception and dynamic management, and emergency functions rely on modular design and rapid deployment capabilities.
