Types of Mobile Toilets in Beijing

There are various types of mobile toilets in Beijing, which can be classified into the following categories based on different criteria:

In terms of application scenarios, mobile toilets in Beijing can be divided into scenic area toilets, square toilets, and garden toilets. Scenic area toilets focus on harmony with the natural landscape, often adopting imitation wood grain or stone texture designs to reduce visual impact on the environment. Square toilets need to cope with high-traffic scenarios, featuring compact internal space layouts and usually being equipped with multiple toilet stalls and rapid cleaning systems. Garden toilets emphasize moisture and corrosion resistance, with material selection mainly consisting of corrosion-resistant metals or polymer composite materials, while achieving integration with the garden environment through ecological designs such as green plant coverage.

Based on mobility methods, the main types include trailer-mounted, hoist-mounted, self-propelled, portable, and powered models. Trailer-mounted toilets are connected via towing vehicles, offering high relocation efficiency and being suitable for open areas such as along Chang'an Avenue. Hoist-mounted toilets rely on lifting equipment for transportation, making them suitable for sites without road access. Self-propelled toilets are equipped with power systems for autonomous movement but come with higher costs. Portable toilets are lightweight, single-unit structures that require manual or small machinery handling. Powered toilets combine features of trailer-mounted and self-propelled models, with some models equipped with independent generators to ensure power supply. For example, during the commemorative event on September 3, 2025, tent-style toilets were used on the east side of the Great Hall of the People to handle temporary peak demand, while trailer-mounted toilets were deployed along Chang'an Avenue to improve turnover efficiency.

In terms of structural forms, they are divided into single-unit structures and composite structures. Single-unit structures are independent units that are easy to install but have limited functionality. Composite structures are composed of multiple modules and can integrate management rooms, barrier-free facilities, etc., making them suitable for large-scale events or long-term use scenarios.

Regarding sewage treatment methods, the types are even more diverse: water-flush and non-water-flush suction types require connection to municipal sewage networks and are suitable for areas with water sources. Recirculating water-flush types achieve water reuse through filtration systems, reducing water consumption. Dry-pack types seal and store waste for regular collection and removal, eliminating the need for water flushing. Foam-sealing types use foaming agents to cover the surface of waste, blocking odor diffusion and achieving a water-saving rate of over 90%. Microbial degradation types decompose waste through biological bacteria, ultimately converting it into organic fertilizer and achieving zero emissions, often used in ecologically sensitive areas.