Public Mobile Toilet Facilities

Public mobile toilet facilities are installations that can be moved as a whole and set up in fixed or temporary locations to provide toilet services to the public.

I. Basic Components
Public mobile toilet facilities typically consist of fecal sewage storage tanks (or fecal sewage treatment devices), floor slabs, sanitary fixtures, walls, washing equipment, water tanks, roofs, and mobile devices. Among them, the fecal sewage storage tank is used to collect and temporarily store excreta. Sanitary fixtures include toilets or squat pans. Washing equipment provides hand-washing functions, and mobile devices ensure the overall mobility of the toilet.

II. Classification Methods

1. By structural form: They are divided into single-structure mobile toilets and composite-structure mobile toilets. Single-structure toilets are usually independent units, suitable for scenarios with limited space or single needs. Composite-structure toilets are composed of multiple units and can meet larger-scale toilet demands.
2. By mobility method: They are divided into lifting and handling-type mobile toilets and powered and towed-type mobile toilets. Lifting-type toilets rely on lifting equipment for position adjustment, while handling-type toilets require manual or mechanical assistance for movement. Powered-type toilets are equipped with engines or motors and can move autonomously, while towed-type toilets are moved by vehicle traction.
3. By sewage treatment method: They are divided into water-flush and waterless-flush suction-type, circulating water-flush type, and dry-packing type. Water-flush toilets use clean water to flush excreta and require a water connection. Waterless-flush suction-type toilets use vacuum pumps to suck feces into storage tanks. Circulating water-flush toilets achieve water reuse through filtration and disinfection technologies. Dry-packing toilets use biodegradable plastic bags to package excreta and do not require water.

III. Origin and Characteristics
Public mobile toilet facilities originated from the temporary need for toilets in specific situations, such as large-scale events, disaster relief, or areas with insufficient urban public toilet layouts. The government deploys mobile public toilets to make up for the shortage and unreasonable layout of fixed public toilets. Their core advantages lie in mobility, allowing for rapid deployment to demand locations and repeated use; combinability, supporting the splicing of multiple units to expand capacity; and transport convenience, enabling long-distance transfer through lifting or towing methods to adapt to different scenarios.