Automatic Degradable Mobile Toilet

The automatic degradable mobile toilet employs microbial degradation technology to achieve harmless treatment of excreta through solid-liquid separation and microbial decomposition. It offers advantages such as water conservation, environmental protection, strong adaptability, and intelligent convenience, and has been widely used in large-scale events.

Core Working Principle

The automatic degradable mobile toilet centers on microbial degradation technology, utilizing a solid-liquid separation device to separate solids from liquids in excreta. The solid portion enters a biological fermentation and degradation tank, where it is decomposed by highly efficient microbial strains, ultimately transforming into carbon dioxide, water, and a small amount of gas. The liquid portion undergoes filtration or evaporation treatment to reduce pollution. For example, the microbial degradation eco-toilet device includes a squatting pan, a fermentation and degradation tank, a mechanical transmission device, and an electrical PLC constant temperature and humidity control device, ensuring efficient operation of the microorganisms in a suitable environment. The decomposed residues can be recycled as organic fertilizers.

Main Advantages

1. Water Conservation and Environmental Protection
   These toilets require little to no water. For instance, an eco-toilet only needs an initial one-time injection of 70-80 kilograms of water to maintain microbial activity, with no subsequent flushing required, and no need for waste removal or pollution. The carbon-neutral public toilets deployed in Chengdu in 2024 save over 3,000 tons of water annually, significantly reducing water consumption.

2. Strong Adaptability
   The toilet bodies are constructed with insulated structures such as steel-frame cement composites, with some models suitable for temperature ranges from -30℃ to 50℃, unaffected by extreme temperatures. The carbon-neutral public toilets in Chengdu, with their steel-frame structures, can operate in environments as cold as -28℃, making them suitable for high-altitude cold or high-temperature regions.

3. Intelligent and Convenient
   Integrated with intelligent systems, they feature air circulation, temperature control (such as heated toilet seats), and biological deodorization functions. The electrically controlled movable door-type squatting pans and the agitators in the fermentation and degradation tanks are all controlled by PLC for automated management.

Application Examples

• The technology was adopted in 13 venues at the 2022 Beijing Winter Olympics, with the construction cost per toilet seat being 100,000 yuan lower than that of traditional water toilets, demonstrating significant cost-effectiveness.
• The carbon-neutral public toilets deployed in Chengdu in 2024 have annual maintenance costs of only 15,000 yuan, indicating low long-term operating costs and outstanding environmental benefits.

Through technological innovation, automatic degradable mobile toilets have addressed issues such as water waste and difficult pollution treatment in traditional toilets, becoming a model of environmental protection and practicality in the field of public facilities.