Fengtai Foam-Sealing Mobile Toilet
The Fengtai foam-sealing mobile toilet is an environmentally friendly mobile toilet that employs source control and odor isolation technology, offering advantages such as water conservation, flexible installation, and proactive and continuous odor control.

Technical Principles and Core Functions
The core of the foam-sealing mobile toilet lies in the foam generator installed at the bottom outlet of the toilet bowl. When in use, this device automatically covers the inner walls of the toilet bowl and the liquid surface in the waste collection tank with high-density foam mixed with a small amount of water and a specialized foaming agent. This foam layer forms a physical barrier and serves three main functions:
- Odor Blocking: The foam layer isolates direct contact between waste and air, suppressing odor diffusion at the source. Compared to traditional water-flush toilets, odor control is more proactive and continuous.
- Reduced Waste Adhesion: The foam wraps around solid waste, reducing friction between the waste and the inner walls of the toilet bowl, minimizing adhesion, and lubricating the pipes to help waste slide into the tank bottom.
- Significant Water Conservation: The lubricating effect of the foam reduces the amount of flushing water required. Compared to traditional direct-flush or recirculating water-flush toilets, water savings can exceed 80%. Additionally, it does not rely on fixed sewage pipes, allowing for more flexible installation locations.
Comparative Advantages Over Other Toilet Types
- Compared to Packaging-Type Toilets: Foam-sealing technology has lower operating costs, simpler mechanical structures, and fewer maintenance points, avoiding the high consumable costs associated with frequent replacement of packaging bags in packaging-type toilets.
- Compared to Traditional Water-Flush Toilets: Foam-sealing toilets do not rely on the municipal water supply system, making them suitable for scenarios with water scarcity or no sewage pipes (such as outdoor events and temporary construction sites). Moreover, they offer superior odor control.
- Limitations: Foam-sealing technology itself does not have degradation capabilities. Collected waste still needs to be periodically transported to professional treatment facilities. However, this process can be accomplished using supporting sewage suction trucks or septic tanks, without affecting overall environmental friendliness.
Fengtai District Enterprises and Products
Several enterprises in Fengtai District produce foam-sealing mobile toilets, including:
- Beijing Yuanlin Technology Co., Ltd.: Their product model is YL-900, made of color steel plates, suitable for temperatures ranging from -30°C to 50°C. It is a foam-type water-saving toilet suitable for extreme climates.
- Beijing Yushijie Engineering Technology Co., Ltd.: They offer a series of foam-sealing ecological toilet products for applications in municipal sanitation and tourist attractions. They have served large-scale projects such as the Beijing International Horticultultural Exhibition, with mature technology and a wealth of case studies.
The foam-sealing mobile toilet balances environmental protection needs with user convenience through technological innovation, making it a typical solution for water conservation and emission reduction in public facilities.




