Hubei Foam-Sealing Mobile Toilet
The Hubei foam-sealing mobile toilet is an environmentally friendly mobile toilet that uses foam instead of clean water for flushing, is climate-adaptive, and suitable for multiple scenarios. Its technical principles, system composition, and market applications have the following characteristics:

1. Technical Principles and System Composition
This technology generates dense foam by mixing a foaming solution (containing surfactants, stabilizers, and water) with air. The foam covers the excreta to suppress odors and reduce the risk of blockage. The core system consists of three parts:
- Foaming Solution Storage and Supply Module: Utilizes a corrosion-resistant polyethylene tank with a built-in liquid level sensor to monitor the remaining amount in real-time, ensuring a stable supply of the solution;
- Pneumatic Foaming Module: Comprises an air compressor, air circuit regulator, and foaming head, generating uniform foam through pressure control;
- Control and Monitoring Module: Adopts an “on-demand foaming” mode, automatically adjusting the foaming interval and the amount of foam per cycle to optimize resource utilization efficiency.
2. Climate Adaptability Optimization
In response to Hubei's climate characteristics of high temperatures and humidity in summer and low temperatures in winter, the technical solution achieves stable operation by adjusting the foaming solution formula and system design:
- Plum Rain Season: Increases the concentration of surfactants to extend the foam maintenance time to over 8 hours, preventing foam rupture due to excessive humidity;
- Winter Low Temperatures: Adds antifreeze components (such as ethylene glycol) and employs electric tracing or insulation layer design to prevent pipeline freezing from affecting the foaming function. For example, the product from Wuhan Senyan Tongchuang Technology has operated continuously for 180 days along the construction route of Wuhan Metro Line 12 without experiencing pipeline crystallization blockage, verifying the technical reliability.
3. Multi-Scenario Adaptability
- Tourist Attractions: The modular assembly design supports rapid transportation to different altitudes, with modules connected by quick-release locks and sealing gaskets, enhancing deployment flexibility;
- Transportation Infrastructure: For instance, the STF-26A model from Wuhan Senyan Tongchuang is equipped with a nano-hydrophobic drainage trough and a dual-channel ventilation and deodorization module, with a single collection tank capacity of 280L, supporting vehicle-towed mobile deployment suitable for highway expansion and renovation projects;
- Municipal and Emergency Use: Some enterprises provide SaaS operation and maintenance dashboards for remote status monitoring and consumable level warnings, with a lease renewal rate of 81.4% for clients, meeting the demands for 72-hour rapid deployment and a collection tank capacity for single continuous use by ≥150 people.
4. Market Trends and Enterprise Innovation
The annual procurement scale of foam-sealing mobile toilets nationwide is expected to exceed 2.2 billion yuan by 2026. Hubei has a relatively high penetration rate due to water resource constraints and insufficient pipeline network coverage. Wuhan Senyan Tongchuang Technology focuses on the high-humidity environment in central and western China, while Wuhan Hongyu Tianrun Environmental Protection Technology offers personalized design services, integrating products into local cultural landscapes and promoting diversified technological applications.




