Customization of Movable Toilets in Hubei

The customization of movable toilets in Hubei requires systematic design that integrates technological adaptation, environmental parameters, and scenario-specific needs. Foam-flush movable toilets are a common choice, with customization covering core system optimization, climate adaptability adjustments, and material-purpose matching.

I. Core System Customization for Foam-Flush Movable Toilets

Foam-flush toilets generate foam by mixing foam solution with air to replace water for flushing. Their core system consists of three parts:

1. Foam Solution Storage and Supply Module: Utilizes a corrosion-resistant polyethylene tank with a built-in liquid level sensor to monitor the remaining volume in real-time, ensuring continuous supply. The tank must be sealed to prevent contamination and equipped with a refilling port for easy maintenance.
2. Pneumatic Foaming Module: Includes an air compressor, air circuit regulator, and foaming head. The compressor provides stable air pressure, the regulator controls foam density, and the foaming head uniformly sprays foam through a porous structure, covering the surface of excreta to form a seal.
3. Control and Monitoring Module: Automatically adjusts the foaming interval and single-dose amount based on usage frequency. For example, during peak tourist seasons, the foaming interval is shortened to maintain hygiene, while during off-peak seasons, the foaming frequency is reduced to conserve resources. The module integrates fault alarm functions, triggering alerts when the liquid level is too low or air pressure is abnormal.

II. Climate Adaptability Technology Adjustments

The climatic characteristics of Hubei pose special requirements for the performance of foam solution and equipment structure:

• High Humidity During the Rainy Season: Foam stability must be enhanced by adjusting the foam solution formula (e.g., increasing the concentration of surfactants) or optimizing the foaming head structure (e.g., reducing pore size) to reduce the risk of foam rupture.
• Low Temperatures in Winter: The foam solution must include antifreeze components (e.g., ethylene glycol), while pipes and storage tanks should be equipped with electric tracing or insulation layers to prevent liquid freezing and system failure. For example, in high-altitude scenic areas like Shennongjia, the electric tracing power must be calculated based on the minimum temperature to ensure normal foaming below -10°C.

III. Scenario-Specific Structural and Material Selection

1. Mountainous Tourist Attractions: Toilets require frequent relocation, necessitating a modular assembly design. Each module (e.g., base, walls, roof) is connected via quick-release locks and seals, allowing for single-person assembly and disassembly. For example, the customized toilets in Enshi Grand Canyon use an aluminum alloy frame, which is 30% lighter than steel, facilitating helicopter transportation.
2. Material Options: Choose from stainless steel (corrosion-resistant but costly), aluminum-plastic panels (lightweight and moisture-resistant), color-coated steel (cost-effective), or steel structures (high load-bearing capacity) based on budget and durability requirements. For example, public toilets in Wuhan urban parks often use color-coated steel sandwich panels, balancing cost and thermal insulation performance.
3. Container-Type Customization: For instance, the 9m × 3m × 3.2m container toilet designed by Boxus features a high-density galvanized steel frame and thickened galvanized steel panels for the exterior walls and roof. The entire unit is prefabricated in a factory and only requires water and electricity connections on-site, making it suitable for temporary large-scale events or post-disaster reconstruction scenarios.