Types of Mobile Toilets in Yan'an

The types of mobile toilets in Yan'an are mainly divided into the following four categories, covering technical characteristics, structural forms, mobility methods, and functional features:

1. Classification by Sewage Treatment Method

• Water-flush and Non-water-flush Suction Types: These toilets handle excreta through water flushing or vacuum suction technology. Some models adopt water-saving designs (e.g., vacuum technology requires only half a bottle of mineral water for a single flush), suitable for scenarios with high hygiene requirements.
• Recirculating Water-flush Type: Utilizes a recirculating water system to achieve water reuse, reducing water consumption, and is suitable for water-scarce environments or long-term fixed use scenarios.
• Dry Packaging Type: Adopts solid-liquid separation technology to convert feces into organic fertilizer or feed, and extracts enzyme proteins from urine to make water-soluble fertilizer, achieving resource utilization. This type is commonly found in ecological scenic spots or agricultural supporting projects.
• Biodegradable Type: Decomposes excreta through microorganisms, converting it into harmless fertilizer within 24 hours, combining environmental protection with economy, and is suitable for remote areas or scenarios with strict environmental requirements.

2. Classification by Structural Form

• Single-unit Mobile Toilet: Designed as an independent unit, compact in size, and easy for rapid deployment (e.g., short-term events like marathons or temporary exhibitions).
• Composite-structure Mobile Toilet: Features a modular combination design that can be expanded into multi-toilet facilities, adapting to high-traffic scenarios (e.g., long-term use demands in scenic spots or stations).

3. Classification by Mobility Method

• Hoisting and Handling Type: Relies on cranes or manual handling for position adjustment, suitable for temporary events or construction sites requiring frequent relocation.
• Powered and Trailer Type: Equipped with power devices (e.g., electric drive) or trailer structures, capable of autonomous movement or being towed by vehicles, offering higher flexibility and suitable for cross-regional use.

4. Classification by Functional Features

• Smart Type: Integrates functions such as air detection, automatic ventilation, mini-program navigation for toilet stalls, charging, and umbrella lending, enhancing user experience (e.g., models found on the streets of Shenzhen).
• Antique/Landscape Type: Features an exterior design that blends with local culture (e.g., antique wooden house models in scenic spots), balancing practicality with aesthetics.
• Special Type: Designed for extreme environments, such as corrosion-resistant armored models (for construction sites) and typhoon-resistant models (tested stable in Guangzhou's eight-level winds).
• Emergency Type: Supports rapid deployment (installation completed in two hours), suitable for disaster relief or temporary needs during large-scale events.

Local Case in Yan'an: Models provided by Cangzhou Hengtai Sanitation Equipment Co., Ltd. (e.g., htcs-258/htcs-518) use materials such as color-coated steel plates and metal carved panels, support custom processing, and are suitable for temperature ranges from -30℃ to 40℃. They feature portability, rapid installation, and low maintenance rates, and can be classified as composite-structure, dry-packaging mobile toilets, suitable for scenic spots, construction sites, and other scenarios.