Shiyan Packaged Mobile Toilet

The Shiyan packaged mobile toilet is an environmentally friendly mobile toilet that does not rely on external sewage pipes and processes waste through an independent closed-loop unit. Its core principles, workflow, material characteristics, cost structure, and environmental adaptability are as follows:

Core Principles and Workflow
This toilet transforms the sewage system of traditional fixed toilets into an independent closed unit, operating through mechanical structures and chemical treatment mechanisms. The workflow consists of three steps:

1. Collection: Standard sit-down or squat toilets are used, connected below to replaceable plastic packing bags;
2. Sealing: During flushing, mechanical rollers automatically tighten the opening of the packing bag, encapsulating waste and a small amount of water (only 0.5-1 liters per flush) into an independent sealed bag, preventing contact with the toilet's internal structure;
3. Storage: The sealed bag falls into a storage box, with capacity varying by model, typically accommodating dozens to hundreds of packing bags.

Materials and Environmentally Friendly Design
The packing bags are made of a composite material combining high-density polyethylene and biodegradable additives, with a thickness of 0.03-0.05 millimeters, balancing tensile strength and biodegradability. The storage box is equipped with an activated carbon filtration device to adsorb trace gas molecules that may seep from the bag's surface, requiring regular replacement of the filter material to maintain air quality.

Cost Structure
Rental costs consist of three parts:

1. Basic Rental Fee: Charged daily or weekly, covering the right to use the toilet unit;
2. Packing Bag Consumables Fee: Calculated based on estimated usage, with a cost of approximately 0.3-0.8 yuan per person per use;
3. Transportation and Cleaning Fee: Linked to distance and disposal volume.
   Users need to specify the frequency of packing bag replacement in the contract, typically requiring replacement after every 50-80 uses.

Environmental Adaptability

1. Low-Temperature Scenarios: In winter, packing bags with antifreeze additives are used to prevent reduced flexibility due to low temperatures;
2. High-Temperature Scenarios: In summer, the internal temperature of the storage box may exceed 40°C, reducing the adsorption efficiency of activated carbon by 15%-20%, necessitating more frequent replacement of the filter material;
3. Water-Restricted Scenarios: Only 0.5-1 liters of water are needed per flush, far less than the 6-13 liters required by traditional water-flush toilets, making it suitable for mountainous areas in Shiyan or during dry seasons.

Rental Services and Prices
Rental services in the Shiyan area are provided by merchants such as Yibingsi Environmental Protection and Shanghai Changjiu Environmental Protection Technology Co., Ltd. Prices vary by model and configuration, for example, the custom rental price for a vehicle-mounted trailer-type mobile toilet is 2300 yuan per unit, while the custom rental price for a scenic area finished waterless packing environmental protection restroom container mobile toilet is 2800 yuan per unit.