Customization of Hezhang Mobile Environmental Toilets

Customizing mobile environmental toilets in Hezhang requires consideration of multiple factors, including technical routes, structural design, functional configurations, and environmental adaptability. Below are the specific key points:

I. Technical Route Selection
The core of mobile environmental toilets lies in the excreta treatment technology, with two common solutions:

1. Biological Treatment Type: This method decomposes excreta through a sealed fermentation chamber, utilizing aerobic bacteria under controlled temperature and humidity conditions to convert excreta into carbon dioxide, water vapor, and a small amount of solid residue (approximately 10% of the original volume). An electronic control system monitors gas composition in real-time to ensure treatment efficiency. The solid residue needs to be periodically extracted by specialized vehicles and sent to treatment plants for composting or incineration.
2. Circulating Flush Type: This approach relies on physical separation and chemical treatment, equipped with a clean water tank and a wastewater tank. The flush water is filtered of impurities through membrane separation technology and then sterilized by a UV disinfection unit before being reused. The membrane components require regular replacement, and there are restrictions on the use of detergents. When the wastewater tank is full, it is transported to the municipal sewer network by a suction truck, with some solutions incorporating liquid level sensors to indicate when emptying is required.

II. Internal Structure and Materials

1. Functional Zoning: The toilet body is divided into a functional compartment (housing the toilet, sink, and ventilation fan) and an equipment compartment (housing the water tank, control board, and energy storage battery). The top is often equipped with a photovoltaic canopy to utilize solar power for electricity, reducing energy consumption.
2. Material Selection: The main body of the toilet is made of galvanized steel plate, coated with fluorocarbon paint for both corrosion resistance and aesthetic appeal. The bottom fecal collection tray is designed with a slope (usually ≥5°) to ensure the natural flow of solid-liquid mixtures to the treatment unit, preventing blockages.

III. Ventilation and Odor Control System
The exhaust duct is fitted with an activated carbon filter, and a louvered air inlet is installed at the bottom of the toilet door to create a slightly negative pressure environment, forcibly extracting odors and purifying them through the filter. Some high-end models incorporate negative ion generators to further decompose odor molecules, enhancing the user experience.

IV. Winter Anti-Freezing Measures
For low-temperature environments, the pipeline beneath the sink is wrapped with an electric tracing tape and covered with rubber-plastic insulation cotton. When the temperature drops below 5°C, a thermostat automatically activates the heating circuit to prevent pipeline freezing. The toilet flushing system can be equipped with anti-freezing solenoid valves to ensure normal operation in low temperatures.

V. Customization Requirements
During customization, specifications can be adjusted according to the usage scenario, such as adding landscape-oriented exterior designs for scenic area toilets or reinforcing structural strength for construction site toilets. Additionally, intelligent monitoring systems (such as remote liquid level alarms and energy consumption statistics) and humanized designs (such as barrier-free access and baby changing stations) can be integrated as needed.