Lanzhou Vehicle-mounted Mobile Toilet Installation

The installation of vehicle-mounted mobile toilets in Lanzhou requires special attention to site adaptability, modular assembly, functional system integration, environmental adaptability treatment, pre-installation inspection, and commissioning and acceptance. The specific key points are as follows:

1. Site Adaptability Assessment
Before installation, a detailed geological survey of the site is required. If the soil layer is soft, a concrete cushion should be poured or pile foundations should be set up to enhance the bearing capacity. When the site slope exceeds 5%, horizontal correction should be achieved by adjusting the supports or building a platform. The width of the surrounding access roads should meet the turning requirements of transport vehicles and lifting equipment, with a minimum operating radius of no less than 6 meters. At the same time, the positions of underground pipelines should be marked in advance to avoid construction damage.

2. Modular Assembly Sequence
The main body installation is carried out layer by layer in the spatial dimension. First, bottom anti-seepage treatment is performed, laying a polymer isolation membrane and welding the seams. Then, the load-bearing frame is installed, using bolts to ensure structural stability. The wall panels and roof are nested and fixed in the order of 'from bottom to top and from outside to inside'. Sealant should be injected at the joints of the color steel plates. The internal pipelines are pre-buried in the interlayer space, and the sewage pipes should maintain a slope of three thousandths to achieve gravity self-flow.

3. Functional System Integration

• Water Supply and Drainage System: A split-circuit layout design is adopted. The inlet pipes are divided into a toilet-flushing branch and a hand-washing branch. The drainage system prevents odor backflow through U-shaped traps.
• Ventilation System: It relies on roof non-powered wind caps and side-wall louvers to form convection, with an air exchange rate of no less than 15 times per hour.
• Electrical System: The circuits are protected by waterproof sleeves, and the switches are concentrated on splash-proof panels to ensure electrical safety.

4. Environmental Adaptability Treatment
In view of the climatic characteristics of Lanzhou: In winter, electric tracing tapes should be wrapped around the pipes to prevent freezing. In windy environments, wind-proof guy wires with a 45-degree inclination should be added at the four corners of the roof. When the sunlight is strong in the northwest region, a heat-insulating coating with a reflectivity of over 70% can be added to the outer side of the roof to reduce the indoor temperature.

5. Pre-installation Inspection
It is necessary to confirm that there are no obstructions such as silt and waste paper in the sewage pipes. Check the levelness of the toilet installation position with the ground. If it is not level, leveling should be carried out in advance. At the same time, check whether the interface dimensions of each module match to avoid rework later.

6. Commissioning and Acceptance
After installation, systematic tests are required. The water circuit pressure test should be continuously pressurized for 30 minutes, with a pressure drop of no more than 0.5%. The measured value of the electrical insulation resistance should be greater than 20 megohms. The ventilation efficiency should be verified through a smoke test, with a single air exchange time of no more than 4 minutes. Finally, simulate continuous flushing 50 times to test the durability of the mechanical components. For customized products, it is necessary to select suppliers with a design team, a fixed installation team, and after-sales service. The production cycle is usually 10-15 days, and multi-functional acceptance tests such as power-on and waterproofing should be completed before leaving the factory.