Installation of Mobile Ecological Toilets in Qinghai
The installation of mobile ecological toilets in Qinghai requires consideration of environmental characteristics such as high altitude, strong ultraviolet radiation, and large temperature variations, achieving stable operation through adaptive design, modular construction, and intelligent integration.
I. Environmental Assessment Before Installation
It is necessary to systematically analyze surface load-bearing capacity, permafrost depth, and seasonal wind variations. For example, the Qaidam Basin must ensure a wind resistance rating of ≥10, while the Sanjiangyuan region must meet cold resistance requirements of -30℃, with an altitude adaptation range covering 3000-4500m. Geological conditions determine the foundation type: screw pile foundations are preferred in permafrost areas, while concrete strip foundations are chosen in soft soil zones to ensure structural stability under freeze-thaw cycles.
II. Main Structure and Assembly
The main materials are polyurethane sandwich color steel plates or rock wool sandwich stainless steel plates, balancing lightweight properties with thermal insulation. Modules are connected using high-strength galvanized bolts, with sealing gaskets providing both rigid fixation and flexible cushioning. Electrical wiring and water supply/drainage pipes use quick-connect interfaces, with pipes wrapped in 50mm centrifugal glass wool insulation to prevent freezing. The assembly process emphasizes prefabrication: 90% of components are manufactured in Xining factories, with pre-assembly and waterproof testing conducted before transportation. On-site assembly strictly follows torque control standards to prevent deformation of color steel plates.
III. Functional System Configuration
- Toilet System: Vacuum suction toilets (saving 6L per use) are equipped with plateau-specific anti-freezing flushing devices, with pipes made of 304 stainless steel.
- Heating System: Wall-mounted diesel heaters (starting at -25℃) are combined with underfloor heating pipes, maintaining temperatures between 12-18℃.
- Ventilation System: Roof-mounted turbine ventilators (sandstorm-resistant design) work in tandem with forced exhaust systems, achieving an air exchange rate of ≥8 times per hour.
- Oxygen Supply System: Ecological protection zones are equipped with diffuse oxygen supply devices, maintaining oxygen concentrations between 23-25%.
- Wastewater Treatment: Scenic areas use MBR membrane bioreactor technology, while service areas are equipped with buried integrated treatment units, meeting Class 1A discharge standards.
IV. Thermal Insulation and Environmental Protection Technologies
Walls adopt a multi-layer composite structure, with outer color steel corrugated plates filled with polyurethane foam, ensuring closed-cell ratios meet standards through injection molding. Environmental design integrates biodegradation technology, converting waste into green fertilizer; color steel plate recycling rates exceed 80%, reducing lifecycle waste.
V. Energy and Intelligent Integration
Photovoltaic panels are fitted to roof curves using custom brackets, with energy storage using low-temperature lithium battery packs supporting operation during continuous rainy weather. Intelligent systems deploy odor concentration detectors and liquid level sensors, enabling fault warnings and precise resource allocation through IoT, such as adjusting disinfectant spray frequency based on usage.
VI. Installation Inspection and Maintenance
Post-construction inspections use 3D laser scanning to check verticality deviations, joint flatness, and airtightness. Maintenance protocols include regular emptying of sewage tanks, replenishing consumables and microbial agents, with cleaning frequency adjusted dynamically based on user numbers and ambient temperature—increasing to 2-3 times daily in high-temperature seasons.
