Huangshi Small Mobile Toilet Design
The design of small mobile toilets in Huangshi requires comprehensive consideration of structure, materials, component configuration, sewage disposal systems, and other special needs. Here are the specific design points:
Structural Design Adopt a modular design, dividing the roof, floor, side walls, and sanitary components into independent modules, which are fixed with embedded bolts or snap-in connectors for easy transportation and installation. The frame system uses steel structures, such as 8# channel steel welded columns (100×100×3mm galvanized square tubes), with beams made of 80×40×2.5mm rectangular steel tubes. Nodes are fully welded and coated with epoxy zinc-rich primer (dry film thickness ≥ 60μm) to ensure structural stability and meet lifting requirements. Each toilet compartment is designed to be 1600mm×1100mm in size, with an indoor clear height of no less than 2.2m to accommodate small spaces.
Material Selection The exterior walls use metal carved panels (thickness ≥ 0.3mm), which are fire-resistant, moisture-proof, and corrosion-resistant, with customizable surface textures (such as imitation rock textures for scenic spots). The interior walls use E1-grade environmentally friendly integrated decorative wall panels with sealed joints. The floor is laid with anti-slip tiles or stone-plastic flooring (anti-slip value BNP ≥ 60), with waterproof fillers used for joints and 50-80mm high water barriers installed around the perimeter. The roof adopts a multi-layer structure (0.4mm color steel plate + 30mm extruded polystyrene board + 0.3mm aluminum foil reflective layer) with a 5% slope and a drip edge at the eaves for both waterproofing and insulation.
Sanitary Component Configuration The toilet area is equipped with ceramic squat toilets (with water traps) or foam-sealing water-saving squat toilets (consuming 0.5L of water per use), along with stainless steel handrails (diameter 30-40mm, load-bearing capacity ≥ 100kg), clothes hooks, toilet paper holders, and waste bins. The handwashing area is installed with ceramic hand basins, sensor faucets, anti-fog grooming mirrors, hand dryers, and trash cans. The management room is equipped with tool cabinets, five-hole sockets (with leakage protectors), lighting fixtures, and ventilation equipment. The third toilet (optional) is equipped with adult/child toilets, baby changing tables, barrier-free handrails, and emergency call devices.
Sewage Disposal System Traditional designs utilize gravity differences and air pressure balance to achieve directional sewage disposal, with pipes connected at a 45-degree angle to prevent blockages. The water tank siphon structure maintains water level differences, and pipe diameters and slopes need to be verified for efficiency through fluid simulation tests. Packaged toilets use microbial degradation technology, where bacteria decompose feces into carbon dioxide, water, and inorganic salts. Urine is reduced in volume through evaporation or crystallization units, eliminating the need for external sewage pipes and requiring only periodic replenishment of bacteria agents.
Other Design Considerations It is necessary to optimize wind resistance, rain resistance, and insulation performance based on Huangshi's climate characteristics (high temperatures in summer, low temperatures in winter, and plum rain). Compliance with the "Barrier-Free Design Code" (GB55019) ensures convenience for disabled individuals. Sewage discharge must meet the Class A standard of the "Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants" (GB 18918-2002).
