Enshi Rural Mobile Toilet Solution

The Enshi rural mobile toilet solution requires comprehensive planning in terms of design, construction, installation, commissioning, and maintenance, as detailed below:

I. Design Requirements

1. Design Principles: Adhere to the principles of "adapting to local conditions, economic applicability, and hygiene and safety". Given Enshi's rainy climate and complex terrain, modular design is prioritized, with a single toilet area of ≥1.2㎡ and a height of 2.2-2.5m to ensure sufficient internal operating space. The exterior features neutral colors such as light gray and off-white, with a sloped roof design for efficient drainage.
2. Area Configuration:

• Toilet Area: Equipped with a water-saving squat toilet (flush volume ≤6L/flush), featuring a non-slip footrest and ≥0.6m of activity space in front.
• Wash Area: Integrated sink and water storage tank, with a push-type water-saving faucet and an anti-fog vanity mirror.
• Management Area: Includes a tool storage cabinet, septic tank cleaning port, and ventilation and exhaust system (air exchange rate ≥8 times/h).

3. Material Selection:

• Main Frame: Hot-dip galvanized square steel (40×40×2mm), with surface rust prevention treatment.
• Walls: Lightweight composite wall panels (thickness ≥50mm), with B1 fire resistance, waterproofing, and thermal insulation properties.
• Floor: Non-slip and wear-resistant floor tiles (300×300mm), with a 1% slope towards the drainage outlet.
• Septic Tank: Three-chamber structure with an effective volume of ≥1.5m³, wall thickness ≥80mm, and cast-in-place C25 concrete.

II. Construction Process

1. Site Preparation: Clear debris, level the site to the design elevation, excavate temporary drainage ditches (300×400mm) and collection wells (diameter 500mm, depth 800mm), and connect to a 380V power supply and construction water (pressure ≥0.2MPa).
2. Foundation Construction:

• Excavate foundation pit dimensions of 2.5m×1.8m×1.2m, with a slope ratio of 1:0.5.
• Lay a 100mm thick graded gravel cushion and compact to a compaction coefficient of ≥0.93.
• Lay a Φ12mm steel bar mesh (spacing 200mm×200mm) at the bottom of the foundation and weld to embedded parts.

3. Main Body Installation: Use lifting or manual handling equipment to position the main body on the foundation, connect water supply and drainage pipes, and install a water trap in the sewage pipe to prevent odor backflow.

III. Installation and Commissioning Points

1. Pre-installation Inspection: Verify the parts list, test the drainage system for airtightness, and ensure there are no obstructions nearby and that it is close to water sources and sewage points.
2. Fixing Method: Small toilets are fixed with expansion bolts, while large equipment requires embedded parts for installation, with a level used to calibrate stability.
3. Function Testing: Simulate use to test flushing effectiveness, lighting brightness, and door lock operation, and conduct a full-water test on the drainage system to observe for leaks.

IV. Usage and Maintenance Recommendations

1. Daily Cleaning: Remove garbage daily, wipe down interior walls with a neutral cleaner weekly, and keep drainage outlets clear.
2. Regular Maintenance: Inspect circuits and valves monthly, check waterproofing before the rainy season, and tighten fixing screws when moving.