Wenzhou Simple Mobile Toilet Design

The design of simple mobile toilets in Wenzhou should focus on three aspects: functional adaptation, spatial layout, and simple construction, ensuring they meet the needs of short-term high foot traffic and are easy to maintain.

1. Functional Positioning and Suitable Scenarios

The core function of a simple mobile toilet is to meet basic restroom needs, typically without complex facilities (such as accessible restrooms or母婴室 (nursing rooms)), to reduce construction costs and maintenance complexity. Its suitable scenarios are occasions with a high density of people in a short period but moderate usage frequency, such as outdoor music festivals, temporary markets, and sports events held in Wenzhou. In such scenarios, the toilets need to be quickly deployed, flexibly moved, and capable of handling daily usage by hundreds to thousands of people while avoiding resource waste due to over-design.

2. Spatial Layout and Process Adaptation

The design should focus on the following factors:

1. Site Terrain: Prioritize flat and dry areas, avoiding low-lying areas prone to water accumulation to prevent rainwater backflow or foundation settlement affecting stability. If the site has a slope, adjust the toilet's bottom support structure (such as adding adjustable feet) to ensure level placement.
2. Pedestrian Flow: The toilet entrance should be at a reasonable distance (recommended 50-100 meters) from the main activity area to avoid crowd congestion blocking pathways; the exit direction should align with personnel evacuation routes to reduce cross-interference.
3. Water Supply and Drainage Connections: If relying on external water supply, plan the water pipe layout in advance to ensure stable water pressure; the drainage outlet should connect to the municipal sewage network or a temporary septic tank to avoid direct discharge polluting the environment.
4. Cleaning and Maintenance Access: Reserve a passage at least 3 meters wide for sewage suction trucks to enter and exit; a maintainable door should be installed at the rear or side of the toilet for regular cleaning of the fecal storage tank or replacement of consumables.

3. Simple Construction Plan Reference

The storage tank modification method from case studies can be借鉴 (referred to as 'referenced' here for better English expression), with the following steps:

1. Tank Preparation: Select a recycled corrosion-resistant storage tank (such as plastic or stainless steel), cut an opening at the top as the entrance, and drill a drainage outlet at the bottom connected to a PVC pipe (diameter recommended ≥100 millimeters).
2. Internal Facility Installation:
   • Toilet: Choose a water-saving squat toilet or simple sit toilet and fix it directly above the drainage outlet at the bottom of the tank;
   • Sink: Install a small stainless steel or plastic sink with a foot-operated faucet (to avoid manual contact contamination);
   • Water Storage System: If water supply is needed, add a small storage tank (such as a 200-liter plastic barrel) and connect it to the faucet via a water pump.
3. External Structure Reinforcement: Weld a metal frame or add a wooden pallet outside the tank to enhance overall stability; install folding doors or lightweight plastic doors to ensure airtightness while facilitating opening and closing.
4. Ventilation and Odor Control: Open a ventilation port at the top of the tank and install an exhaust fan; use odor-proof floor drains or biological deodorizers inside to reduce odor diffusion.

Note: This construction plan is suitable for temporary emergency scenarios. For long-term use or to meet higher hygiene standards, it is recommended to use modular mobile toilets produced by professional manufacturers, which have a more stable structure and more comprehensive functions.