Safety and Environmental Protection Requirements for Mobile Toilets

The safety and environmental protection requirements for mobile toilets cover two core aspects: safety protection and ecological friendliness. The specific requirements are as follows:

I. Safety Requirements

1. Site Selection and Layout Safety
   Mobile toilets should be located away from main construction roads, material storage areas, and living quarters, maintaining a safe distance from hazardous areas such as foundation pits and slopes to prevent overturning or personnel injury due to construction activities or geological risks.

2. Structural Stability
   The base should be fixed with expansion bolts to prevent tipping; the floor should use anti-slip materials to reduce the risk of slipping; for low-temperature environments (-40℃ to 50℃), pipes and sewage tanks should be wrapped with flame-retardant extruded polystyrene boards and other insulation materials, and equipped with heating devices to prevent freezing; in areas with sandstorms or high humidity, the structural sealing should be enhanced to prevent the intrusion of external pollutants.

3. Barrier-Free Design
   The toilet stall width should be ≥900mm, equipped with handrails, anti-slip mats, and other facilities to ensure the safety of special groups such as the disabled and the elderly.

II. Environmental Protection Requirements

1. Environmentally Friendly Materials

   • Prohibition of Harmful Substances: The use of materials containing heavy metals such as lead, mercury, cadmium, and hexavalent chromium, as well as coatings and adhesives containing volatile organic compounds (VOCs) such as formaldehyde and benzene series, is prohibited to reduce indoor air pollution.
   • Priority for Recyclable Materials: The use of recyclable materials such as recycled plastics, bamboo, and aluminum alloys is encouraged to reduce dependence on primary resources.
   • Application of Biodegradable Materials: Biodegradable materials such as polylactic acid (PLA) and starch-based plastics should be used for toilet bowls and partitions to reduce long-term environmental pressure after disposal.

2. Energy Efficiency Optimization

   • Low-Energy Design: LED lighting and solar power systems should be adopted to reduce electricity consumption.
   • Energy-Saving Equipment Configuration: Components such as variable frequency fans and low-flow water valves should be used to reduce operating energy consumption.
   • Smart Control Technology: Sensors should be used to automatically adjust lighting and ventilation intensity to avoid energy waste.

3. Pollutant Control

   • Wastewater Treatment: Equipped with septic tanks, microbial treatment tanks, or membrane bioreactors (MBR), ensure that excreta is treated to meet the reclaimed water standard (COD≤50mg/l, ammonia nitrogen≤10mg/l) for use in toilet flushing or landscaping.
   • Exhaust Gas Purification: Install activated carbon filters or photocatalytic devices to remove odors and harmful gases such as hydrogen sulfide and ammonia, with pollutant concentrations at exhaust outlets required to be below national atmospheric emission standards.
   • Noise Control: The noise level of equipment such as fans and water pumps during operation should be ≤55 decibels to avoid disturbing the surrounding environment.

4. Resource Recycling

   • Excreta Resource Utilization: Through composting, biogas power generation, and other technologies, convert excreta into organic fertilizers or clean energy.
   • Water Conservation and Reclaimed Water Reuse: Promote the use of water-saving toilet bowls such as foam-sealed and vacuum-suction types (single flush volume ≤0.5 liters), and adopt reclaimed water reuse technology to use hand-washing water for toilet flushing, achieving water resource recycling.