Environmental Protection and Energy-Saving Standards for Mobile Toilets

The environmental protection and energy-saving standards for mobile toilets cover environmental protection, energy conservation, and other related requirements, as detailed below:

Environmental Protection Standards

1. Environmentally Friendly Materials

   • Prohibit 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) like formaldehyde and benzene series. Recommend the use of recyclable or biodegradable materials (such as HDPE, stainless steel, recycled plastics, bamboo, aluminum alloy, etc.). China's "Green Product Certification" requires that recyclable materials account for no less than 30%; Japan's "Eco-Mark Certification" requires that biodegradable materials account for more than 50%.
   • Use biodegradable materials (such as polylactic acid (PLA), starch-based plastics) in toilet bowls, partitions, and other parts to reduce environmental pressure after disposal.

2. Pollutant Control

   • Wastewater Treatment: Equip with septic tanks, microbial treatment tanks, or membrane bioreactors (MBR) to achieve reclaimed water standards after treatment (e.g., COD ≤ 50 mg/l, ammonia nitrogen ≤ 10 mg/l), complying with the limits for COD, BOD5, SS, and other indicators in the "Integrated Wastewater Discharge Standard" (GB 8978-1996).
   • Exhaust Gas Purification: Install activated carbon filters or photocatalytic devices to remove odors and harmful gases (such as hydrogen sulfide, ammonia). The pollutant concentration at the exhaust outlet must be below national atmospheric pollutant emission standards. China's "Environmental Label Certification" requires that the ammonia concentration in exhaust gas be ≤ 0.5 mg/m³.
   • Microbial Pollution Control: Comply with the "Urban Public Toilet Hygiene Standard" (GB/T 17217) for the total number of airborne colonies and the detection standards for coliform bacteria on high-frequency contact surfaces (such as toilet bowls, door handles).

3. Resource Recycling

   • Encourage the use of reclaimed water reuse technology to use handwashing water for flushing toilets; convert excreta into organic fertilizers (e.g., N+P₂O₅+K₂O ≥ 5%) or clean energy through composting, biogas power generation, and other technologies.

Energy-Saving Standards

1. Low Energy Consumption Design

   • Adopt LED lighting and solar power systems, with the average daily power generation of solar panels covering basic power needs (such as lighting and ventilation).
   • Use energy-saving accessories such as variable frequency fans (power ≤ 50W) and low-flow water valves (flow rate ≤ 3L/min) to reduce operating energy consumption.

2. Intelligent Control System

   • Automatically adjust lighting and ventilation intensity through sensors (e.g., turn off some equipment when unoccupied) to avoid energy waste. Germany's Blue Angel Certification requires the installation of intelligent sensing systems, reducing energy consumption by 40% compared to traditional models.

3. Water-Saving Requirements

   • Recommend the use of water-saving toilets (such as foam-sealed or vacuum-suction types), with a single flush volume ≤ 0.5 liters, complying with the "Water-Saving Sanitary Ware" (GB/T 31436-2015) standard.

Other Related Standards

1. Odor Control and Air Quality: Comply with the "Emission Standard for Odor Pollutants" (GB 14554) for the concentration limits of odor gases such as ammonia and hydrogen sulfide; the ventilation system must meet the "Urban Public Toilet Design Standard" (CJJ 14-2016), ensuring that the air in the toilet is exchanged at least 6 times per hour.
2. Structural Stability and Durability: Comply with the "General Technical Conditions for Mobile Toilets" (GB/T 38837-2020), with the main structure made of national standard steel (e.g., square tubes ≥ 50×100mm), surface anti-corrosion treatment, and a service life ≥ 15 years.
3. Adaptability to Special Scenarios: For extreme environments (such as low temperatures, dusty or high-humidity areas), use insulation materials and heating devices to prevent freezing and enhance structural sealing.