Inspection of Mobile Environmental Toilets in Yongzhou

The inspection of mobile environmental toilets in Yongzhou must adhere to national unified standards for mobile toilet inspection, covering five core indicators: safety, environmental protection, hygiene, convenience, and durability. Standardized methods and equipment are employed for the inspection process.

I. Inspection Standards and Regulatory Basis
Mobile toilet inspections must comply with national regulations such as the "Urban Public Toilet Design Standard" (CJJ 14-2016) and the "Hygiene Standards for Portable Sanitation Facilities," focusing on verifying hygiene and safety, structural stability, and environmental adaptability. Inspection items include structural stability testing, material corrosion resistance, formaldehyde and VOCs emission testing, surface bacterial colony count and E. coli group testing, and verification of wastewater treatment system purification efficiency, ensuring that facilities do not pose harm to the environment or human health during long-term use.

II. Specific Inspection Methods and Content

1. Appearance and Structural Inspection: Evaluate the toilet's appearance for aesthetics, structural rationality, and workmanship through visual inspection, ensuring no cracks, deformations, or loose connections.
2. Material Inspection: Conduct environmental protection tests on raw materials such as plastics, metals, and wood to verify compliance with non-toxic, harmless, and recyclable requirements, avoiding the use of materials containing heavy metals or harmful substances.
3. Performance Inspection:
   • Load-bearing Capacity: Test the compressive strength of floors, walls, and other parts using a universal material testing machine to ensure they can withstand normal usage loads.
   • Mobility Performance: Simulate actual handling scenarios to inspect the flexibility and stability of wheelsets, brackets, and other components.
   • Drainage Performance: Verify the purification efficiency of the wastewater treatment system to ensure compliance with standards such as HJ 664-2013 for sewage discharge.
4. Hygiene Performance Inspection:
   • Microbial Control: Use a constant temperature and humidity incubator to detect the total bacterial colony count and E. coli group count on internal surfaces, ensuring compliance with the hygiene limits specified in GB 15979-2002.
   • Pathogen Transmission Prevention: Inspect ventilation systems and sealing designs to ensure effective blocking of pathogen transmission pathways.
5. Durability Inspection: Simulate long-term usage scenarios to test the material's resistance to wear, corrosion, and aging, such as salt spray tests for metal components and ultraviolet accelerated aging tests for plastic components.

III. Inspection Equipment and Standardized Methods
The inspection process employs standardized methods, such as formaldehyde emission testing in accordance with GB/T 17219-2021, VOCs testing using gas chromatography-mass spectrometry, and microbial testing following GB 15979-2002. Key equipment includes constant temperature and humidity incubators, universal material testing machines, and salt spray test chambers, ensuring objective and accurate data.

IV. Applicability Statement
Although there are currently no specific inspection standards for the Yongzhou region, the aforementioned national standards comprehensively cover the core quality requirements for mobile environmental toilets and can be directly applied to facility inspections in Yongzhou.