On July 20, 2021, Department of Ecology and Environment of Guangdong Province, China, released “Guangdong Province VOC-related Key Industry Measures Guidelines. The guideline, which covers 12 industries including petrochemical, printing, surface coating, and electronic parts manufacturing, lists the requirement items for VOC control in a table format. The requirements items, which are based on relevant national standards, are categorized into “requirements” and “recommendations”. “Requirements” are matters that must be implemented and are enforceable. “Recommendations” are matters that companies are recommended to implement. The above requirements cover a variety of processes, from the VOC content of products and materials used in manufacturing to exhaust gases at the factory. The following is an example of requirement items for the electronic parts manufacturing industry.
|Non-solvent paint||VOC content ≤ 60g/L.||recommendation||GB/T 38597-2020|
|Storage of VOC-containing materials||Materials containing VOCs, such as cleaning agents, inks, adhesives, curing agents, solvents, and screen cleaning fluids, should be stored in closed containers, packaging bags, storage tanks, storerooms, or silos.||requirement||GB 37822-2019|
|Exhaust gas||Emission concentrations of organic exhaust gas from construction projects prior to January 1, 2002 will be subject to the stage 1 limit standard of “Emission limits of air pollutants”(DB4427-2001);Emission concentrations of organic exhaust gas from construction projects after January 1, 2002 will be subject to the stage 2 limit standard of “Emission limits of air pollutants” (DB4427-2001) If the initial emission rate of NMHC in the exhaust gas of the production facility is more than 3kg/h, the VOC treatment facility shall be constructed and its treatment efficiency shall be more than 80%.
The average hourly concentration of NMHC at the monitoring point of fugitive emission in the site shall be 6 mg/m3 or less, and the concentration value per any one time shall be 20 mg/m3 or less.
The original text of the above guidelines can be found at the following URL (in simplified Chinese)