On May 14, the Department of Ecology and Environment and the Administration for Market Regulation of Jiangsu Province, China issued a local standard called the Integrated Emission Standard of Air Pollutants (DB32/4041-2021; the “Standard”). This standard, which includes VOC emission limits, came into effect on August 1. Here is an overview.
The Standard applies to air pollutant emissions from stationary pollution sources in Jiangsu Province. However, if there are other air pollutant emission standards set by the state or Jiangsu Province for certain industries or other targets, these standards apply instead of the Standard.
According to a source familiar with the matter, 40.6 percent or more of Jiangsu-based companies are subject to the Standard.
Emission limits (not all listed)
Newly-established companies must emit air pollutants in accordance with the limits in the table below from the Standard’s effective date onward, and existing companies from July 1, 2022 onward.
|Pollutants||Emission concentration limit||Emission rate limit|
|Nitrogen oxides (NO2 equivalent)||Combustion apparatus, stationary internal combustion engine, and engine production test||200 mg/m3||－|
|Others||100 mg/m3||0.47 kg/h|
|NMHCs||Room painting in shipbuilding||70 mg/m3||7 kg/h|
|Others||60 mg/m3||3 kg/h|
|BTEX||Preparation work and room painting in shipbuilding||45 mg/m3||4.5 kg/h|
|Others||25 mg/m3||1.6 kg/h|
The emission limits in this table for “others“ of nitrogen oxides and “others” of BTEX are the strictest in China. The emission limit for “others” of NMHCs is the strictest in China after Beijing’s (50 mg/m3).
Special limits on fugitive emissions
Both newly-established and existing companies must meet the requirements in the table below from the Standard’s effective date onward.
|Pollutants||Special emission limit||Description||Position of the fugitive emission monitoring point|
|NMHCs||6 mg/m3||The limit on hourly average of concentration at the monitoring point||Outside the factory building|
|20 mg/m3||The limit on concentration at the monitoring point at any given point of time|
Other requirement on emission limits
If the stack is shorter than 15 m, the emission rate limit is set to 50 percent of the rate limit set out in the table above.
The full text of the Standard (in simplified Chinese) is available at