Because of the international trend of using cement enterprises as resource circulation centers, Taiwan is promoting a resource circulation policy in response to the needed diversification of fuels (materials) for manufacturing processes and upgrading pollution prevention technologies. Since the cement industry is also a significant domestic stationary pollution source, the EPA announced the revised Cement Industry Air Pollutant Emissions Standards on 2 November 2021.
According to the EPA, the implementation of the new emission standards is expected to reduce the annual pollution emissions of the cement industry by 16%, which is about 2,246 metric tons of nitrogen oxides per year, or equivalent to reducing the annual emissions of 3,500 large diesel vehicles. It is also expected to improve the local air quality.
The three regulatory focuses of this revision are tightening the emission standards of existing regulated air pollutants, adding air pollutant control items and emission standards, and establishing consistency between the management principles of the central and local governments.
Management measures include 1. Tightening the emission standards for nitrogen oxides and implementation in stages, setting it at 300 ppm in 2024 and 220 ppm in 2026. The tightened emission standards are comparable to international ones. 2. Adding an emission standard of 100 ppm for sulfur oxides and encouraging public and private premises to improve pollution prevention and control efficiency. 3. Revising down the allowed accumulated time that the recorded six-minute values of particulate pollutant opacity exceed the specified opacity value year by year to two hours to make regulation consistent between the central and local governments. 4. Giving existing enterprises a reasonable grace period and implementing the tightened standards in stages to protect the environment and enterprises simultaneously.
This has been the most substantial revision of the emission standards since the EPA announced its last revision in 2003. It is hoped that this revision will encourage the industry to update or improve the efficiency of control equipment to safeguard air quality while steadily promoting a circular economy. In addition, the EPA will continue to review the cement industry's fluoride and mercury emission standards and tighten controls to reduce harmful air pollutant emissions and pollution caused by long-distance transmission.
Excerpt from Major Environmental Policies, November 2021
- Environmental Protection Administration, R.O.C.(Taiwan)