The EPA recently preannounced draft revision of the Cement Industry Air Pollutant Emission Standards (the Standards below) (水泥業空氣污染物排放標準). The purpose is to reduce significant emissions of air pollutants from stationary sources, maintain air quality by urging public and private premises to improve the efficiency of air pollution control equipment and facilitate recycling and environmental improvement policies.
The EPA noted that it’s a global trend for the cement industry to be a center for recycling. With diversified fuels and raw materials during the production and improved pollution control technology, various countries across the world have revised emission standards for the cement industry's air pollutants. Taiwan has been promoting recycling policies in stages. The cement industry is one of the significant stationary sources, and the Standards have not been amended since 2003. Evidently, evaluation and revision are necessary, considering the current control status of other countries and the local cement industry's actual emissions.
This preannouncement includes stricter emission standards for nitrogen oxides (NOx) and particulate matter, newly added emission standards for sulfur oxides (SOx), and reasonable buffer periods provided to existing enterprises after the revisions. NOx emission standards will be implemented in stages, and its emission concentration will come down to no more than 300ppm starting in 2024 and 220ppm in 2026. The tightened standards will be in line with those of other countries worldwide, leading to industry transformation and improvement of control equipment efficiency via the amendments.
The main points are as follows:
1. Definitions are newly added concerning the ignition period, idle period, existing pollution source, and newly installed pollution source.
2. As seen in the revised tables, unambiguous emission concentration standards are in place concerning air pollutants from raw material mills and chilling clay machines.
3. Emissions standards for NOx and particulate matter are tightened. Those for SOx are newly added, and reasonable buffer periods are defined for existing enterprises. Also, air pollutant emission standards are added concerning rotating kilns for ignition and idle periods.
Excerpt from Major Environmental Policies, September 2021
- Environmental Protection Administration, R.O.C.(Taiwan)