Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Emission Characteristics and Coefficients of Air Pollutants in Iron and Steel Manufacturing Facilities

제철제강시설의 대기오염물질 배출특성 및 배출계수 산정

  • Received : 2021.04.22
  • Accepted : 2021.05.20
  • Published : 2021.06.30
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Abstract

Objectives: This study was conducted to identify the emissions characteristics of total particulate matter (TPM), fine dust (PM10, PM2.5), and gaseous pollutants (SOx, NOx) in iron and steel manufacturing facilities in order to investigate emissions factors suitable for domestic conditions. Methods: Total particulate matter (TPM), fine dust (PM10, PM2.5), and gas phase materials were investigated at the outlet of electric arc furnace facilities using a cyclone sampling machine and a gas analyzer. Results: The concentrations of TPM ranged from 1.64 to 3.14 mg/Sm3 and the average was 2.47 mg/Sm3. Particulate matter 10 (PM10) averaged 1.49 mg/Sm3 with a range of 0.92 to 1.99 mg/Sm3, and the resulting ratio of PM10 to TPM was around 60 percent. PM2.5/PM10 ranged from 33.7 to 47.9% and averaged 41.6%. Sulfur oxides (SOx) were not detected, and nitrogen oxides (NOx) averaged 6.8 ppm in the range of 5.50 to 8.67 ppm. TPM emission coefficients per product output were in the range of 0.60 to 1.26 g/kg, 0.13 to 0.79 g/kg for PM10 and 0.12 to 0.36 g/kg for PM2.5, and showed many differences from the emissions coefficients previously announced. An emissions coefficient for NOx is not currently included in the domestic notices, but the results were calculated to be 0.42 g/kg per product output. Conclusions: Investigation and research on emissions coefficients that can reflect the characteristics of various facilities in Korea should be conducted continuously, and the determination and application of unique emissions coefficients that are more suitable for domestic conditions are needed.

Keywords

Acknowledgement

본 연구의 일부는 "환경분야 시험검사의 국제적 적합성 기반구축사업" 지원에 의해 수행되었으며, 이에 감사드립니다.

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