Pollution Prevention

Conservation of Air Environment

Conservation of Air Environment

Air pollutants discharged through our business operations include sulfur oxides (SOx), nitrogen oxides (NOx), and soot/ dust emitted from boilers and furnaces as well as volatile organic compounds (VOCs) from crude oil or petroleum product storage tanks and tanker truck loading facilities. Thus, our refineries and complexes carry out operational management to ensure compliance with emission standards under laws and regulations as well as with emission limits prescribed by regional pollution prevention agreements.

Air pollutant emissions
  • (Unit: t)
  FY2019
SOx 12,315
NOx 17,286
Soot/dust 232
  • * Scope of calculation: Idemitsu Kosan Co., Ltd. and its consolidated subsidiaries
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