Environmentally Hazardous Substances
The Mitsui Chemicals Group is monitoring emissions of volatile organic compound (VOC), NOx, Sox, soot and dust, hazardous air pollutants, and substances subject to the PRTR Act, and working to reduce environmental impact.
*Please refer herefor scope of data.
Of the hazardous air pollutants specified under the Air Pollution Control Act, we are particularly focused on reducing emissions of priority substances that pose a significant health risk.
The Japanese government set a target of reducing fixed-source volatile organic compound (VOC) emissions in fiscal 2010 by 30% compared with fiscal 2000. VOC emissions at Mitsui Chemicals reached 8,523t in fiscal 2000, so our goal is 5,966 tons/year. However, we intensified the goal to 3,000 tons/year or less and succeeded in making drastic reductions by fiscal 2010. We have continued maintaining emissions at this level.
Because the Mitsui Chemicals Group produces various chemical products, a wide range of VOCs are emitted. We use various methods to reduce VOC emissions into the air, including absorption by activated carbon and other filters, neutralization by acid or alkaline water, combustive decomposition, and Pressure Swing Adsorption (PSA).
Further, burning fuel in chemical product manufacturing processes generates SOx, NOx, and soot and dust. We therefore implement a variety of measures to reduce release of these items into the atmosphere by removing them using catalysts, installing dust collectors and washing towers, and using fuels free from nitrogen and sulfur.
There had been a temporary increase in emissions of chloroethylene, a hazardous air pollutant due to tank removal work in fiscal 2020, however, emissions of the substance are projected to be zero from next year.
Volatile Organic Compound (VOC) Emissions
Soot and Dust Emissions
Emissions of Hazardous Air Pollutants (Mitsui Chemicals, Inc.)
*Precious emission figures: 771 tons (FY1995), 445 tons (FY2000), 110 tons (FY2005)
Substances Subject to the PRTR Act
In accordance with the Law Concerning Reporting, etc. of Releases to the Environment of Specific Chemical Substances and Promoting Improvements in Their Management(PRTR* Act), Mitsui Chemicals submits a report to the Japanese government each year declaring the amounts of designated substances produced or used by the Company that were released into the environment or transferred elsewhere. We are further reinforcing our management while also seeking other ways to reduce annual emissions 450tons or less.
*PRTR: Pollutant Release and Transfer Register.
Substances Subject to the PRTR Act Emissions (Mitsui Chemicals, Inc.)
*Scope of Mitsui Chemicals, Inc.: Parent company production sites and the Sodegaura Center.