Sustainability Initiatives

We handle a wide variety of chemical substances, which we manage thoroughly in order to reduce environmental risks.
We also promote the 3Rs (Reduce, Reuse, Recycle) to reduce waste and promote effective use of resources.

Reduction of the Final Disposal of Industrial Waste

As production continues to increase to meet rising demand, we have been working to reduce industrial waste. Moreover, from FY2018 onward, we have been promoting recycling of waste generated, thereby reducing the amount of final disposal of industrial waste, and in FY2020, we reduced the amount by 70% compared to the previous year.

Going forward, we will consider specific measures to recover resources from waste, and we will work to further reduce waste by building facilities for this purpose.

The 8th RC Action Targets

  • Target: Reduce final disposal of industrial waste by 15% compared to FY2018 by improving the recycling rate (5% reduction per year).
  • Result: 65.4% reduction in FY2020 compared to FY2018.

Amount of industrial waste treated

Amount of industrial waste treated

Reduction of Emissions of PRTR Target Substances

Businesses are obligated to monitor and report to the government the amount of chemical substances released or transferred, and we use the JCIA method* to manage the chemical substances we handle. In FY2020, Kanto Denka handled 28 PRTR target substances with a total weight of 205,000 tons. Emissions into the environment totaled 12.7 tons, which equates to 62 grams of unit emissions per ton handled.

*The JCIA method covers a greater number of substances PRTR target substances under the law and requires more stringent management.

The 8th RC Action Targets

  • Target: Reduce unit emissions of PRTR-designated chemical substances under the JCIA method by 30% compared to FY2018 (10% reduction per year)
  • Result: 22.5% reduction in FY2020 compared to FY2018.

Emissions of PRTR target substances

Emissions of PRTR target substances
Detoxification equipment for environmental pollutants

Reduction of Emissions of Air Pollutants

We are working to reduce the emissions of atmospheric pollutants, namely SOx (sulfuroxides), NOx (nitrogen oxides) and Soot and Dust through fuel conversion and stable operation of abatement equipment. Going forward, we will continue to enhance facility management and operations management so that we can maintain low emissions levels.

Emissions of air pollutants

Emissions of air pollutants

Reduction of Water Pollutant Emissions

To prevent environmental impact, we conduct thorough wastewater management based on in-house standards that are stricter than those stipulated by environmental laws and regulations.

[Amount of pollutants in wastewater]

(Unit: tons)
FY2018 FY2019 FY2020
COD 28.49 28.43 28.44
Total nitrogen 53.49 39.10 37.85
Total phosphorus 0.86 0.89 0.92