To reduce our environmental burden at Tokai Carbon, we not only take measures required by various laws, but also strive to reduce environmental pollutants based on our voluntary standards that are stricter than current laws.
For industrial waste, we will focus on further reduction of consignment disposal volume and overall disposal volume, by thoroughly separating waste and recycling.
In order to reduce environmental load on the atmosphere, we aim to reduce our SOx and NOx emissions to below the legal emission standard level every year by managing our operations through fuel conversion, improvement of combustion methods, and appropriate operation management of our flue gas desulfurization units. We have achieved emission below our target level in 2022.
For VOC (volatile organic compounds), we have set our target to reduce their emissions by 90% or more compared with the 2015 level (reference year) every year, and this has been achieved for the last four years.
At Tokai Carbon, we produce various types of carbon products from raw materials such as petroleum pitch, feedstock, natural gas, and so on. To use resources more efficiently, we are making ongoing improvements to our production methods enabling us to produce more products with fewer raw materials.
Tokai Carbon carries out strict control of chemical substances that are hazardous and toxic to human health or to the environment, and is actively engaged in reducing their use. Furthermore, Tokai Carbon has set the following substances as “Prohibited Substances” and prohibits the manufacture and sale of products that contain these Prohibited Substances.
Regulation | Substances |
---|---|
Industrial Safety and Health Act | Substances prohibited from being manufactured, etc. |
Industrial Safety and Health Act | Specified Chemical Substances Group 1 Substances as defined in Appended Table 3 of the Order for Enforcement of Industrial Safety and Health Act |
Act on the Regulation of Manufacture and Evaluation of Chemical Substances | Class I Specified Chemical Substances |
Poisonous and Deleterious Substances Control Act | Specified Poisonous Substances |
Act on the Prohibition of Chemical Weapons and Regulation Regarding Restrictions, etc., of Specified Substances | Specified Substances (Agents listed in Table 1 of the Chemical Weapons Prohibition Act) |
Act on the Protection of the Ozone Layer through the Control of Specified Substances, etc., and Other Measures | Specified substances listed in Annex A and B |
Stockholm Convention on Persistent Organic Pollutants (POPs Convention) | Substances listed in Annex A, B, and C |
Industrial waste generation and treatment(t)
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Action | 2018 | 2019 | 2020 | 2021 | 2022 |
---|---|---|---|---|---|
Waste Generation | 7,816 | 8,272 | 9,400 | 7,749 | 6,854 |
Recycling Rate | 66% | 84% | 89% | 85% | 87% |
Waste Consigned for Processing | 3,781 | 3,543 | 5,052 | 3,724 | 3,250 |
Final disposal rate | 45% | 23% | 17% | 19% | 18% |
Generation and disposal of waste plastics (tons)
FY2022 | |
---|---|
Amount of waste plastic generated | 263 |
Recycling rate | 68% |
Aiming to further improve the recycling rate, we will work on thorough sorting and effective use of waste plastics.
Main materials used (amounts purchased)(t)
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2018 | 2019 | 2020 | 2021 | 2022 | |
---|---|---|---|---|---|
Carbon black feedstock | 1,272,844 | 1,125,918 | 777,673 | 1,016,481 | 882,392 |
Calcined coke | 113,569 | 99,376 | 16,643 | 78,266 | 91,453 |
Discharges of Environmentally Hazardous Substances into atmosphere
Units | 2018 | 2019 | 2020 | 2021 | 2022 | |
---|---|---|---|---|---|---|
NOx emissions | t/year | 672 | 587 | 497 | 492 | 554 |
SOx emissions | t/year | 1,162 | 942 | 579 | 736 | 945 |
Volatile organic compound (VOC) emissions | t/year | 0.8 | 0.6 | 1.0 | 1.1 | 1.2 |
Hazardous waste emissions (t)
2019 | 2020 | 2021 | 2022 |
---|---|---|---|
49 | 316 | 58 | 41 |