- Water resource conservation
- Responding to the PRTR Law
- Preventing air pollution
- Reducing VOC emissions
Water resource conservation
The Toyo Tires Group uses large amounts of water for boilers, parts processing equipment, cooling equipment for products, cooling towers, etc. We are striving to make effective use of water resources by circulating and reusing cooling water.
To regulate and manage our water consumption and waste water quantities, respective business bases set up their own voluntary targets that vary according to their operational scale and the products handled.
Amount of water used (in Japan)
Changes in the amount of water used per unit of production (in/outside Japan)
Responding to the PRTR Law
In fiscal 2015, the Toyo Tires Group used a total of 31 PRTR-designated chemical substances, of which industrial operators are required to report the amount released into, and transferred in, the environment under the PRTR Law (Law Concerning Pollutant Release and Transfer Register).
Despite ongoing efforts to reduce the use of PRTR-designated substances, including a change in composition of products containing the said substances and the adoption of alternatives, the amount of PRTR-designated substances handled in fiscal 2015 totaled 6,437 tons, up 20.4% from the previous year, due to development of new products and other reasons.
We will continue to promote PRTR-designated chemical substance management to further optimize our environmentally responsible product development.
Changes in the amounts of PRTR-designated chemical substances handled, emitted and transferred (in Japan)
Changes in the amounts of PRTR-designated chemical substances handled, emitted and transferred per unit of production (in Japan)
Preventing air pollution
NOx (nitrogen oxide) and SOx (sulfur oxide) emissions have been steadily declining, through such measures as the introduction of cogeneration systems and a fuel shift from heavy oil to natural gas at the Kuwana Plant. In fiscal 2015, stopping of use of Type-C heavy oil with a high nitrogen and sulfur content resulted in a decrease in SOx emissions to 19 tons or by 78% from the previous year, as well as NOx emissions of 355 tons or a 23% decrease from the previous year.
In the future, we will continue regular emission monitoring and reduction efforts at our business sites.
NOx/SOx emissions (in Japan)
Reducing VOC emissions
VOCs*, released into the atmosphere, cause a photochemical reaction and hence air pollution, and their emissions are regulated under the law. The Toyo Tires Group, which uses VOCs in some steps of the tire manufacturing process, has been striving to reduce VOC emissions.
As a result of our vigorous efforts to improve production methods and processes, such as reduction of the use of tire surface treatment liquid, toward the goal of reducing VOC emissions by at least 50% from the fiscal 2000 levels by the end of fiscal 2015, in fiscal 2015 VOC emissions decreased by 69% from fiscal 2000, resulting in the continuous achievement of the set targets since fiscal 2010.
We are determined to do our utmost to contain VOC emissions at the fiscal 2015 level by making our production methods and processes even more environmentally responsible.
- * VOCs, which stands for “volatile organic compounds,” is a collective term for organic chemical compounds that easily volatilize in the air and evaporate at normal temperatures and under normal pressure.
Changes in VOC emission index (with fiscal 2000 as 100) (in Japan)