- Water Resource Conservation
- Responding to the PRTR Law
- Preventing Air Pollution
- Reducing VOC (Volatile Organic Compounds) Emissions
Water Resource Conservation
Toyo Tires Group uses water in boilers, component processing equipment, cooling equipment for products, cooling towers, and sanitation facilities. To reduce the amount of water we use, each site is responsible for establishing its own goals based on the size of the facility and the types of products they produce. We are revamping our equipment to reuse water in each production process. In FY 2016, Toyo Tires Group consumed 3.2 million tons of water in Japan.
Trend in the amount of water used (in Japan)
Trend in the amount of water used per unit of production (in/outside Japan)
Responding to the PRTR Law
In FY 2016, Toyo Tires Group reported 30 PRTR substances to the government agency as required by “Law for PRTR and Promotion of Chemical Management” (PRTR Law). We reduced the amount of PRTR substances emitted or transferred offsite by our facilities in FY 2016 compared to the previous period. However, we handled 6,576 tons of PRTR substances in FY 2016, a 2.0% increase from the previous period. This was because we have more products that contain PRTR substances among our new products.
We will continue to promote PRTR-designated chemical substance management to further optimize our environmentally responsible product development.
Trend in the amounts of PRTR-designated chemical substances handled, emitted and transferred (in Japan)
Trend 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 FY 2015, we eliminated the use of C heavy oils which contain more nitrogen and sulfur. This helped us significantly reduce the SOx and NOx emissions. In FY 2016, we maintained the level of SOx emissions low at 23 tons, close to the level in FY 2015, and we reduced the NOx emissions to 336 tons, a 5% reduction from the previous period.
We will start using boilers that run on natural gas at Sendai Plant in FY 2017. We expect that this will help us reduce the emissions even more. We plan to regularly monitor and reduce the emissions at other plants as well.
Trend in NOx and SOx emissions (in Japan)
Reducing VOC (Volatile Organic Compounds) Emissions
Toyo Tires Group is following the self-regulatory initiative by the Japan Rubber Manufacturer’s Association to reduce VOC* emissions. For the 17 VOC that are commonly used in the rubber industry, we plan to reduce VOC emissions by 50% compared to fiscal 2000 and maintain it. Most of our VOC emissions come from rubber solvents we use and we are working on switching to alternative solvents. We have been able to keep the VOC emission indexat 65% or more below the FY 2000 level for the past five years. We will continue to improve our production methods and processes to decrease the amount of VOC emissions.
- * Volatile Organic Compounds: These diverse compounds, which vaporize in the atmosphere.
Trend in VOC emission index (with fiscal 2000 as 100) (in Japan)