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Water, Waste and Emissions

The conservation of the global environment is one of our most important management issues

Initiatives to reduce waste

We strive to reduce the amount of waste generated in our business activities, and also conduct efforts to develop technology toward reusing and recycling.
In the Environmental Action Plan revised in 2018, we are committed to reducing the generation of waste throughout the Group and set a target basic at each business site.
Of the amount of byproducts in FY2019, 44% within Japan and 9% overseas were recycled and used either within or outside of our Group.

Amount of waste generation(thousand tons)

  

                     ※ Added the amounts of overseas sites from FY2017.
                     ※The major waste of overseas sites is tailings generated from mines.

Use of recycled raw materials

Mitsui Kinzoku Group works on the recycling of waste by using resources as effectively as possible. During this process, it is essential that we establish and improve separation and purification technologies in accordance with the materials, as well as make technological improvements and renew existing manufacturing equipment for each production process. At the same time, we develop and intensify a network for collecting recycled raw materials.

Breakdown of usage by type of raw material (FY2019)

 

* Partially changed the classification method since FY2019. Rivised the total amount of raw materials for FY2018 disclosed last year from 1,390.0 thousand tons to 2,119.0 thousand tons.

Appropriate utilization and management of water

Mitsui Kinzoku Group strives to reduce and recycle water used in the business operations. Water-related risks that could have an impact on our business have not become apparent as of today, but we will advance efforts to evaluate water-related risks from multiple perspectives that include physical risks, such as the drying up of water resources and the lack of sufficient amounts of water, as well as regulatory risks related to the use of water. These efforts will also help us reduce the risks in our business.
The amount of the circulated water usage through reusing and recycling was 30,967 thousand m3. The total amount of water use was 44,446 thousand m3, which is 11.3% less than the previous year.

Breakdown of water use (FY2019)

 

* Partially changed the classification method since FY2019.

Prevent air and water pollution

Each manufacturing site of Mitsui Kinzoku Group monitors the following in accordance with laws, regulations and ordinances and voluntary standards: Sulfur oxide (SOx) emissions produced on the combustion of fossil fuels containing sulfur, nitrogen oxide (NOx) emissions from boilers, incinerators and other combustion equipment, and particulate matter, as well as water quality including BOD and COD which indicate the level of organic material in wastewater. We work on gathering and managing the monitoring results from each site, and sharing the initiatives and the technologies within the Group.

Emissions to the atmosphere (FY2019)

 

Emissions to the water (FY2019)

 

Reduction of hazardous chemical substances emissions

Each manufacturing site of the Group files the release and the transfer amount of chemical substances to the government under the Act on Confirmation, etc. of Release Amounts of Specific Chemical Substances in the Environment and Promotion of Improvements to the Management Thereof (Law concerning Pollutant Release and Transfer Register [PRTR] ). The management of hazardous chemical substances contained in products has become an essential requirement. We also respond to the guidelines for chemical substances contained in products, such as the RoHS Directive and the REACH regulations required by customers.
We aim to reduce the emission amount of environmental pollutants in accordance with the Environmental Action Plan, including our overseas sites. We continuously strive to collect and replace chemical substances that may cause environmental pollution. Thus we focus on reducing and removing use of such chemical substances from our products.

Volume of chemical substances released and transferred

     

              ※ Added the amounts of overseas sites from FY2018.
              ※Revised the values for sites in Japan for FY2018 disclosed last year.

Waste, water, air and hazardous materials

ESG Data Environment Waste, water, air and hazardous materials

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