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Waste Reduction Efforts

Basic Concept

Renesas is focusing on the 3Rs ("Reuse," "Reduce," and Recycle") to realize zero emissions. We implement these "3Rs" in manufacturing and intend to reuse all the waste generated as a result of our business activities as manufacturing resources.  

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Image: 3Rs

The 3Rs Performance

In 2019, we generated 17% less waste than in the previous year, 93% of which was reused or recycled (including some sold at a price). In Japan, 99.5% of the waste was reused or recycled, and the percentage of waste disposed of in landfills was 0.1%. Since the company's establishment, we have maintained a ratio of landfill disposal at 1% or less in Japan.

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Transition of amount of waste
 
 
 
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Figure: 2019 Amount of Waste

 

Reuse

Renesas uses plastic packaging materials (trays and magazines) for product shipments. We have prepared a reusable infrastructure (collection-cleaning-inspection system) at our Japanese and overseas production sites to ensure such packaging are efficiently reused. Carrier tape, cardboard and wafer cases are also being reused for some applications.

Reduce and Recycle

In the development of manufacturing processes and factory design, we are making efforts to minimize waste generation as much as possible and promoting waste recycling by working together with companies in other segments. For example, sludge generated from the effluent treatment process is used as roadbed and cement materials in cooperation with cement manufacturers. Metals are also reused as material steel manufacturing, and paper as raw materials for recycled paper. Waste plastics are mainly used as solid fuel.

Waste Materials Examples of Recycling
Sludge Roadbed materials, raw materials for cement, recycled sand, raw materials for metal refining
Waste Oil Incinerator combustion aid, recycled oil, raw materials for cement
Waste Acid Recycled sulfuric acid, wastewater treatment, fuel conversion, raw materials for cement, raw materials for metals
Waste Alkali Fuel conversion, raw materials for cement, raw materials for metals
Waste Plastics Incinerator combustoin aid, solid fuel, raw materials for plastics
Metal Scraps Raw materials for metals
Glass and Porcelain Scraps Raw materials for glass, raw materials for cement, tiles, lightweight aggregates
Product Waste Raw materials for silicone
Precious Metals Raw materials for precious metals
Paper Raw materials for recycled paper
Wood Chips Raw materials for paper, fertilizers, fuel
Styrofoam Paint and mortar aggregates

Preventing Soil Pollution

When harmful chemicals are passed into and accumulated in the soil, there are concerns about their negative impact on human health, crops, and ecosystems. In an effort to prevent harmful chemical substances from being passed into the soil, we systematically implement measures to reduce the risk of chemical leakage and to prevent permeation into the soil in the unlikely event of leaks.
Furthermore, in our annual environmental audits, we confirm the management status of chemical substances, including the storage locations of chemical substances and the management status of facilities used, and the status of response procedures in the event of leaks, and actively propose measures to further reduce risks.

Facilities that have already taken measures

  • Construction work to prevent leakage from waste liquid collection equipment (Kawajiri Factory and Saijo Factory)
  • Construction work to prevent chemical leaks (Saijo Factory)
  • Construction work to prevent underground permeation (Naka Factory, Musashi Office), etc.

Contributing to SDGs

Renesas’ efforts in Waste Reduction contributes to these Sustainable Development Goals targets:

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3 GOOD HEALTH AND WELL-BEING

3.9 By 2030, substantially reduce the number of deaths and illnesses from hazardous chemicals and air, water and soil pollution and contamination.

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11 SUSTAINABLE CITIES AND COMMUNITIES

11.6 By 2030, reduce the adverse per capita environmental impact of cities, including by paying special attention to air quality and municipal and other waste management

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12 RESPONSIBLE CONSUMPTION AND PRODUCTION

12.4 By 2020, achieve the environmentally- sound management of chemicals and all wastes throughout their life cycle, in accordance with agreed international frameworks, and significantly reduce their release to air, water and soil in order to minimize their adverse impacts on human health and the environment

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12 RESPONSIBLE CONSUMPTION AND PRODUCTION

12.5 By 2030, substantially reduce waste generation through prevention, reduction, recycling and reuse

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15 LIFE ON LAND

15.3 By 2030, combat desertification, restore degraded land and soil, including land affected by desertification, drought and floods, and strive to achieve a land degradation-neutral world

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15 LIFE ON LAND

15.4 By 2030, ensure the conservation of mountain ecosystems, including their biodiversity, in order to enhance their capacity to provide benefits that are essential for sustainable development