Reduction of Waste
- Amount of Disposal and Rate of Recycle
(SUMCO Group [Japan]) 
In Japan, the SUMCO Group is working to reduce the amount of waste generated as part of environmental conservation efforts. In particular, to deal with the large volume of sludge generated at our plants, the SUMCO Group is making efforts to optimize the chemicals injected for wastewater treatment, and to deal with waste oil, waste acid, waste alkali, waste plastics and other waste, we are focusing on promoting their recycling and conversion into valuable resources.
Waste Reduction through the Adoption of Reusable Containers
We are replacing the containers used to ship 300-mm diameter silicon wafers with reusable alternatives as one of the initiatives to reduce post-shipment waste.
The percentage of reusable containers used for shipment in 2022 was 84.8%.
Before introducing reusable containers, we conduct tests to ensure that the quality of the products is not affected.
Efforts to promote Resource Circulation of Plastic
In promoting waste reduction and recycling, established recycling goal for industrial waste of products using plastic, working to achieve it.
Recycling rate of industrial waste for products using plastic | |||
| «Actual year» | 2022 | 79% | (Generated amount 1,120 t) |
| «target year» | 2025 | 86% | |