The Oji Group drains wastewater generated by business activities into various waterways after reducing environmentally hazardous substances in it to be below regulatory values by physical and chemical treatment.
As part of the wastewater monitoring process, we are managing and monitoring discharge water quality. We measure the pollutant's quantity following the law and control them by continuous measurement. If the pollutant's quantity exceeds our voluntary control values, we take measures to prevent pollution by suspending operations.
Each Group mill manages wastewater quality using voluntary management values that are stricter than the regulatory values stipulated by laws and ordinances, ensuring compliance in an effort to comply with regulatory values. We are committed are working to purify the wastewater. For example, in FY2023, we reduced COD (chemical oxygen demand) in wastewater by at least 51% compared to the emissions that would have been allowed under the regulatory values.