Amounts of Atmospheric Emissions

In order to reduce atmospheric pollution from sulfur oxides (SOx) and nitrogen oxides (NOx and Soot), Tokuyama equips boilers, cement kilns, and other pollutant-generating facilities with flue gas desulfurizers, denitration equipment, low-NOx burners, and high-performance dust collectors.

Emissions of Pollutant Release and Transfer Register (PRTR)*Substances

The emissions of the substances listed in the PRTR law in Japan are as follows. Tokuyama is implementing continuous measures and working hard for reducing the emissions of substances which may be harmful to human health and ecosystems.
*The PRTR system collects and publishes data on the sources of designated harmful chemical substances and the amounts of these substances discharged in the environment or transported from production sites as part of waste matter

Tokuyama Factory uses a large amount of water for manufacturing. On the other hand, through the analysis of risks and opportunities, it became clear that climate change and water issues are closely related in our company, so we have set targets and are managing them appropriately.

Management of Water Withdrawal

・We aim to conserve water by not exceeding the amount of tap water used in the previous year.

・For industrial water, which is used for cooling water and process water, we check the amount of water stored in dams every day and set the water saving rate according to the storage rate for management.

・For cooling water, which is used at a rate of 1.5 million m³/day, we are trying to achieve the target water conservation rate by effectively utilizing condensed water of approximately 25,000 m³/day and circulating it with industrial water at a rate of 100,000 m³/day or less.

Water Quality Management

In order to comply with legal regulations and agreed values with local governments, we have established stricter voluntary control values to ensure thorough management by monitoring of contaminants and purification using wastewater treatment facilities. We are reducing emissions of COD*, nitrogen, and phosphorus, which are subject to the regulation of total emission for water quality, through activated sludge treatment facilities and other measures.
* COD: Chemical Oxygen Demand. One of the indicators of water contamination. Oxygen demand is the amount of oxygen consumed when organic matter in water is oxidized.