Initiatives for Managing Water Resources
The Toray Group is working to provide solutions to water resources problems around the world, based on the following policies. In its own operations, the Group effectively uses and recycles water and properly manages water resources.
- The Toray Group recognizes that water is one of the most important resources for humanity, and that people are confronting problems related to water resources in many areas of the world.
- The Toray Group is committed to helping to solve global water resources problems through its products, technologies and services.
- The Toray Group continuously monitors the state of regional water resources, and conducts appropriate management of water resources according to the basic principle of sharing precious water resources with the local communities where the Group operates.
The Toray Group practices the 3Rs (reduce, reuse, recycle) in consuming water resources, and monitors the quality of water that is released into public bodies of water.
Water Resource Management by the Toray Group
The Toray Group used 226 million tons of water in fiscal 2016, an increase of 2% over the previous fiscal year. Compared to the amount used per unit of sales in fiscal 2001, set to an index value of 100, usage in fiscal 2016 stood at 59.5 points, up 3.3 points from the previous fiscal year. The increase was due to higher water usage at group companies outside Japan.
Comparative Water Usage Per Unit of Sales (Toray)
|Comparative water usage per unit of sales
VOICEMessage from a Wastewater Treatment Professional
Aiming to Eliminate Emissions of Substances with Negative Environmental Impact
The Chinese government is introducing tougher wastewater standards in an effort to improve water resource management. The emission standard for chemical oxygen demand (COD) is particularly strict, at no more than 200 mg per one liter of wastewater. Our company complies with these standards.
Wastewater generated from the cleaning process in dyeing is high in polymer starch and COD concentration, and it is also highly alkaline, hot water, so that it is barely treatable by biological treatment. We collaborated with Toray Group companies in Japan to invest several million renminbi for the development of a proprietary wastewater treatment system. The system can treat up to 500 tons of water per day, first separating and concentrating the highly concentrated wastewater generated from the cleaning process, then separating the paste liquid and alkaline substance, which is reused in the cleaning process.
In addition, our manufacturing process generates high temperature smoke containing oils and other substances that affect the atmosphere. We remove more than 90% of the oil from the smoke, and then feed the smoke to a heat exchanger and reuse it to generate energy. This enables us to effectively reduce oil smoke emissions, conserve energy, and reduce CO2 emissions. We will continue to actively adopt environmental technologies, with the aim of eliminating emissions of substances with a negative impact.
Sun XiaoboGeneral Manager, Water Treatment Division, Toray Sakai Weaving & Dyeing (Nantong) Co., Ltd.