Effective Use of Resources
As water shortages become an increasingly serious social problem, Daikin, which develops business globally, strives to protect water resources in line with "Goal 6: Clean water and sanitation" of the Sustainable Development Goals (SDGs). At each of our production bases around the world, we have introduced and operate an environmental management system (EMS) including for water usage, following ISO 14001 requirements. Using these environmental management systems, we are also enhancing our management of water usage.
We strive to reduce the amount of water consumed, which we define as the difference between water intake and wastewater, by reducing water intake by improving manufacturing processes and purifying and recycling used water once used, as well as purifying used water and returning it to water resources. In terms of purification, we operate under voluntary standards that are stricter than what is required by law.
Daikin recognizes that water shortages carry the risk of affecting factory operations. We utilize tools to evaluate water stress conditions (indicated by the degree of tightness between water supply and demand) in the areas where our factories operate throughout the world to identify manufacturing bases operating in highly water-stressed regions. The results of the evaluation show that applicable bases were Daikin Device (Xian) Co., Ltd. and Daikin Air Conditioning India. At each base, we are now working to reduce water intake based on the target of reducing water intake per unit of production by 5% in fiscal 2020.
Further, we view the reduction of water used as an opportunity to reduce production costs, and by taking measures to reduce water risks, we are working to avoid water risks and reduce production costs. Chemicals business manufacturing bases that require the use of large amounts of water are located in large river basins such as the Yangtze River in China and the Tennessee River in the United States, where water resources are easily secured.
Also, in consideration of the impact of water shortages on the provision of materials from suppliers, we evaluate water stress conditions at major suppliers and establish items related to water resources within our Green Procurement Guidelines that all suppliers are requested to follow to promote water resource conservation throughout the supply chain.
At Daikin, we strive to reduce water intake by ascertaining the volume of water intake at manufacturing bases and reusing wastewater to the full extent possible. We established the goal of reducing water consumption per unit of production by 5% in fiscal 2020 compared to a baseline comprising the average water intake between fiscal 2013–2015. In fiscal 2020, we reduced total water intake per unit of production by 14% compared to the benchmark for the entire Group. In fiscal 2020, we worked on ensuring the stable operation of the wastewater recycling equipment installed in the previous fiscal year and monitoring the malfunctions of the cooling tower at the Kanaoka Factory of Sakai Plant.
In addition, for the water quality of wastewater, we have established unified worldwide voluntary standards that are stricter than what is required by law, and we implement these standards exactly as they are written.
Wastewater treatment facility at Kanaoka Factory of Sakai Plant
Water risk has become a pressing issue in recent years. Since fiscal 2014, Daikin has utilized the World Resources Institute (WRI) water risk map (Aqueduct) and the World Business Council for Sustainable Development (WBCSD) Global Water Tool to conduct surveys in water-stressed regions, confirming that operations are taking place in two water-stressed regions: India and China. We have implemented countermeasures including the addition of rainwater pits and formulated a business continuity plan (BCP) assuming scenarios in which operations are hindered due to water shortages.
Daikin Airconditioning India Pvt. Ltd. periodically reports the situation of its groundwater use to the public corporation that developed the industrial park where it is situated.
We reduced water intake volumes by reusing water used for cleaning processes after purifying it with reverse osmosis membranes and activated carbon.
For example, at Daikin Compressor Industries Ltd. in Thailand, these efforts have resulted in an approximately 80 million m3 (10% overall) reduction in the amount of water used. And at Daikin Europe N.V., changing cleaning solutions to simplify the cleaning process reduced water usage, leading to water resource conservation and lower production costs.
Daikin uses water at each of its production bases during the cleaning and painting processes for air conditioner parts. This water is released after being treated. We have established and comply with voluntary standards that are stricter than legally mandated ones. In this manner, we strive to preserve water resources in the surrounding communities where we operate.
At our plants in Japan, we hold discussions with local residents once every year where we share information about such initiatives concerning water.
Find out more in your region.