Besides working to reduce the amount of waste generated, the Daikin Group is making effective use of waste through methods such as material and thermal recycling.
The machinery divisions have set targets for waste reduction per unit: a 5% reduction in fiscal 2015 against fiscal 2010 at production bases in Japan, where such measures have been implemented a relatively long time; and a 10% reduction at overseas production bases, where there is still plenty of room to achieve reductions. In the Chemicals Division, we have set a target to reduce waste to landfill by 50%.
In fiscal 2011, the entire Daikin Group achieved a 1% reduction in waste per unit against fiscal 2010. The recycling ratio was 81%.
Amount of Waste and Recycled Materials (FY2011)
Daikin Compressor Industries Ltd. (DCI; head office: Thailand), the manufacturing base for compressors for residential air-conditioners, mixes equal parts of the sludge from grinding and the cutting debris from casting, dries the mixture out, compresses it, and recycles it as casting material. The company was able to recycle 145 tons of sludge in this way in fiscal 2011.
The Shiga Plant has been procuring an increasing amount of materials and parts from overseas and these have been accompanied by an increasing number of pallets.
The plant tried to figure out how to recycle these pallets and came up with the idea of making them into charcoal, which is now used as deodorizing agent in the deodorizing equipment on painting lines.
|Absorption deodorizer||Crushing wooden palettes||Making charcoal (activated charcoal)|
Daikin employees do every little thing possible in their daily work to reduce the amount of waste generated. The Sakai Plant reuses buffer material in product packaging. The Shiga Plant has reduced the amount of wood waste by 75% by reusing this valuable resource whenever possible. It also has reduced the amount of sludge requiring processing by reducing the water content following water treatment. In fiscal 2011, we stepped up efforts to separate plastic waste and were thus able to achieve a 30% increase in use of recycled materials against fiscal 2010.
In the Chemicals Division, we incinerate waste on site to create raw materials we can use. At the Kashima Plant, we have reduced the amount of sludge requiring processing by drying it to reduce the water content.
At our plants, we periodically repair and patrol equipment that uses water in the production processes. We also measure the amount of water used and try to reuse as much waste water as possible. As targets for fiscal 2015 against fiscal 2010, we aim to reduce water use by the Daikin Group in Japan by 5% and water use per unit at overseas bases by 10%.
In fiscal 2011, we focused on improving the management of equipment that uses water at Japanese plants, and the result was a 3% reduction in water used against fiscal 2010. Overseas, through efforts such as reducing water use by improving production processes, and reusing waste water for toilets and other purposes, water use per unit was down 5% over fiscal 2010.
We aim to further reduce waste water amounts, and we are looking into a waste water recycling system as one way to do this.
In August 2010, Daikin Europe N.V. changed its washing process for metal plates. Changing the chemicals used allowed the washing water to be reused, cutting use of clean water by 70%. Our next goal is to reduce the use of water in our quality control divisions.
Daikin Compressor Industries Ltd. (Thailand) (DCI) has installed a new filter system on the water treatment equipment for waste water from the cafeteria and restrooms. This waste water can be made as clean as industrial-use water and is used for the company toilets. This new filter system contributed to the reuse of 10,578 m3 of water in fiscal 2011.