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Initiatives to Reduce Waste Emissions

Waste Governance

The Kyowa Hakko Kirin Group is tightening its waste governance system and implementing resource recycling.

The Group makes it a rule to not only audit waste disposal service providers upon concluding contracts with them, but also to conduct periodic audits to check that their services are of high quality in order to help prevent illegal dumping. In addition, Group-wide efforts are made to enhance awareness of waste governance, such as by providing waste management personnel with ongoing education. We intend to step up measures to build a more secure and effective waste governance system.

Zero Emission Activities

Waste generated across the entire Group in Japan*1 reached 47,326 tons in 2017. In 2015, the volume and rate of final landfill disposal increased significantly owing to a malfunction of a waste disposal service provider’s waste volume reduction facility. However, by reviewing the waste treatment method in 2016, the final landfill disposal volume was reduced to 8.6 tons in 2017, accounting for 0.018% of the waste generated. Zero emission*2 was therefore achieved. We will continue with our efforts to reduce waste.

Changes in waste volume and final landfill disposal rate*1,3

Overall flow of waste recycling and disposal (FY 2017)*1,3

Scope of subjects covered: The plants and research laboratories of Kyowa Hakko Kirin, Kyowa Medex, Kyowa Hakko Bio and Kyowa Pharma Chemical
“Zero emission” generally means a reduction in the amount of generated waste to zero. The Kyowa Hakko Kirin Group uses the term to mean a reduction in the amount of waste disposed in landfills to no more than 0.1% of generated waste.
To make the effect of internal waste reduction visible, the amount of waste before internal reduction has been presented as the “amount of waste” since 2013.

Implementation of Reuse and Recycling

In October 2006, a facility to recover phosphoric acid from fermentation wastewater was built at the Kyowa Hakko Bio Yamaguchi Production Center (Hofu). Consisting largely of calcium phosphate, the recovered cake was initially treated as industrial waste, but in 2008 the production center started drying some of the cake to sell as fertilizer material (see Table 1). Meanwhile, the Yamaguchi Production Center (Ube) enhanced the yields in the nucleic acid production process, succeeding in reducing the amount of industrial waste/wastewater with high phosphorus content as well as the volume of source phosphorus purchased, thereby helping to conserve phosphorus.

The amount of phosphorus contained in total wastewater discharged by the production center dropped considerably following the installation of the facility in 2006, but in recent years a rising trend has been observed. This is attributable to the increase in production of amino acids that require large amounts of phosphoric acid as fermentation feedstock. With further growth slated in the use of phosphoric acid at the production center in Hofu, we intend to continue endeavoring to limit the amount of phosphoric acid discharged by enhancing the capacity of the phosphoric acid recovery facility.

Table 1 Output of dephosphorylated cake at Yamaguchi Production Center (Hofu) (dry matter equivalent)
  2013 2014 2015 2016 2017
Industrial waste 46 66 42 63 49
Fertilizer material (amount sold) 70 20 10 25 20
Total 116 86 52 88 69

Proper Treatment of Polychlorinated Biphenyls (PCBs)

Pursuant to the guidelines for storing industrial waste subject to special control, proper treatment of PCBs is ensured by storing used capacitors, transformers, circuit breakers and lighting ballasts under lock and key in warehouses that have been specially treated to prevent leaked substances from entering the ground. In 2017, 2 transformers were processed.

Treatment of PCBs
(Stored amount as of end of December 2017)
Capacitor/transformer/circuit breaker 0 unit
Lighting ballast 870 units
Oil containing low-concentration PCBs 0 L

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