Sustainability

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Initiatives to Reduce Chemical Releases

Initiatives to Reduce VOC Emissions and PRTR Substances Emissions

In efforts to reduce emissions of chemical substances, the Kyowa Hakko Kirin Group upholds the target of reducing the discharge of volatile organic compounds (VOCs) by half in 2020 compared to the 2003 levels, as VOCs account for most of the chemical substances discharged by the Group.

In 2016, VOC emissions across the Group in Japan increased to 507 tons, up 2% from 492 tons in the previous year. This was a decrease of 45.7% from the 2003 level. Methanol accounted for 68% of all compounds discharged, playing a major role in the increase. As part of our measures to reduce VOC emissions, we are planning to consolidate our production sites and modify our production processes for items requiring large amounts of methanol so as to eliminate the use of the compound. Furthermore, when installing new facilities using VOCs, they will be accompanied by VOC removal facilities.

Changes in VOC emissions

Breakdown of VOC emissions (2016)

The Group’s total domestic emissions of PRTR Class I Designated Chemical Substances in 2016 decreased to 59.1 tons, down 4.1% from 61.6 tons in 2015.

Changes in emissions of PRTR Class I Designated Chemical Substances

2016 Emissions of PRTR Class I Designated Chemical Substances
Number designated by ordinance Name of substance Atmosphere
(ton)
Water area
(ton)
Soil
(ton)
9 Acrylonitrile 0.00 0.00 0.00
13 Acetonitrile 0.02 0.36 0.00
20 2-aminoethanol 0.00 0.00 0.00
53 Ethylbenzene 4.66 0.00 0.00
71 Ferric chloride 0.00 0.00 0.00
80 Xylene 4.95 0.00 0.00
127 Chloroform 0.02 0.00 0.00
137 Cyanamide 0.00 0.00 0.00
157 1,2-Dichloroethane 0.00 0.00 0.00
186 Dichloromethane 1.57 0.00 0.00
232 N,N-Dimethylformamide 1.14 0.30 0.00
275 Dodecyl sodium sulfate 0.00 0.02 0.00
300 Toluene 32.82 0.02 0.00
308 Nickel 0.00 0.00 0.00
309 Nickel compounds 0.00 0.09 0.00
342 Pyridine 0.01 0.09 0.00
349 Phenol 0.00 0.00 0.00
392 n-Hexane 9.16 0.00 0.00
405 Boron compounds 0.00 3.59 0.00
411 Formaldehyde 0.01 0.00 0.00
438 Methylnaphtalene 0.29 0.00 0.00
Total (tons) 54.64 4.47 0.00
179 Dioxins (mg-TEQ) 0.00 0.00 0.00

Initiatives to Prevent Air Pollution

The Kyowa Hakko Kirin Group is taking rigorous measures to switch fuel sources for boilers and make capital investments to maintain emissions of sulfur oxides (SOx), nitrogen oxides (NOx) and dust, which are indices of air pollution, at low levels.

Changes in emissions of SOx, NOx and dust
(Kyowa Hakko Kirin Group’s domestic plants and research laboratories*)

*
Specifically, the domestic plants and research laboratories of Kyowa Hakko Kirin, Kyowa Medex, Kyowa Hakko Bio and Kyowa Pharma Chemical

Initiatives to Prevent Water Contamination

The Kyowa Hakko Kirin Group is aggressively making capital investments to improve its production processes and wastewater treatment facilities with the aim of reducing its emissions of chemical oxygen demand (COD), nitrogen and phosphorus, which are indices of water contamination.

As part of our efforts to prevent water contamination, we treat discharged water with membranes for sophisticated purification and remove metal-containing wastewater before discarding it as industrial waste in order to prevent the discharge of hazardous substances and substances with high environmental impact. In addition, we also assess the impact of the water we discharge on the ecosystem by using the whole effluent toxicity (WET) test in order to monitor the water quality of rivers and seashores where our effluent is discharged.

Changes in emissions of COD, total nitrogen, total phosphorus
(Kyowa Hakko Kirin Group’s domestic plants and research laboratories*)

*
Specifically, the domestic plants and research laboratories of Kyowa Hakko Kirin, Kyowa Medex, Kyowa Hakko Bio and Kyowa Pharma Chemical


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