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Environmental Preservation

Fiscal 2019 Environmental Performance Data

Fiscal 2019 Environmental Performance Data

Production volume and energy consumption intensity

Production volume and energy consumption intensity

  • * Compared to a value of 1 in fiscal 2013
  • The scope of calculation is only Denka (six domestic plants).
    The target for fiscal 2020 includes the Gosen Site.

The energy consumption intensity in fiscal 2019 was 90% of the fiscal 2013 level, continuing to improve at least 1% on an annual average basis. The fiscal 2020 figure is the initial target in the medium-term plan and includes the expected increase in production volume (excludes the impact of COVID-19). By implementing ongoing measures aimed at reducing energy consumption of each manufacturing site and enhancing the efficiency of in-house power generation, we will engage in more effective energy-saving initiatives.

CO2 emissions intensity

CO2 emissions intensity

  • The scope of calculation is only Denka (six domestic plants).
    The target for fiscal 2020 includes the Gosen Site.

In fiscal 2019, the CO2 emissions intensity index attributable to energy sources improved due to an increase in in-house hydroelectric energy and an improvement in the CO2 emissions intensity index of purchased electricity (Kyushu). In fiscal 2020, we will continue striving to improve our emissions intensity index through the operation of cogeneration facilities and energy conservation in our main products.

CO2 emissions
Trends in CO2 emissions
Fiscal year   2015 2016 2017 2018 2019 2020
  Unit Results Results Results Results Results Target
From energy sources Thousand tons 1,203 1,171 1,207 1,147 1,073 1,185
From non-energy sources Thousand tons 904 916 970 889 881 927
  • The scope of calculation for fiscal 2019 results is only Denka (six domestic plants) plus the Innovation Center.
  • * The data of fiscal 2018 and later includes that of the Head Office, branches and sales offices.
  • * The target for fiscal 2020 includes the Gosen Site.

CO2 emissions

CO2 emissions

In fiscal 2019, the CO2 emissions attributable to energy sources decreased due to an increase in in-house hydroelectric energy and an improvement in the CO2 emissions intensity index of purchased electricity (Kyushu). In fiscal 2020, we will continue striving to reduce emissions through the operation of cogeneration facilities and energy conservation in our main products.

PRTR Substances

We will endeavor to reduce emissions in a systematic manner with a focus on reducing emissions into the atmosphere.

PRTR Substances
Fiscal year   2015 2016 2017 2018 2019 2020
  Unit Results Results Results Results Results Target
Denka tons 74 87 78 77 78 74
Affiliates tons 3 4 8 7 8 7
  • The scope of calculation for fiscal 2019 results is: Denka (six domestic plants plus the Innovation Center)
    Domestic affiliates (six companies: Denka Polymer, Denka Seiken, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusyu Plastic Industry)
    The scope of calculation for fiscal 2020 targets is: Denka (six domestic plants plus Gosen Site (former Denka Seiken), Innovation Center)
    Domestic affiliates (five companies: Denka Polymer, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusyu Plastic Industry)

PRTR Substances

PRTR Substances

Final Disposal Amount and Waste Emission Ratio

On a non-consolidated basis, our efforts to reduce the final disposal amount of waste are ongoing, but as a result of adding a Malaysian company to the scope of overseas affiliates, on a Group basis, the final disposal amount of waste increased in fiscal 2019. Through the separation of waste and in collaboration with the mother factory in Japan and relevant departments, we will endeavor to reduce the amount of waste generated and promote recycling, and continue to achieve zero emissions as a Group.

Trends in disposal amount and waste emission
Fiscal year     2015 2016 2017 2018 2019 2020
    Unit Results Results Results Results Results Target
Denka Amount of waste generated tons 120,286 109,650 112,980 121,433 110,265 110,671
Denka Amount of final landfill waste tons 153 119 88 49 42 95
Denka Emissions ratio   0.13% 0.11% 0.08% 0.04% 0.04% 0.09%
Domestic affiliate Amount of waste generated tons 1,259 1,210 1,310 1,584 1,360 1,412
Domestic affiliate Amount of final landfill waste tons 92 89 108 196 161 154
Overseas affiliates Amount of waste generated tons 2,589 2,607 2,663 2,317 2,454 2,936
Overseas affiliates Amount of final landfill waste tons 285 268 346 285 630 662
Group’s total Amount of waste generated tons 124,134 113,467 116,953 125,334 114,079 115,019
Total of affiliates Amount of final landfill waste tons 377 357 454 481 791 816
Group’s total Amount of final landfill waste tons 530 476 542 530 833 911
Group’s total Emissions ratio 0.43% 0.42% 0.46% 0.42% 0.73% 0.79%
  • * Emissions ratio (%) = amount of final landfill waste / amount of waste generated x 100
  • * In Denka’s definition, “zero emissions” means an emission ratio lower than 1%.
  • The scope of calculation for fiscal 2019 results is a total of 23 bases: Denka (six domestic plants plus the Innovation Center)
    Domestic affiliates (six companies: Denka Polymer, Denka Seiken, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusu Plastic Industry)
    Overseas business bases (four bases in China, four bases in Singapore, one base in Vietnam, (additional) one base in Malaysia)
    The scope of calculation for fiscal 2020 targets is a total of 23 bases: Denka (six domestic plants, plus Gosen Site (former Denka Seiken), plus the Innovation Center)
    Domestic affiliates (five companies: Denka Polymer, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusu Plastic Industry)
    Overseas business bases (four bases in China, four bases in Singapore, one base in Vietnam, one base in Malaysia)

Waste emissions ratio

Waste emissions ratio

SOx

Although there is a variation in emissions due to changes in fuel and other factors, the amount of emissions has remained almost unchanged in fiscal 2019.

Fiscal year   2015 2016 2017 2018 2019 2020
  Unit Results Results Results Results Results Target
Denka tons 54 65 44 47 43 44
Affiliates tons 77 75 84 106 111 87
  • The scope of calculation for fiscal 2019 results is a total of 23 bases: Denka (six domestic plants plus the Innovation Center)
    Domestic affiliates (six companies: Denka Polymer, Denka Seiken, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusu Plastic Industry)
    Overseas business bases (four bases in China, four bases in Singapore, one base in Vietnam, (additional) one base in Malaysia)
    The scope of calculation for fiscal 2020 targets is a total of 23 bases: Denka (six domestic plants, plus Gosen Site (former Denka Seiken), plus the Innovation Center)
    Domestic affiliates (five companies: Denka Polymer, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusu Plastic Industry)
    Overseas business bases (four bases in China, four bases in Singapore, one base in Vietnam, one base in Malaysia)

SOx

SOx

Soot and dust

Emissions in fiscal 2019 decreased due to changes in fuel and repairs to dust collectors at affiliates.

Fiscal year   2015 2016 2017 2018 2019 2020
  Unit Results Results Results Results Results Target
Denka tons 88 61 65 81 76 67
Affiliates tons 10 15 16 16 7 7
  • The scope of calculation for fiscal 2019 results is a total of 23 bases: Denka (six domestic plants plus the Innovation Center)
    Domestic affiliates (six companies: Denka Polymer, Denka Seiken, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusu Plastic Industry)
    Overseas business bases (four bases in China, four bases in Singapore, one base in Vietnam, (additional) one base in Malaysia)
    The scope of calculation for fiscal 2020 targets is a total of 23 bases: Denka (six domestic plants, plus Gosen Site (former Denka Seiken), plus the Innovation Center)
    Domestic affiliates (five companies: Denka Polymer, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusu Plastic Industry)
    Overseas business bases (four bases in China, four bases in Singapore, one base in Vietnam, one base in Malaysia)

Soot and dust

Soot and dust

NOx

In fiscal 2019, emissions decreased due to reduced production of certain products.
In fiscal 2020, we will endeavor to reduce emissions by optimizing operations, etc.

Fiscal year   2015 2016 2017 2018 2019 2020
  Unit Results Results Results Results Results Target
Denka tons 4,148 4,192 4,365 4,037 3,751 4,103
Affiliates tons 700 760 840 679 492 558
  • The scope of calculation for fiscal 2019 results is a total of 23 bases: Denka (six domestic plants plus the Innovation Center)
    Domestic affiliates (six companies: Denka Polymer, Denka Seiken, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusu Plastic Industry)
    Overseas business bases (four bases in China, four bases in Singapore, one base in Vietnam, (additional) one base in Malaysia)
    The scope of calculation for fiscal 2020 targets is a total of 23 bases: Denka (six domestic plants, plus Gosen Site (former Denka Seiken), plus the Innovation Center)
    Domestic affiliates (five companies: Denka Polymer, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusu Plastic Industry)
    Overseas business bases (four bases in China, four bases in Singapore, one base in Vietnam, one base in Malaysia)

NOx

NOx

COD (BOD)

While there was a reduction in fiscal 2019 due to reduced production of certain products at the Omi Plant, the reduction effect from improvement of the wastewater treatment facility (started to operate in February 2016) has been maintained. (The fiscal 2020 target is the figure in the medium-term plan.)

Fiscal year   2015 2016 2017 2018 2019 2020
  Unit Results Results Results Results Results Target
Denka tons 578 358 326 234 178 262
Affiliates tons 9 7 8 7 6 7
  • The scope of calculation for fiscal 2019 results is a total of 23 bases: Denka (six domestic plants plus the Innovation Center)
    Domestic affiliates (six companies: Denka Polymer, Denka Seiken, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusu Plastic Industry)
    Overseas business bases (four bases in China, four bases in Singapore, one base in Vietnam, (additional) one base in Malaysia)
    The scope of calculation for fiscal 2020 targets is a total of 23 bases: Denka (six domestic plants, plus Gosen Site (former Denka Seiken), plus the Innovation Center)
    Domestic affiliates (five companies: Denka Polymer, Denka Elastlution, Hinode Kagaku Kougyou, Denka Azumin and Kyusu Plastic Industry)
    Overseas business bases (four bases in China, four bases in Singapore, one base in Vietnam, one base in Malaysia)

COD(BOD)

COD(BOD)

Water used
Denka
  Fiscal 2015 results Fiscal 2016 results Fiscal 2017 results Fiscal 2018 results Fiscal 2019 target Fiscal 2020 results
Water used (km3) 66,539 61,752 57,259 59,424 56,853 60,053
  7 bases 8 bases
Domestic and overseas affiliates
  Fiscal 2016 results Fiscal 2017 results Fiscal 2018 results Fiscal 2019 target Fiscal 2020 target
Water used (km3) 2,691 2,961 2,778 2,568 2,359
  14 bases 15 bases 16 bases 15 bases
Group’s total
  Fiscal 2016 results Fiscal 2017 results Fiscal 2018 results Fiscal 2019 target Fiscal 2020 target
Water used (km3) 64,443 60,220 62,202 59,421 62,412
  21 bases 22 bases 23 bases
Breakdown of emissions and transfers in fiscal 2019

The following table shows PRTR substances emitted and transferred exceeding one ton.

PRTR Substances No. Emissions Amount transferred
(to the outside)
Air Water Soil Landfill Total
Ethyl acrylate 3 2 0 0 0 2 0
n-Butyl acrylate 7 0 0 0 0 0 1
Acrylonitrile 9 3 0 0 0 3 13
Acetaldehyde 12 0 4 0 0 4 0
Aniline 18 0 0 0 0 0 3
Ethyl benzene 53 3 0 0 0 3 28
Ferric chloride 71 0 0 0 0 0 60
Calcium cyanamide 60% 77 0 0 0 0 0 3
Vinyl acetate 134 3 0 0 0 3 0
N,N-Dimethylformamide 232 0 0 0 0 0 17
Styrene 240 19 0 0 0 19 100
Water soluble copper salt 272 0 5 0 0 5 0
Toluene 300 15 0 0 0 15 37
Hydrogen fluoride and its water-soluble salt 374 2 2 0 0 3 40
n-Hexane 392 0 0 0 0 0 1
Benzene 400 0 0 0 0 0 9
Boron and its compounds 405 0 14 0 0 14 12
Methyl methacrylate 420 3 0 0 0 3 10
Total (tons/year)   51 24 0 0 75 335
Dioxin (mg-TEQ/year) 243 129 31 0 0 161 2
Scope of Calculation for Fiscal 2019 Results
Environmental Performance Data Denka’s six domestic plants *1 Denka Innovation Center Non-manufacturing sectors (Head Office, branches, etc.) Domestic affiliates (6) Overseas business bases (9)
Denka Polymer, Denka Seiken, Denka Elastlution, Hinode Kagaku Kogyo, Denka Azumin and Kyusyu Plastic*2 Merbau, Seraya, Tuas, Tuas South, Suzhou (Denka Advanced Materials and Denka Chemicals Development), Tianjin, Dalian and Vietnam, Malaysia
Overview of Environmental Impacts
Environmental Accounting
①Production Volume and Energy Consumption Intensity
②CO2 Emissions Intensity (from energy sources)
②CO2 Emissions
③Emissions of PRTR Substances
Note: Excluding emissions from Toyo Styrene and Taiyo Vinyl Corporation operating on the Chiba Plant’s premises
④Final Disposal Amount and Waste Emission Ratio
Note: Excluding emissions from Toyo Styrene and Taiyo
⑤SOx
⑥NOx
⑦Soot and dust
⑧COD(BOD)
  • *1 Including emissions from affiliates operating on the premises of Denka plants: Denal Silane Co., Ltd., and Denak Co., Ltd. at Omi Plant, ; TOYO STYRENE Co., Ltd., and Taiyo Vinyl Corp. at Chiba Plant
  • *2 Emissions from Kyusyu Plastic Industry Co., Ltd. has been included since fiscal 2017.
  • * Emissions from Denka Construction Solutions Malaysia have been included since fiscal 2019.
  • At present, some items presented herein encompass only emissions from Denka’s domestic business bases, including six domestic plants; however, we are steadily increasing the incorporation of emissions from domestic affiliates, overseas business bases and all other Group entities classified within the scope of consolidation in order to expand the scope of calculation for all items.
デンカ株式会社, デンカ株式会社 IR室
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