CSR

An outline of
DYNAX's
CSR activities

Environmental Performance Data

Water Quality

At the Tomakomai Plant, we conclude a pollution prevention agreement with related municipalities, measure and report on the quality of factory wastewater every month, and strive to preserve the water quality of the area.

Item

Agreement Value

Performance in 2024

Max

Min

Avg.

Total drainage

≦ 4,000㎥/day

3,516

2,660

3,133

Hydrogen ion (pH)

≧ 5.8 ≦ 8.6

7.4

6.8

7.1

Biochemical Oxygen Demanded amount (BOD)

Max

≦ 80㎎/L

62.0

9.5

28.3

Daily avg.

≦ 70㎎/L

51.5

9.4

25.5

Amount of suspended solids (SS)

Max

≦ 80㎎/L

17.0

3.0

7.1

Daily avg.

≦ 70㎎/L

11.0

3.0

6.1

Normal hexane extract
(Mineral oils) content

≦ 5㎎/L

< 0.5

< 0.5

< 0.5

Number of Escherichia coli

≦ 3,000/㎤

160.0

0.0

23.0

Ammonia, Ammonium
compounds, Nitrite and
Nitric acid compounds

≦ 10㎎/L

6.0

2.0

3.6

PRTR Target Substance

The emissions and transfers of substances subject to the PRTR Law in fiscal 2024 are as follows:

unit: ton/year

Location

Substance

Discharged

Transferred

Atmospheric Emissions

Discharge into public waters

Processed Waste

Sewerage

Chitose Plant

Toluene

3.9

0.0

0.1

0.0

Formaldehyde

0.6

0.0

0.0

0.0

Ethylenediaminetetraacetic acid and its potassium and sodium salts

0.0

0.0

0.0

1.7

Tomakomai Plant

Formaldehyde

1.1

0.0

0.0

0.0

1,3-Dichloro-2-propanol

0.0

1.0

0.1

0.0

Ethylenediaminetetraacetic acid and its potassium and sodium salts

0.0

3.8

0.0

0.0

FY2020

FY2021

FY2022

FY2023

FY2024

CO2 Emissions
(tons of CO2)

31

33

31

30

25

Energy Used
(petroleum:k-kl) (Excluding non-fossil energy)

14

15

15

15

11

Energy Used
(petroleum:k-kl) (Including non-fossil energy)

-

-

-

15

13

Waste Emissions
(tons of CO2)

4

4

4

4

4