ESG Library

The Environment

Scope of Reporting Environmental Data

The scope of reporting environmental data includes the Company and its consolidated subsidiaries and others * (66 companies in total). For details, please refer to the following link.

*The scope also includes UNEKURA MINING CO., LTD., which is highly relevant to the Company’s business.

• Subsidiaries and affiliates [PDF]

Environmental Management

Environmental Management System

Status of Environmental Management System Certification

Approximately 75% of the Group’s major production bases have established an environmental management system (EMS) structure for environmental management.

(Unit : Locations)

Certification	Domestic	Overseas
ISO14001	30	14
Eco-Action 21	7	0
Green Management Certification	1	0
Total	52

Material Balance

INPUT

			Unit	FY2019	FY2020	FY2021	FY2022	Year-on-Year
INPUT	Total energy input		PJ	18	17	18	17	▲3%
		Fossil fuel consumption	Thousand kL	121	113	115	108
		Purchased electric power	GWh	1,352	1,305	1,358	1,333
		Thermal power generation	GWh	5	1	1	1
		Biomass power generation	MWh	–	–	902	2,267
		Hydroelectric power generation	GWh	39	48	73	69
		Solar power generation	MWh	335	388	1,564	1,881
		Purchased steam flow	GJ	388	300	98	0
	Water resources		Million m3	106	100	103	101	▲2%
		Seawater	Million m3	93	88	90	89
		Besides seawater	Million m3	13	13	13	12	▲7%
	Raw material use		Thousand tons	1,058	972	1,089	1,041	▲4%
		Raw materials	Thousand tons	806	715	807	783
		Auxiliary materials	Thousand tons	162	179	192	173
		Heat treatment of items received	Thousand tons	89	77	89	83
		Packaging materials	Thousand tons	2	1	1	1
	Amount of waste received		Thousand tons	1,556	1,440	1,590	1,680	6%
		Waste	Thousand tons	1,420	1,304	1,476	1,557
		Statutory recycled items received	Thousand tons	96	98	74	93
		Contaminated soil	Thousand tons	40	38	40	29
		Fluorocarbon throughput	tons	552	604	779	917

The DOWA Group Business Activities

		Unit	FY2019	FY2020	FY2021	FY2022	Year-on-Year
Within business areas	Waste heat power generation	GWh	83	80	98	87	▲11%
	Waste heat utilization	TJ	427	443	1,007	934	▲7%

OUTPUT

					Unit	FY2019	FY2020	FY2021	FY2022	Year-on-Year
OUT PUT	Total greenhouse gas emissions				Thousand tons-CO2	1,903	1,815	1,724	1,713	▲1%
		Electric power source			Thousand tons-CO2	714	678	659	674
		Fossil fuel source			Thousand tons-CO2	330	314	326	313
		Waste source			Thousand tons-CO2	860	823	738	726
	Amount of electric energy sold				GWh	0.8	1.2	1.8	3.0	67%
	Product quantity				Thousand tons	945	886	965	928	▲4%
	Chemical substance emissions				tons	1,773	1,542	1,489	1,526	3%
	Drainage water discharge				Million m3	117	114	100	99	▲1%
	Excluding seawater				Million m3	24	27	11	11	1%
	Recycling and waste amount				Thousand tons	1,001	1,086	1,040	1,029
		Recycled amount			Thousand tons	634	612	645	638	▲1%
			Thermal recycling		Thousand tons	352	344	353	352	▲0%
				inside the Group	Thousand tons		45	45	41
				outside the Group	Thousand tons		299	309	311
			Material recycling		Thousand tons	282	269	291	286	▲2%
				inside the Group	Thousand tons		180	200	192
				outside the Group	Thousand tons		89	91	93
		Waste generated			Thousand tons	367	473	396	391	▲1%

Note:

• With regard to CO₂ emissions, in principle the DOWA Group seeks to multiply amounts of electricity purchased, fossil fuel consumed, and waste received by the emission factor put forth in the Law Concerning the Promotion of Measures to Cope with Global Warming.
• Regarding CO₂ emissions derived from waste received, because the calculation terms are as of the time this report was prepared, numbers may not necessarily match those reported to government agencies, which are calculated at a different time.
• Due to differences in the classification of waste in Japan and overseas and to the difficulty in setting an appropriate emission factor for waste received at overseas business sites, only the portion of CO₂ emissions originating from waste from domestic business locations is given.
• The figures reported in DOWA REPORT 2022 have been partially revised due to a review in tabulation.

Atmosphere and Water Management

Status of Management Targets for Reducing Environmental Impact

(Unit : Locations)

	Management Objectives Based on Agreements with Local Governments	Self-Imposed Management Goal
Atmosphere	5	13
Water management	3	18

Trend in Atmospheric Emissions by Substance

(Unit：tons)

Item	FY2020	FY2021	FY2022
HCI	25	39	36
NOx	439	480	530
SOx	163	124	150
Soot and dust	39	33	25

Trend in Water Emissions by Substance

(Unit : tons)

Item	FY2020	FY2021	FY2022
COD	360	423	222
BOD	66	50	52

Conservation of Environment

Managing the Use of Water Resources

Water Resources

Freshwater Usage (Quantity of Water Intake)

(Unit : Million m³)

	FY2020	FY2021	FY2022
River water	4.8	4.9	4.4
Industrial water	4.6	4.7	4.7
Ground water	2.8	2.8	2.5
Tap water	0.4	0.5	0.5
Total	12.7	12.9	12.1

Drainage Water

Total drainage in FY 2022 was 99 million m³, about the same amount as in FY 2021.

Initiatives to Reduce Water Withdrawals and Reduction Amount in FY 2022

（Unit : m³）

Initiatives	Reduction Amount
Reduction through intensity management	2,300
Reduction through in-process water reuse	10,000
Reduction through the use of rainwater in environmental measures	16,432

Climate Change

Greenhouse Gas Emissions

Amount of Contribution to GHG Emissions Reduction in Society through DOWA Green Action

(Unit : Thousand tons-CO₂)

	FY2018	FY2019	FY2020	FY2021	FY2022
Contribution to CO2 Emissions Reduction through Fluorocarbon Treatment	1,080	1,027	1,048	1,464	1,538

Trend in CO₂ Emissions

Group-wide greenhouse gas emissions in FY 2022 were approximately 1,713 thousand tons of CO₂, a decrease of 1% from FY 2021. Total energy use in FY 2022 decreased by about 3%, particularly in using high-calorie waste as a heat source to reduce fossil fuel use. On the other hand, although electricity consumption decreased, CO2 emissions from electricity increased slightly due to changes in emission coefficients.

(Unit : Thousand tons-CO₂)

		FY2018	FY2019	FY2020	FY2021	FY2022
Scope1	From fossil fuels	297.2	329.6	313.9	326.1	313.1
	From waste	876.2	859.7	822.9	738.2	725.9
Scope2	From electricity	762.1	714.1	678.1	659.5	674.4
Total CO2 emissions		1,935.5	1,903.4	1,814.9	1,723.8	1,713.4

(*) Coverage of 90% or higher, location-based

Utilization of Natural Energies

Hydroelectric Power Generation

In FY 2022, these power plants generated 68.8 GWh of electricity.

Solar Power Generation

In FY 2022, a total of 1,881 MWh of electricity was generated through solar power.

Biomass Power Generation

In FY 2022, we generated 2,267 MWh of electricity through biomass power.

Waste Heat Power Generation

We generated 87 GWh of waste heat power in FY 2022.

Resource Recycling

INPUT

Raw Materials

In FY 2022, raw material use amounted to 1,041 thousand tons, a year-on-year increase of approximately 4%. Of this, approximately 24% was recycled raw materials.

Waste Received

In FY 2022, the amount of waste received came to 1,680 thousand tons, of which approximately 88% was waste received from outside the Group. This was an increase of about 6.6% compared to the previous year.

OUTPUT

Recycling

In FY 2022, thermal recycling amounted to 352 thousand tons, almost the same as in the previous year, while material recycling totaled 286 thousand tons, a contraction of approximately 2%.

Waste Generated

In FY 2022, the amount of waste disposed of was 391 thousand tons, which is almost the same as in the previous year.

The volume of waste discharged includes incineration residue and other residues generated after contracted treatment in our main business of waste disposal.

(Unit : Thousand tons)

		FY2020	FY2021	FY2022
Domestic		427.3	378.2	378.0
Overseas		46.0	17.6	12.7
Total		473.3	395.9	390.7
	Slag	85.6	88.5	90.4
	Hazardous waste*	9.1	10.1	11.6

*Hazardous waste…Refers to waste as defined by the laws of each country. In Japan, it refers to specially-controlled industrial waste.