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Environmental Preservation

Contribution to the Development of a Recycling-Oriented Society

Updated in October 2022

Contribution to the Development of a Recycling-Oriented Society

At our Omi Plant (Itoigawa, Niigata Prefecture), we are promoting recycling in cement production by replacing some of the natural minerals usually used as raw materials and thermal energy with waste and byproducts.
As part of our ongoing activities for zero emissions, the Omi Plant also accepts waste and byproducts from our domestic production bases throughout Japan and makes effective use of them as raw materials and as a thermal energy resource for cement, thereby keeping external emissions as low as possible.
Looking ahead, by taking full advantage of a variety of technological elements suited for the processing of waste and byproducts, and pushing ahead with recycling, we will continue to contribute to a recycling-oriented society.

Recycling of Waste and Byproducts in Cement Production

In our recycling operations at the Omi Plant, we accept and utilize waste and byproducts from the auto, power, steel and other industries, as well as urban garbage incinerator ash and sewage sludge generated by local governments, as raw materials for cement and as an alternative thermal energy resource. By recycling waste and by-products from various industries, we help extend the life of final disposal sites and reduce the burden on the environment.
Looking ahead, by taking full advantage of a variety of technological elements suited for the processing of waste and byproducts, and pushing ahead with recycling, we will continue to contribute to a recycling-oriented society.

Breakdown of Waste Accepted in Fiscal 2021

Breakdown of Waste Accepted in Fiscal 2021

Volume of Waste Accepted (total and per unit of production)

Volume of Waste Accepted (total and per unit of production)

Recycling Process Flowchart

Recycling Process Flowchart

デンカ株式会社, デンカ株式会社 IR室
Environmental Preservation
Environmental Policies
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Environmental Policies

Caring for the Global Environment Denka undertakes the preservation of...

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Initiatives to Achieve Carbon-Neutral Status
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Initiatives to Achieve Carbon-Neutral Status

We are strengthening our environmental management with the aim of achievi...

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Initiatives to Achieve Carbon-Neutral Status
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Stance on Environmental Management

Aiming to Achieve “Net Zero” in Terms of CO2 Emissions by Fiscal 2050 Whi...

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Medium-Term Environmental Plan
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Medium-Term Environmental Plan

In fiscal 2021, energy and CO2 emissions intensity was worse than the pre...

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Initiatives Aimed at Curbing GHG Emissions and Reduction Targets for GHG Emissions
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Initiatives Aimed at Curbing GHG Emissions and Reduction Targets for GHG Emissions

Initiatives Aimed at Curbing GHG Emissions To contribute to the realiz...

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Climate Change: Risks and Opportunities
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Climate Change: Risks and Opportunities

Updated Scenario Analysis and Our Response to Climate Change-Related Risk...

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Promoting Climate Change Countermeasures
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Responding to the TCFD Recommendations

Our Support of the Task Force on Climate-Related Financial Disclosure (TC...

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Promoting the Use of Clean Energy
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Promoting the Use of Clean Energy

Expansion of Renewable Energy Sources and Introduction of Power Generatio...

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Promoting the Use of Clean Energy
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Initiatives in Electric Power Generation

Hydroelectric power plants around Omi Plant and their maximum outputs ...

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Government Subsidies Related to the Environment and Energy
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Government Subsidies Related to the Environment and Energy

Utilization of Government Subsidies Related to the Environment and Energy...

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The Denka Group’s Policies on the Prevention of Environmental Pollution
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The Denka Group’s Policies on the Prevention of Environmental Pollution

Denka strives to accurately gauge the volume of environmental load substa...

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Efforts to Conserve Biodiversity
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Efforts to Conserve Biodiversity

Along with climate change, biodiversity is becoming increasingly importan...

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Preservation of Water Resources
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Preservation of Water Resources

Background The issue of limited water resources is recognized as a g...

Environmental Preservation
Contribution to the Development of a Recycling-Oriented Society
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Contribution to the Development of a Recycling-Oriented Society

At our Omi Plant (Itoigawa, Niigata Prefecture), we are promoting recycli...

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Initiatives to Counter the Plastic Waste Issue
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Initiatives to Counter the Plastic Waste Issue

The Denka Group is proactively developing and providing innovative soluti...

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Environmental Accounting
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Environmental Accounting

Conservation Costs The main items of environmental investment in fisca...

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Overview of Environmental Impacts
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Overview of Environmental Impacts

Overview of Environmental Impacts (totals for all production sites in...

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Fiscal 2021 Environmental Performance Data
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Fiscal 2021 Environmental Performance Data

Production volume and energy consumption intensity The energy intensit...

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Performance data of each site
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Performance data of each site

Fiscal 2021 Emissions of major substances and percentage of water usage ...