A company friendly to the Earth

The recycling industry is referred to as a “venous industry.”

Our bodies have arteries that carry blood from the heart throughout the body, and veins that work to return blood to the heart.
Therefore, manufacturers that make the products we use in daily life are called "artery industries."
However, if wastes generated in the process of manufacturing the products were sent back to the "heart" as they are, that would be a major problem.
In society, we play a role like veins in the human body, recycling wastes into fuels and materials and returning them to the manufacturers. Therefore, our industry is called a "venous industry".

Daiseki is an unsung hero of society.

Daiseki has engaged in the recycling business for over 60 years.

Daiseki was incorporated in 1958
and immediately began working in the recycling business,
before the word "recycle" had become commonplace.
Since first obtaining our license for industrial waste treatment business in 1972,
we have contributed to the construction of a recycling-oriented society
under the mission of "making the best use of limited resources."

A 'no-wastefulness' spirit is what keeps our recycling efforts going.
Founding period
1938-1970

Founding period

Our founder opened a spring production factory in 1938 at the age of 24, and afterward went through a series of successes and setbacks for a number of years. Then in 1958, at the age of 44, he established Daido Sekiyu Kagakukogyo Co., Ltd., the predecessor to what is now Daiseki.

Incubation period
1971-1990

Incubation period

Amid the spread of pollution damage, we held a strong belief in the future of the industrial waste treatment and recycling business.
Changed the company name to Daiseki.

Take-off period
1991-2000

Take-off period

In order to contribute to society through further growth and to earn trust as a public entity, distribute profits to stakeholders, and enhance our recognition and industry image nationwide, Daiseki had its stock listed.

Further development period
2001-present

Further development period

Daiseki is pursuing business as a Group in order to act as an environment-creating company on a wider scale.

The first specialist industrial waste treatment company to be listed on the stock exchange!

We want to contribute to the conservation of the global environment through our recycling business.
To achieve further growth, Daiseki became the first specialist industrial waste treatment company to be listed on the stock exchange!
For over 20 years since our listing in 1999, we have continually grown our business performance. (Our consolidated net sales have more than quadrupled between FY2001 and FY2023.)

The first specialist industrial waste treatment company to be listed on the stock exchange!

What does the company recycle?

The Daiseki Group recycles items that are essential to
manufacturing industries and the conservation of the global environment,
such as waste oil, wastewater, sludge, contaminated soil, plasterboard, lead,
residues from oil tank cleaning, and various other wastes and materials.

  • Waste oil, wastewater, and sludge recycling segment

    Waste oil, wastewater, and sludge recycling segment

  • Contaminated soil and plasterboard recycling segment

    Contaminated soil and plasterboard recycling segment

  • Lead recycling segment

    Lead recycling segment

  • Oil tank cleaning segment

    Oil tank cleaning segment

What items are received in the largest amounts for recycling?

Based on the amount of wastes received for recycling, liquids including waste oil, waste acid, and waste alkali are the largest in volume, followed by contaminated soil, sludge, and used lead batteries.

Amounts received for recycling
Daiseki recycles items that are essential to people's daily lives.
The amounts of wastes we generate every year is huge.

Recycling wastes into various resources through the Daiseki Group's advanced technological capabilities

*Sugimoto Trading Corporation and Sugimoto Paper Industry, our acquisition of which was announced on March 31, 2023, are not reflected in this.

Waste oil, wastewater, and sludge recycling segment

Waste oil recycling

Contributing to thermal recycling Contributing to reducing the consumption of limited fossil fuels

Waste oil recycling

In the waste oil segment, we recycle waste oil and solvents discharged from factories and dealers into recycled fuels. Recycled fuels are used as alternatives to fossil fuels such as coal and heavy oil.

Wastewater recycling

A top-ranking market share in Japan An expert in the recycling of difficult-to-treat wastewater

Wastewater recycling

In the wastewater segment, we perform "compound treatment", where multiple types of wastewater are combined to facilitate treatment without the use of additional chemicals, thus eliminating wasteful by-products and achieving a higher recycling rate.

Sludge recycling

Turning wastes into resources Recycling sludge into cement material

Sludge recycling

In the sludge segment, we mainly recycle sludge discharged from factories into cement materials. This recycled sludge is used by cement suppliers as a substitute for limestone and other cement ingredients.

The Daiseki Group's recycling rate is an amazing 90.0%
In what ways is Daiseki earth-friendly?

In what ways is Daiseki earth-friendly?

  • By purifying hazardous wastes, we contribute to protection of the global environment and biodiversity
  • Through our high recycling rate, we help prevent the depletion of limited natural resources
  • Through fuels that reuse inputs such as waste oil, we contribute to the reduction of fossil fuel consumption
  • Through recycling and treatment not based on combustion, we help achieve a carbon-neutral society

Contaminated soil, construction-related waste, and biodiesel recycling sector

Contaminated soil and construction-related waste recycling

Fast centralized processing by a single company Recycling contaminated soil and construction-related waste into cement materials, etc.

Contaminated soil and construction-related waste recycling

We recycle contaminated soil and construction-related waste generated in construction work into cement materials and more.

Daiseki Eco.solution Co.,Ltd.

Biodiesel recycling

Contributing to carbon neutrality Recycling waste cooking oils into biodiesel

Biodiesel recycling

By recycling waste cooking oils into biodiesel fuel usable as a substitute for petrodiesel, we contribute to carbon neutrality.

Daiseki Eco.solution Co.,Ltd.

Plasterboard recycling

Top-ranking shares in Japan and overseas Plasterboard recycling

Plasterboard recycling

We collect plasterboard from demolition sites, separate its components, and recycle it into materials to make plasterboard and recycled paper.

In what ways is Daiseki earth-friendly?

In what ways is Daiseki earth-friendly?

  • By purifying contaminated soil and construction-related waste, we contribute to the protection of the global environment and biodiversity
  • By recycling waste cooking oil into biodiesel fuel, we contribute to carbon neutrality
  • By recycling materials into cement and plasterboard ingredients, we help prevent the depletion of natural resources

Lead recycling and oil tank cleaning segment

Lead recycling

The only gas-fueled melting furnace in Japan Very safe and also helps reduce CO2 emissions

Lead recycling

We collect used lead batteries and separate, dissolve, and smelt their components to turn them into lead ingots. These lead ingots are used by battery manufacturers.

Daiseki-MCR Co.,Ltd.

Tank cleaning

Top-ranking shares in Japan and overseas Safe, unmanned tank cleaning work

Tank cleaning

To recycle crude oil sludge accumulated in large-scale crude oil tanks, we employ an advanced method called the COW method to discharge and collect the sludge safely in a short time frame, which is performed by a small number of workers who do not enter the tanks.

System Kikou Co.,Ltd.

In what ways is Daiseki earth-friendly?

In what ways is Daiseki earth-friendly?

  • Through lead recycling, we contribute to the prevention of environmental pollution and the utilization of lead as a useful resource
  • We carry out tank cleaning using environmentally friendly and safe work methods.

Through its nationwide network,Daiseki responds quickly to emergencies

Daiseki engages in its recycling business through a network of six corporate sites and six affiliated companies nationwide. In the event of a disaster, we mobilize our people and resources to the afflicted area at the request of the national or local government.
Daiseki has a robust system for maintaining a good environment for communities and for the Earth.

Daiseki has been recognized for its brave action in response to many major disasters.

Being a company friendly to the Earth is a future that the Daiseki Group seeks

CIRCULAR ECONOMY

Toward the achievement of a circular economy-oriented society

Further pursuing our no-wastefulness spirit
We do not only recycle resources and turn them into products, but also recycle any by-product that may be generated in the process.
As an "environment-creator", the Daiseki Group aims to realize a recycling-oriented society.

Purpose of the Daiseki Group

We seek to create a pleasant environment for people in the future!