SustainabilityEnvironmentWaste reduction and environmental conservation

TOCALO is constantly monitoring the environmental impact of its business activities, products, services, and strive to prevent pollution.
Through the reduction of waste and the appropriate management of hazardous substances, TOCALO is committed to continuous improvement.

Appropriate management of chemical substances

In accordance with the PRTR Law, we report the amounts of chemical emissions and transfers.

In fiscal 2022, TOCALO reported the amount of designated chemicals released into the environment and transferred for six substances in accordance with the PRTR Law (Pollutant Release and Transfer Register: Chemical Substance Release and Transfer Notification System). The emissions met all regulatory standards under the act.

Release and transfer volume of PRTR Law, type 1 designated chemicals in fiscal 2022
  Released amount (kg) Transferred amount (kg)
  Emission intothe
Discardinginto the soil at
place of
Landfilldisposal at
place of
to sewerage
Chrome and
trivalent chrome compounds
10.2 0 0 0 0 6,230
and its compounds
802 0 0 0 0 1,800
Toluene 1480 0 0 0 0 670
Nickel 9.8 0 0 0 0 8,820
Vanadium compound 1.9 0 0 0 0 0
Boron compounds 0 0 0 0 4.9 10,500
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  • Following the PRTR Law, the volume of vanadium compounds, for which we submitted a report in fiscal 2021, was reported as zero in fiscal 2022 because the volume handled that year was less than 1 ton. (The PRTR Law requires reporting when the annual amount of vanadium compounds handled at a business site exceeds 1 ton.)
  1. Toluene emissions into the atmosphere amounted to 480 kilograms.
    Toluene is a substance contained in organic solvents (such as thinners), and the emission volume is calculated by estimating the amount of volatile organic compounds (VOCs) evaporated based on the natural drying method used.

Waste Reduction

We are properly disposing of all types of waste, from general waste to specially controlled industrial waste.

  • General waste
    Paper constitutes the majority of business-related general waste, and we are committed to reusing and recycling paper. When confidentially is an issue, we work with the paper manufacturers to dissolve materials chemically.
  • Industrial waste
    Waste oil accounted for 39% of our industrial waste, which was the largest component. Waste oil emits from cooling water that is added to grinding oil for use as a coolant with wet grinders (machines for roll grinding). More than 90% of the water is tap water. After disposal, it is used at cement factories and elsewhere to adjust combustion temperature.
    The other main components of industrial waste are sludge (21%), mixed waste (10%), slag (9%), waste alkali (7%), glass and ceramic scraps (6%), and waste plastics (5%).
    Sludge contains large amounts of dust generated from thermal spraying. Although thermal spray dust is dry, it is treated as sludge with strict disposal standards.
    Mixed waste is defined as a mixture of several types of waste that is difficult to sort.
    Slag is a mineral slag, and wet slag from industrial operations is considered as sludge which is strictly controlled in waste treatment. TOCALO disposes as sludge any slag tailings that are wet or had the potential of getting wet.
    Most of the alkaline waste is washing solution from TD treatment that contains a small amount of sediment. The solution is weakly alkaline due to its boron content. In certain instances, it may be treated as sludge.
    Glass and ceramic scraps, such as refractory bricks, contain ceramic-based grinding materials that cannot be recycled.
    Waste plastics include material containers and secondary materials, as well as waste paper and wood scraps that contain oil. Our recycling and other efforts resulted in less waste than in the previous year.
  • Specially controlled industrial waste
    Most of this waste is dust generated by thermal spraying using chromium-containing materials (such as stainless steel) and collected by a dust collector. When the dust volume exceeds the regulatory limit in dissolution tests, it is disposed of as specially controlled industrial waste.
Changes in total waste emissions
Changes in total waste emissions
Breakdown of specially controlled industrial waste
Breakdown of specially controlled industrial waste
  • Results for hazardous specially controlled industrial waste in fiscal 2020 have been revised.
Changes in total waste emissions/sales
Changes in total waste emissions/sales


Spreading environmental awareness and developing environmentally friendly activities

Kohei Ishizuka (Miyagi Technical Service Center, FS Manufacturing Section)

Kohei Ishizuka (Miyagi Technical Service Center, FS Manufacturing Section)

I am in charge of process management and industrial waste treatment in the Manufacturing Section. In April 2023, I was put in charge of the Miyagi Technical Service Center (Miyagi TSC) ‘s Environment Secretariat. In addition to my own tasks, I also strive to understand the company's operations and contribute as a team member to reduce environmental impact.

I’m relatively new to environment-related work. Right now, the biggest challenges for me are finding information about changes in environmental and waste-related laws and regulations and how to incorporate the changes into our internal business processes. I also think it’s important that all of the employees at our operating sites have a similar awareness of environmental issues as I do, but it’s been difficult to establish a shared awareness.

My own perception has changed since I was put in charge of the environment. As a member of the Manufacturing Section, I was only thinking about how to make a good product, but now I also think about what we are emitting when we make a product and how much of an impact those emissions can have on the environment. I’ve also changed some of my smaller daily habits. For example, I now look at documents on a computer as much as possible to reduce paper usage.

My goals are to incorporate actions that reduce our environmental impact into our business processes and to establish environmental awareness among not just the people in charge, but all employees. I also want everyone at our operating sites to engage in environmentally friendly conduct.


Introducing translucent clear paper files

We produce clear file folders printed with our corporate mascot. The folders used to be made of transparent plastic, but to reduce the impact of plastic on the environment, in fiscal 2022 we started producing semi-transparent file folders made of paper.

We wanted a material that would provide the benefit of plastic’s transparency and the environmental friendliness of paper, and came up with the idea of making file folders using semi-transparent tracing paper.

We started by trying the folders in-house, and now are sharing them outside the Company, such as by inserting them in the pamphlets we give out at exhibitions.
The clear paper file folders are even better than plastic folders in many ways because they last longer and are stronger. Every day, we are thinking of ways to make the ideal folder that is easy to use and good for the environment. The clear paper folders are giving us more opportunities to think about what we can do to protect the earth.

Clear file folders made of paper
Clear file folders made of paper

Recycling of miscellaneous recyclable paper at Headquarters (Kobe City)

Kobe City has been implementing an initiative for the recycling of used paper (miscellaneous recyclable paper) that is emitted by business operators targeting the business operators of Port Island and Rokko Island, and the TOCALO Headquarters (within Kobe City Port Island) has been participating in this initiative since March 2020. A large amount of shredder dust is generated at the Headquarters, and this is recovered and transported to designated locations in Kobe City by contracted transport companies.

Air pollution prevention

Dust generated in the thermal spraying process is safely collected before it can be released into the atmosphere.

TOCALO's main products modify surfaces by way of thermal spraying, which uses powder or wire as a material. The material is fed into a combustion flame or plasma jet, where it is melted and then sprayed to form a coating.
Powders that did not melt or did melt but were not deposited when sprayed become dust. Dust collectors collect the dust before it can be released into the atmosphere. (Photo)

Thermal spraying is a dry process and the collected dust is mostly dry, so there is no need for waste liquid treatment. A duct draws the airborne dust in a thermal spray booth into the dust collector where it is filtered with internal filters made of woven and nonwoven fabrics. The fine layer of dust that collects on the filter surface becomes thick can clog the filter, causing the filter to lose suction pressure and reducing the efficiency of the dust collection. Using a pulse jet, compressed air is used at regular intervals to remove the dust and maintain process efficiency.

Dust that can be reused is recycled, and dust that cannot be reused becomes industrial waste.
As of the end of fiscal 2022, we have not confirmed the generation of sulfur oxide (SOx) from our operations.

Cartridge-type dust collector
Cartridge-type dust collector

Soil and water pollution prevention

Soil and water pollution prevention is particularly critical because soil and water quality directly affect surrounding communities.

Processes at the Kobe Plant use surface modification technologies other than thermal spraying. Wastewater that requires detoxification treatment is detoxified at a coagulating sedimentation treatment facility prior to being discharged into the sewage system. As a precaution for an accidental leak of wastewater, the plant has installed pipes and concrete walls to prevent and quickly and visually detect leaks. Anti-spreading materials are also in place to prevent leaks from spreading. In addition to periodic monitoring and measurements, the equipment is controlled by a rigorous system compliant with applicable laws and regulations.

Plant wastewater treatment steps (coagulating and sedimentation treatment facility)
Plant wastewater treatment steps (coagulating and sedimentation treatment facility)

Noise countermeasures

Noise barriers have been installed and noise measurements are also carried out regularly.

The main types of equipment that generate noise of a concerning level are air compressors, dust collectors, and other blowers. However, in addition to this equipment, there are other noise sources, and we are taking steps to avoid disturbing the neighborhood by implementing soundproofing measures such as installing these facilities inside buildings and installing special soundproof walls.
In addition, we regularly measure noise levels to ensure that our facilities and equipment are within regulatory limits.

Noise measurement using specialized equipment
Noise measurement using specialized equipment

Supporting environmental organizations

TOCALO has begun actively supporting the following environmental organizations as another way to help protect the global environment through our activities. We are providing support for greening, protecting biodiversity, and other environmental activities.

In May 2023, we donated ¥500,000 yen to the Green Fund managed by the National Land Afforestation Promotion Organization.
The Green Donation Funds is used for forest maintenance in communities in Japan and overseas as well as for disaster relief, forest environment education, and to support greening efforts overseas. We will continue to support efforts to promote forest conservation and greening both in Japan and overseas.

In August 2023, TOCALO contributed ¥200,000 to WWF Japan.

You can find out more about TOCALO’s contributions to society at the following links. ​
For further information, click here:

Green Donation Funds:
WWF Japan:

Certificate of Appreciation from the President of the National Land Afforestation Promotion Organization
Certificate of Appreciation from the President of the National Land Afforestation Promotion Organization