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Working towards a Recycling-based Society

 As a result of being a mass-production, mass-consumption and mass-disposal society, we now face many problems such as the depletion of resources and increasing waste.
 The Kubota Group sees working towards a recycling-based society as one of its materiality, and has been advancing initiatives to promote “reduce” (reducing the amount generated), “reuse” (internal recycling and reuse), and “recycle” (improving the recycling ratio) of waste, in addition to initiatives to promote the effective use of resources and resource saving.

Activities towards achieving SDGs

Related SDGs and targets
Major Activity Content
  • Promotion of measures to reduce resource waste and losses, focusing on JIT and automation
  • Thorough execution of separate management, promotion of recycling
  • Thorough execution of appropriate waste material management, risk management, etc.
2020 Activity Targets (KPIs)
  • Medium-Term Environmental Conservation Targets 2020:
     - Waste material discharge intensity at global production sites: 10% improvement compared to the base year 2014
     - Waste material recycling rate: Maintein 99.5% or more in Japan, Maintein 90.0% or more overseas

Medium-Term Environmental Conservation Targets 2020 and the Results for RY2018

Action item Management indicator*1 Scope Base RY Target for RY2020 Result of RY2018 Achievement Status
Reduce waste Waste discharge per unit of production Global production sites 2014 -10% -13.4% We are promoting thorough sorting of wastes and converting waste into valuable materials.
Recycling ratio (Japan)*2 Production sites in Japan - Maintain 99.5% or more 99.7% We are maintaining the existing level through continuous efforts.
Overseas production sites - Maintain 90.0% or more 91.9% We are promoting the reduction of the amount of waste sent to landfills by changing contractors.
  • The figures per unit of production represent the intensity of the environmental load per unit of money amount of production. The exchange rate of the base year is used when translating the money amount of production of overseas sites into Japanese yen.
  • Recycling ratio (%) = (Sales amount of valuable resources + External recycling amount) / (Sales amount of valuable resources + External recycling amount + Landfill disposal) × 100. Heat recovery is included in the external recycling amount.

Waste, etc. from Business Sites

1. Waste, etc. discharge

 In RY2018, the waste discharge amount was 113 kilotons, an increase of 5% compared to the previous reporting year. Meanwhile, the waste discharge per unit of sales was about the same level as in the previous reporting year. While we have continued to promote measures inside and outside the company aimed at recycling, as well as reducing and dehydrating waste liquid, waste discharge increased, mainly due to the increase of production volume at overseas cast iron production sites.
 Of the waste, etc. discharge amount in RY2018, the amount of hazardous waste discharge was 5.3 kilotons (2.6 kilotons in Japan and 2.7 kilotons overseas).

Trends in Waste, Etc. (including valuable resources) and Waste Discharge per Unit of Sales
  • Landfill disposal = Direct landfill disposal + Final landfill disposal following external intermediate treatment
  • Waste discharge per unit of consolidated net sales. The Kubota Group adopted International Financial Reporting Standards (IFRS) instead of accounting principles generally accepted in the United States of America from RY2018.
    Waste discharge = Resource recycling and Volume reduction + Landfill disposal

Waste Recycling and Treatment Flow (RY2018 results)

Waste Discharge by Region   Waste Discharge by Business
Waste Discharge by Type

Waste, Etc. Discharge by Treatment Category
Japan   Overseas

2. Trends in Recycling Ratio

 The resource recycling ratio in RY2018 was 98.6% in Japan, maintaining about the conventional level. The recycling ratio overseas was 90.0%, a 0.4-point improvement compared to the previous reporting year, due to ongoing promotion of the recycling of casting dust. We will make continuous efforts to further improve the resource recycling ratio.

Trends in Recycling Ratio

3. Measures to Reduce Waste

 The Kubota Group has established its Medium-Term Environmental Conservation Targets 2020 and is working on the reduction of waste discharge from its business sites and the improvement of the recycling ratio. The Group has been promoting various measures, such as the thorough separation of waste according to the type and disposal method of waste, the introduction of returnable packing materials, and shared waste recycling between sites. The Group is also committed to the reduction of hazardous waste through ensuring thorough monitoring and management thereof.
 In RY2018, at cast iron production sites, which generate a large amount of waste, the Kubota Group continuously promoted the internal and external reuse of casting sand, and the conversion of waste into valuable resources out of the sand. With regard to the dust from the melting process that was treated as waste previously, the Group has also reduced 240 tons of waste annually by converting those with high iron content into valuable materials. Machinery production sites have been continuously promoting the reduction of the amount of sludge generated in the painting booth and waste oil or oil-containing wastewater.
 As a result of the efforts toward achieving the Medium-Term Environmental Conservation Targets 2020 for waste reduction, global production sites achieved a reduction of 3,800 tons of waste in RY2018 compared with the case where countermeasures were not implemented from the base year (RY2014). The economic effects of these measures reached 59 million yen compared to RY2014. Waste discharge per unit of production in RY2018 improved by 13.4% compared to RY2014. The recycling ratio was 99.7% at production sites in Japan and 91.9% at production sites overseas, both achieving the targets of the Medium-Term Environmental Conservation Targets 2020.
 Moreover, production sites in Japan have raised the implementation rate of electronic manifests to 93.8%, enabling real-time assessment of the reduction effects. We will continue to promote the reduction of waste through promoting sharing of good reduction practices and visualization of waste by utilizing electronic manifests.

Internal recycling of casting sand
Keiyo Plant: Reducing the amount of waste discharge through the internal recycling of wasted casting sand

Reducing Plastic

 Marine plastic pollution, used plastic that flows down rivers and waterways to be discharged along coasts and oceans, has become a global issue. The Kubota Group’s business sites promote the 3Rs and efforts to convert the plastic waste generated through their business activities into valuable resources.
 As a Group company involved in the manufacture and sale of plastic pipes and couplings, Kubota ChemiX Co., Ltd. manufactures and sells recycled triple layer pipes and recycled foamed triple layer pipes made using recycled materials (rigid PVC pipe waste, PVC made of recycled couplings) to promote the effective use of resources. Meanwhile, Kubota Environmental Service Co., Ltd., a Group company involved in business activities related to construction, maintenance, and operations management of water and environmental facilities, provides engineering services for plastic to fuel facilities that pulverize and sort plastic waste for use as fuel.
 The Kubota Group works to reduce the release of plastic through initiatives including the effective use of resources and reducing waste throughout the business value chain.

 Plastic to fuel facility
 Kubota Environmental Service Co., Ltd.

Waste, etc. Generated from Construction Work

 The type and the amount of waste generated from construction work vary depending on the type of work being done, resulting in fluctuation in the amount of discharge, and the recycling and reduction ratio. However, the Kubota Group maintains a high recycling and reduction ratio for specific construction materials.

Trends in Discharge, and Recycling and Reduction Ratio of Construction Waste, Etc. (Japan)

Handling and Storage of Equipment Containing PCB (in Japan)

 Transformers, capacitors and other equipment containing polychlorinated biphenyls (PCB) are properly reported, stored and handled based on the Japanese Act on Special Measures concerning Promotion of Proper Treatment of PCB Wastes, and the Japanese Waste Management and Public Cleansing Act. Waste with a high concentration of PCB is being disposed of steadily, beginning with sites where PCB-treatment facilities are available. Waste with a low concentration of PCB will be properly disposed of by the disposal deadline of March 2027.
 PCB-containing equipment in storage is thoroughly managed by multiple means, such as the locking of storage cabinets, periodic inspection, and environmental audits.

Related Information

Kubota's research and development values thorough hands-on approach. As an agricultural and water expert, we challenge and attain the future of food, water, and the environment, realizing our customer's needs.

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