Hitachi Construction Machinery

Global

Effective Use of Water

To contribute to the effective utilization of water resources, Hitachi Construction Machinery group is working to reduce and reuse/recycle the water usage (including fresh water) which accompanies business activity. Also, we continue appropriate maintenance and management of waste-water resulting from operations with the goal of preventing water contamination.

With respect to environmental management, our system is centered around Sustainability Promotion Division, which comprehensively manages and promotes environment, social and governance matters for the entire Group as well as discloses information as appropriate. The Sustainability Promotion Committee, which meets biannually, is comprised of members including the president and executive officers. It carries out deliberations and approvals on ESG matters related to management decisions, including our response to climate change and water use reduction.

In FY 2019, HCM Group reduced water use by 29% compared to the previous year, thanks to its water-saving measures such as the promotion of increasing the lifespan of the water used in painting facilities and expansion of the use of recycled water.

Total Range : All Domestic and Overseas Production/non-Production Bases for Consolidation
(Bradken has been included in the results since FY 2018)
Water for daily use (canteen, bathroom, etc.) is excluded from 2019

 Types of water  Water intake volume (km³) Criterion, Method, Prerequisite, Other
Tap water 759 Measured values
Industrial water 83 Measured values
Underground water 746 Measured values, calculated values
Other 0

Total Range: All Domestic and Overseas Production/Non-production Bases for Consolidation

 

The HCM Group considers protecting the water bodies that receive the effluents from factories is an important issue.
In order to prevent water contamination, we have put in place independent standard values even more stringent than the pollution prevention agreement values set by national and local governments, and in addition to daily water quality inspections, we have installed automated measuring devices which can be regularly monitored, implemented a strict management structure, and maintain and manage the quality of waste water from operations.
We strictly control water discharged through wastewater treatment systems, and install biological treatment depending on wastewater quality.

Total Range : All Domestic and Overseas Production/non-Production Bases for Consolidation

 

We regularly monitor BOD and COD emissions complying with pollution prevention agreement values set by each national and local government.

FY2017 FY2018 FY2019
BOD Emission 3.1 t 6.2 t 3.9 t
COD Emission 4.5 t 6.6 t 5.7 t

Total Range: Main Domestic and Overseas Production Bases for Consolidation

Waste water destination types Waste water volume (km³) Water quality (incl. processing method) Criterion, Method, Prerequisite, Other
Rivers 403 Compliance with the legal drainage criteria of each country/local government, water purification at waste water processing plants. Measured values, calculated values
Sewers 665 Compliance with the legal sewage criteria of each country/local government Measured values, calculated values
Underground infiltration 330 Calculated values
Waste composition 0.5 Calculated values
Evaporation, etc. 1.8 Calculated values
Other 0

Total Range: All Domestic and Overseas Production/Non-production Bases for Consolidation

Total Range : Main Domestic and Overseas Production Bases for Consolidation

 

Response to Water Risks

In order to identify regions where there is a high-water stress level during business activities, the HCM Group uses the AQUEDUCT tool released by the World Resources Institute to quantify the water stress level at all their production facilities both domestic and international, and identify regions of high water stress.

Company General Waster Risk
Hitachi Construction Machinery Tsuchiura Works Medium to High Risk (2-3)
Hitachi Construction Machinery Kasumigaura Works Medium to High Risk (2-3)
Hitachi Construction Machinery Hitachinaka Works Low to Medium Risk (1-2)
Hitachi Construction Machinery Hitachinaka-Rinko Works Low to Medium Risk (1-2)
Hitachi Construction Machinery Bansyu Works Medium to High Risk (2-3)
Hitachi Construction Machinery Ryugasaki Works Medium to High Risk (2-3)
Hitachi Construction Machinery Tierra Low to Medium Risk (1-2)
Hitachi Construction Machinery Camino Medium to High Risk (2-3)
Hitachi Sumitomo Heavy Industries Construction Crane Medium to High Risk (2-3)
Tadakiko Medium to High Risk (2-3)
Niigata Material Low to Medium Risk (1-2)
Shin Tohoku Metal Low to Medium Risk (1-2)
Hitachi Construction Machinery (China) Low to Medium Risk (1-2)
Hefei Rijian Shearing Low to Medium Risk (1-2)
Tata Hitachi Construction Machinery Company Private Limited High Risk (3-4)
PT Hitachi Construction Machinery Indonesia High Risk (3-4)
Hitachi Construction Machinery (Europe) N.V. Low to Medium Risk (1-2)
Hitachi Construction Truck Manufacturing Ltd. Low to Medium Risk (1-2)

Advanced water-saving initiatives are being rolled out at the overseas locations Tata Hitachi Construction Machinery Company Private Limited and PT Hitachi Construction Machinery Indonesia, as well as the Japan-based Hitachi Construction Machinery Tierra near Lake Biwa, all of which have relatively high water risk.

THCM water pipes

Tata Hitachi Construction Machinery implemented countermeasures to remove unnecessary water pipes, in addition to implementing improvements to water pipes as a countermeasure against leakage. Also, through such water saving activities as optimization of the water quantity used in the watering of green areas, and the installation of auto-sensors onto toilets etc., water usage was reduced by 7% (7500m3) compared to the previous year.

HCMI water treatment

At HCM Indonesia, starting in FY2012, an RO (reverse osmotic membrane) water purification device was introduced, which stabilizes the coating quality by removing mineral deposits which obstruct the electro-deposition coating.
Also, they reuse water via a cyclical water treatment system.

ティエラ滋賀工場2

Hitachi Construction Machinery Tierra upgraded their small-item painting equipment (water-circulating facilities) and refreshed their boilers (miniaturized equipment and pertinent installation) to reduce their environmental footprint, reducing their FY 2012 water usage by 20,000m3.Dealers are also continuing to reduce specific water consumption for production output by at least 70% (compared to FY 2005).

Ongoing Initiatives

In order to recycle water, we will directly support leakage measures and recycle rate improvements with a focus on companies with especially high levels of water usage.

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