CSR / Environment

Effectively Using Water Resources

Effectively Using Water Resources

  • Self-evaluation: ★★★ Achieved more than targeted / ★★ Achieved as targeted / ★ Achieved to some extent
Fiscal 2017 Objectives Fiscal 2017 Achievements Self-Evaluation*
Water intensity: Improve by 22%
(baseline year: fiscal 2012)
Improved by 12%
(baseline year: fiscal 2012)
Priority Objectives for Fiscal 2018 Water intensity: Improve by 20%
(baseline year: fiscal 2012)

Sharp Group Reducing the Amount of New Water Used and Using More Recycled Water

Sharp is striving to make effective use of water resources by reducing the amount of new water (i.e., water from the water supply system) it uses and by increasing the use of recycled water. The volume of new water used by the Sharp Group in fiscal 2017 decreased by 1% (down 0.1 million m3) compared to the previous fiscal year. However, the improvement rate of water intensity was 12%, compared to the baseline year of fiscal 2012.

The Kameyama Plant (Kameyama, Mie Prefecture, Japan) and the Mie Plant (Taki District, Mie Prefecture, Japan) require a large amount of water in the production process for LCDs. At both plants, Sharp has adopted a closed-loop water recycling system that recovers and reuses 100% of the water discharged from the production process. Through measures such as this, the Sharp Group is maintaining a recycling rate* of at least 60%.

Looking ahead, Sharp will pursue further water-use efficiency and boost production efficiency in accordance with business expansion.

  • Recycling rate = Amount recycled ÷ (amount of new water + amount recycled)

Volume of New Water Used

Water Intensity (Baseline Year: Fiscal 2012)

New Water Used by Region (Fiscal 2017)

Water Recycling Rate

Case Study

Closed-Loop Water Recycling System

The Mie Plant (Taki District, Mie Prefecture) has adopted a closed-loop water recycling system to repeatedly recycle the large amount of water used for the production of LCDs. The water discharged from the production process contains chemicals that must not be released from the plant untreated. All of this water is collected and goes through steps such as biofiltration (the natural decomposition of chemicals using microorganisms) and filter filtration, before being purified with dedicated equipment. The resulting water is used repeatedly in production.

Closed-Loop Water Recycling Flow

Case Study

Reducing the Amount of New Water by Using Rainwater Tanks (Malaysia)

SMM, Sharp’s production base in Malaysia, is using rainwater tanks to reduce the amount of tap water it requires. Large tanks installed in the plant collect rainwater that is used in, for example, air conditioner cooling equipment and restrooms. This effort has reduced consumption of tap water by about 7,000 m3 a year.

Rainwater tanks installed in the plant