Kelestarian

Penggunaan Sumber Air yang Cekap

In line with our Basic Environmental Protection Policy and Environmental Vision 2050, Fuji Electric aims to contribute to the realization of a recycling-oriented society. To achieve this, we are promoting activities with the goal of realizing a circular economy throughout our entire supply chain.

Penggunaan Sumber Air yang Cekap

The issue of water resource depletion has become a global concern. Therefore, in addition to complying with wastewater standards, Fuji Electric has set targets for reducing water intake per unit of sales to promote the efficient use of water resources. In fiscal 2024, our company-wide water intake increased by 2.8% year-on-year, primarily due to increased semiconductor production at our Malaysia Factory. Nevertheless, our company-wide water intake per unit of sales remained at 900 m³ per 100 million yen.

To utilize water resources more efficiently, we have also been advancing water recycling efforts. In order to improve our recycling rate, we installed additional recycled water production facilities at Matsumoto Factory, which began operations in December 2023. However, due to increased production at our Malaysia Factory, the water recycling rate for fiscal 2024 remained at 21.0%, the same as the previous year.

Water Stress Risk Assessment

Fuji Electric has conducted an assessment using Aqueduct 4.0* to identify whether any of our production sites worldwide are exposed to water stress risks. As a result, certain sites in the Asian region have been identified as having high water stress risk; however, it has been confirmed that the water intake volume at these sites is relatively low.

Our Shenzhen Factory in China, which produces photoreceptors, was evaluated with an Aqueduct 4.0 score of 2 out of 5, indicating a low-risk area. However, the region does not have large rivers, and the stability of water supply is generally considered a challenge due to increased economic activity and population growth. In fact, from 2021 to 2022, a severe drought occurred as a result of the La Niña phenomenon.
Taking these conditions into consideration, our company has classified the Shenzhen Factory as a water risk watchlist site and has implemented the following measures:

Through these efforts, we are working to strengthen the stable water supply system in the Shenzhen region throughout the year.

Status pengurusan pengambilan air

At Fuji Electric, the majority of our production facilities are located in industrial parks, which are supplied with both industrial water and drinkable tap water; some of our facilities use groundwater, too. We provide annual reports on groundwater intake volumes to the relevant authorities, and make efforts to ensure we use local water resources in an appropriate manner. We use groundwater at 15 of our 19 facilities in Japan, and it accounts for 53.7% of our total water intake volume. In the past, intake of groundwater has resulted in land subsidence in Japan; today, however, the government has established standards to ensure that water intake volumes are managed appropriately. Accordingly, social issues caused by water intake are almost non-existent.

Only one of our 14 overseas facilities use groundwater, and it accounts for just 0.05% of our total overseas water intake volume. At Matsumoto, Yamanashi, Tsugaru, and Malaysia Factories, which use particularly large volumes of water in their front-end semiconductor processes, and at Shenzhen Factory we promote water recycling as a way to control and manage water intake volumes.

At other sites, too, we act swiftly in cases where ISO 14001 environmental impact assessments identify significant impacts due to water consumption. In addition to conserving water in our everyday activities, we also work to ensure the early detection and repair of water leaks, invest in water recycling systems, and install above-ground piping for visualization purposes.

Status pengurusan air sisa

Kami mengawal ketat air sisa di kilang yang menggunakan bahan kimia. Kami juga telah menetapkan piawaian kami sendiri untuk pengurusan air sisa, yang lebih ketat daripada yang dimandatkan secara sah. Jika keabnormalan dikesan dalam sistem rawatan air sisa, kami mempunyai kakitangan pembaikan pemastautin di tempat untuk bertindak balas dengan segera. Jika kami mengesan pelarasan pH yang tidak mencukupi atau masalah yang serupa, saluran saliran kami ditutup secara automatik untuk mengelakkan air sisa yang tidak memenuhi piawaian rasmi daripada dibuang ke luar. Air sisa substandard ini disimpan di dalam takungan saliran sehingga pemulihan selesai.

Dengan menguruskan air sisa secara ketat dengan cara ini, kami berusaha untuk meminimumkan kesan aktiviti kami terhadap ekosistem.

Usaha untuk menggunakan air secara berkesan di tapak pengeluaran kami

Matsumoto Factory uses large amounts of water in its front-end semiconductor processes, so it is making efforts to recycle water as a way of reducing its environmental load. Thanks to new recycled water production facilities that commenced operation in December 2023, in fiscal 2024 the Factory increased its use of recycled water by 10.5% compared to fiscal 2022, and also improved its recycling rate by 0.6%. Going forward, we will continue to strengthen our water recycling and our water intake reduction activities.

Topik
Penggunaan sumber air yang cekap di kilang Matsumoto

Kilang Matsumoto kami, tempat kami membuat wafer semikonduktor, menggunakan sejumlah besar air tulen dalam proses fabrikasi wafer dan banyak air untuk menyejukkan peralatan pengeluaran. Oleh itu, adalah penting untuk kita mengurangkan penggunaan air dan menggunakan sumber air kita dengan berkesan.

Pengurusan Air Bersepadu Baharu

Inisiatif kitar semula air tulen:

Air sisa daripada proses pembuatan diasingkan dan bahagian yang agak berkualiti tinggi dikitar semula sebagai air mentah untuk pengeluaran air tulen.
Untuk meningkatkan pemulihan air sisa daripada proses pencucian, kami telah berjaya membuat penapis karbon bioaktif dengan Microbacteriaceae, yang terkenal dengan keupayaan rawatan bahan organik, dan dengan itu meningkatkan kadar pemulihan. Untuk air sisa yang mengandungi fluorin, yang berbahaya kepada alam sekitar, kami telah memperkenalkan sistem pemulihan air sisa khusus yang menggunakan membran osmosis songsang untuk menumpukan air sisa dan mengurangkan isipadunya. Selain itu, air bersih yang telah melalui membran digunakan semula sebagai air mentah untuk membuat air tulen.

Mengurangkan penggunaan bahan kimia di kemudahan rawatan asid hidrofluorik:

Proses penulenan air memerlukan penjanaan semula resin penukar ion secara tetap, yang menghasilkan campuran air sisa berasid dan beralkali. Di Fuji Electric, kami sebelum ini meneutralkan air sisa ini dan, selepas rawatan terminal, membuangnya ke dalam sistem kumbahan awam. Berhasrat untuk mengurangkan penggunaan bahan kimia, kami telah mencipta dan memperkenalkan sistem kitar semula air sisa baharu yang memisahkan larutan beralkali berkepekatan tinggi daripada air buangan, dan menggunakan semula larutan beralkali ini untuk membuat pelarasan yang diperlukan pada tahap pH bagi peralatan rawatan asid hidrofluorik kami. Ini telah membolehkan kami mengurangkan jumlah bahan kimia yang digunakan, serta kos keseluruhan.

Membina sistem kitar semula air sisa baharu

In addition to our existing Integrated Water Management (IWM) wastewater recycling system, in fiscal 2023 we commenced operations of a new wastewater recycling system. This new system is capable of recycling twice the volume of wastewater of the existing system and, thanks to various improvements, the treated water is of a high enough quality that it can be used for air-conditioning. This has enabled us to support the increased production of Si products and SiC products. Going forward, we will continue to consider ways to make efficient use of water resources.