Water Resource Preservation | Environment | Sustainability | Asahi Kasei

Water Resource Preservation


Asahi Kasei Group's business is intrinsically related to water resources. Ensuring their future viability is one of our societal missions and a prerequisite for the continuity of our business. We will contribute to the conservation of water resources around the world through our domestic and overseas water purification membrane module business, water recycling service business, seawater desalination business, the development of sludge reduction products for wastewater treatment, and the expansion of our surface oil detector series. We also have a policy of ascertaining the quantity of our water intake while striving to maintain and improve the efficiency of our water usage.

Reducing water use

The Asahi Kasei Group endeavors to reduce the amount of water used in our plants and to make efficient use of water by recycling it.
The targets of the Group's water resource conservation activities are shown in Answer W8.1a in the CDP Water Security 2021 shown above.

  • Amount of Global Water Intake, FY 2016: 295 million m3, FY 2017: 282 million m3, FY 2018: 307 million m3, FY 2019: 268 million m3, FY 2020: 255 million m3
    Amount of Global Water Intake
  • Industrial water + Ground water + Municipal water, FY 2016: 272 million m3, FY 2017: 266 million m3, FY 2018: 294 million m3, FY 2019: 253 million m3, FY 2020: 242 million m3
    Amount of Water Intake by Source (domestic)

Prevention of water pollution

The Asahi Kasei Group thoroughly manages emissions and prevents leakage so as not to contaminate bodies of water or groundwater.
In 2012, we issued our Guidelines on Wastewater Management. In addition to affirming our commitment to wastewater management based on this, we are also working on enhancing the capacity of wastewater treatment facilities and other equipment. Items regulated by the Water Pollution Prevention Act are managed within those standards.
In fiscal 2020, there were neither instances of leakage as related to the Water Pollution Prevention Act nor violations or fines related to environmental laws and regulations.

  • Nobeoka + Mizushima + Moriyama + Fuji + Ohito + Kawasaki + Suzuka + Other sites, FY 2016: 212 million m3, FY 2017: 212 million m3, FY 2018: 221 million m3, FY 2019: 216 million m3, FY 2020: 204 million m3
    Amount of Wastewater (domestic)
  • Nobeoka + Mizushima + Moriyama + Fuji + Ohito + Kawasaki + Suzuka + Other sites, FY 2016: 910t, FY 2017: 820t, FY 2018: 880t, FY 2019: 890t, FY 2020: 850t
    Chemical Oxygen Demand (COD) Load

Asahi Kasei products and technologies for water conservation

Microza™ hollow fiber membrane filtration module

We are a top-tier supplier of water treatment membranes and filtration systems. Microza™ is a hollow fiber membrane we have developed for water treatment. It is used in more than 1,600 water purification plants and wastewater plants worldwide, including in the United States, China, Korea, Singapore, Thailand, Indonesia, and Middle Eastern countries. In fiscal 2017, Microza™ was adopted at a seawater desalination plant in Kuwait, helping to alleviate chronic water shortages.
Going forward, we will continue to work on global water and environmental issues with the aim of resolving various problems related to water resources.

Saran™ Polyvinylidene Chloride Fiber

One important issue in wastewater treatment is reducing the amount of sludge generated, which is directly tied to decreasing its environmental impact. The Asahi Kasei Group conducts research and development into new commercial products that feature a unique technology using microorganism immobilized carrier that flows, making use of the characteristics of Saran™ fiber, which microorganisms inhabit easily.
Existing facilities can adopt these products by making simple improvements like installing screens, without requiring major modifications. This improves processing capabilities and reduces the amount of sludge generated.

Apolarm™ series environmental monitoring products

Asahi Kasei Technosystem's Apolarm™ Series detects a wide range of oil leaks, including floating oil (oil film and oil layers), sediment oil, and water-soluble oil. We will continue to expand our product line and protect the aquatic environment with oil detection devices for specific applications.

Apolarm C Oil layers of 3 mm or more trigger a capacitance shift and sound an alarm.
Apolarm M A non-contact laser detector that can sense minuscule amounts of oil film on the water surface.
Apolarm B Detects oil and organic solvents that have a greater specific gravity than water, causing them to sink.
Apolarm F Detects leakage of fluorescent water-soluble oils.