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 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.
In addition, as a unique indicator of our water resource preservation activities, we have set a target for water resource contribution* of 9.3 or higher. We achieved this target in fiscal 2017, and the possibility of setting a new target is under discussion.

  • *Water resource contribution = Total amount of water treated via our water filtration membrane business, water recycling business, and seawater desalination business / the Group's domestic water intake
  • Amount of Global Water Intake

    Amount of Global Water Intake

  • Amount of Water Intake by Source (domestic)

    Amount of Water Intake by Source (domestic)

  • Water Resource Contribution

    Water Resource Contribution

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 2018, there were no instances of leakage as related to the Water Pollution Prevention Act.

  • Amount of Wastewater (domestic)

    Amount of Wastewater (domestic)

  • Chemical Oxygen Demand (COD) Load

    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.