Titanium Dioxide Opens the Future of Water Purification - Asahi Denka Kogyo's Groundwater Purification Technology - February 1998

Titanium Dioxide Opens the Future of Water Purification - Asahi Denka Kogyo's Groundwater Purification Technology - February 1998

Asahi Denka Kogyo (now ADEKA) has developed a groundwater purification system that utilizes titanium dioxide, marking a new development in environmental pollution control. This technology uses the photocatalytic action of titanium dioxide to decompose chlorinated organic compounds, thereby improving water quality. Compared to conventional groundwater treatment methods, this technology does not require the use of chemicals and achieves highly efficient purification while minimizing the risk of secondary contamination.

This system has been applied to the treatment of groundwater affected by factory effluent and soil contamination, and is particularly capable of removing volatile organic compounds (VOCs) such as trichloroethylene and tetrachloroethylene. Another major advantage of this system is that it generates virtually no residues because it uses a photocatalytic reaction to decompose pollutants into water and carbon dioxide.

Asahi Denka Kogyo has been conducting demonstration tests in various locations in cooperation with local governments and companies that promote industrial waste treatment and groundwater contamination countermeasures. The technology is being applied in urban and industrial areas, and is expected to be applied in the future to ensure the safety of drinking water and to purify water for agricultural use. Water purification technology using titanium dioxide is attracting attention as a key technology for sustainable water resource management.

Related information:.
The groundwater purification technology developed by Asahi Denka Kogyo is highly regarded as a photocatalytic decomposition technology for chlorinated organic compounds. In particular, a groundwater purification plant that performs photocatalytic reactions in the gas phase has been developed, contributing to the improvement of factory effluent and soil contamination. As research literature, "Treatment Technology for Organochlorine Compounds Using Photocatalysis" and "Development of Treatment System for Organochlorine Compounds in Water by Gas-Phase Photocatalysis" are useful references. These technologies are expected to be further developed in the future to address the growing seriousness of groundwater contamination.