Water treatment for thermal power plants is conducted to prevent problems such as carryover to the turbine components, as well as corrosion and scale formation/deposition in the boiler and turbine systems. Since 1959, water treatment methods have been improved to deal with equipment nonconformities. The required water quality for boilers and turbines of thermal power plants is stipulated by the Japanese Industrial Standard (JIS) B 8223. JIS B 8223 is regularly amended, in which Mitsubishi Heavy Industries, Ltd. (MHI) has also participated. The improvement of water treatment methods for aging plants, higher operational efficiency, and better environmental conservation has been high on the agenda in recent years. This paper introduces a package of new products and technologies that we are developing.
