In recent years, as the idea of Best Available Techniques (BAT) is widely accepted in various
industries, regulations on wastewater (especially desulfurized wastewater) from thermal power
plants are becoming stringent mainly in Europe and the U.S., increasing the demand for dry flue
gas treatment technology and zero wastewater technology. Mitsubishi Hitachi Power Systems, Ltd.
(MHPS) has commercialized several zero wastewater technologies such as the Wastewater
Evaporation System (WES) and the Waste Water Concentration and Solidification System (WCS).
This report summarizes the technological development of our new zero wastewater technology for
thermal power plants (i.e., the Wastewater Spray Dryer or WSD), which is designed based on the
temperature reducing tower of our proven refuse incinerator.
