State-of-the-Art Waste Treatment and Recycling Plant Delivered to Clean Association of Tokyo 23

May. 27, 2008

State-of-the-Art Waste Treatment and Recycling Plant Delivered to Clean Association of Tokyo 23

Tokyo, May 27, 2008 — Kawasaki Plant Systems, Ltd. announced today that it has delivered a state-of-the-art waste treatment plant to the Clean Association of Tokyo 23.

The plant consists of Kawasaki’s proprietary fluidized bed-type gasification-melting system and plasma-type ash melting system. These plant components make optimum use of natural resources as well as recycled energy and have been designed to leave a minimum footprint on the environment while offering a maximum benefit to the community. It meets strict environmental standards in Japan for dioxins, exhaust gas, effluent emissions, fly ash leachate, and slag.

Electricity generated by a steam turbine power generator that utilizes waste heat as well as photovoltaic panels is used to run plant facilities. The plant is the largest gasification-melting system currently operating in Japan for use in municipal waste treatment and the first to be used in a large city. This plant is the 160th waste treatment system Kawasaki has delivered. It is a model plant that essentially combines the latest feasible technologies that Kawasaki has developed over the years.

Technological features of this plant include:
(1) The Kawasaki fluidized bed-type gasification-melting system
  This system burns and melts down refuse at high temperatures to significantly reduce the amount of toxic gas generated, while mitigating the burden to the environment. Recycling iron, aluminum as well as detoxified molten slag it minimizes the amount of solid waste to be disposed of and extends the life of existing landfill sites.

(2) The Kawasaki plasma-type ash melting system
  This air-operated system safely melts incinerated ash and fly ash by using weakly ionized (approximately 1%) high temperature plasma (between 20,000°C and 30,000°C at its center and 3,000°C at its circumference). The system reduces ash to approximately one third of its initial volume by turning it into stable molten slag.