Waste Not, Want Not

Abstract

Taiheiyo Cement Corporation has been recycling household waste incineration ash as raw material for more than 10 years. This model was implemented as part of the "Zero Emission framework in Saitama Prefecture" in Japan 13 years ago when "district management of wastes" became the basic philosophy, replacing the practice of sending waste to landfill outside the region. To embody this model. Taiheiyo Cement Corporation had to solve two issues: optimisation of the preprocessing facilities for bottom ash, and development of a desalination process for the flyash. This article describes these developments and the operationa experience gained.