Present Conditions and Problems regarding Advanced Leachate Treatment Technologies

Abstract

Leachate treatment in Japan has made significant advancements, especially in the use of trickling filter, rotating disc and contact aeration as well as in calcium removal, desalting processes, dioxin separation and decomposition and also 1,4 dioxane processing. Due to the fact that the quality and composition of pollutants being removed from each landfill for transport to their final disposal site will vary to a great degree, we show here which leachate treatment technology is applicable for each pollutant. In addition, we describe the historical changes that have taken place in water treatment technology with regard to final disposal sites. We also discuss the questions that need to be asked concerning the future of leachate treatment technologies.