Katsuya Nagata

Professor of Waseda University
(3-4-1, Okubo, Shinjuku, Tokyo 169 Japan)

Abstract

In Decenber 1990, a guideline for PCDD/PCDF was issued for the incineration of municipal solid waste in Japan, practical applications of the countermeasures were extended gradually. Emission control technologies for PCDD/PCDF are classified into four categolies; (1) combustion control, (2) rapid cooling of the burnt gases, (3) removal/destruction in the flue gases, and (4) destruction/dechlorination in the flyashes. In this paper, the relation between the formation/emission mechanisms and the control technologies for PCDD/PCDF is discussed. The practical control methods are introduced extensively, and their adoption order is proposed along with the effectiveness. In addition, the trend of emission regulations/guidelines in foreign countries is reviewed.

Key words: dioxins, manicipal waste incineration, emission control, emission regulation, flue gas purification