Abstract
The Japan Paper Association (JPA) established the guideline for dioxin measures on December 20th in 1990 to prevent dioxin pollution of effluent discharged from bleached kraft and/or dissolving sulfite pulp mills. All mills cleared the selfimposed standard of less than AOX 1.5 kg per one ton of bleached pulp before the end of 1993. The standard was completely attained by the deadline. The JPA measured dioxins concentration of effluent from the bleached pulp and paper mills to examine effects of AOX reduction in March 1996 and it was confirmed that dioxins in effluent of these mills was decreased to 86% in average concentration and to 96% in weight as compared with those in the year of 1991. Also it was observed that no relationship existed between dioxins and AOX under such extremely low concentration of dioxins.
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