Masaru Tanaka

Director, Department of Waste Management Engineering The Institute of Public Health
(6-1 Shiroganedai 4 chome, Minato-ku, Tokyo 108 Japan)

Abstract

Hazardous waste, which is specially controlled waste defined in the 1991 Waste Disposal Law, has to be disposed of according to its characteristics. Wastes are classified into 3 categories according to their potential risk, and 3 types of landfill structures are considered to be appropriate technologies for those. Isolated landfill structure is required for hazardous waste. Stable type and control type are two other types of landfill structures. The environmental impact assessment plays an important role to make sure environmentally safer disposal of hazardous waste.

Key words: hazardous waste, environmental risk, specially controlled waste, proper management, environmental impact assessment