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WHAT A FUTURE SOLID WASTE DISPOSAL SHOULD BE? CURRENT STATUS, PROBREM, AND FUTURE DIRECTION IN JAPAN

There are three types of landfill in Japan according to the risk control level, strictly controlled, controlled, and least controlled landfill. They correspond to the categories of industrial wastes which are designated by law, i.e. hazardous waste should be disposed of in the first type, inert waste is only permuted to reclaim in the third type, and other industrial waste and municipal solid waste are allowed to fill in the second type. In this paper a future final disposal of solid wastes as it ought to be in our country will be proposed after the outline of the status quo of waste management and final disposal and their problems are discussed.

The existing strictly controlled landfill should be excluded from the concept of current waste disposal site according to the basic principle " not to leave adverse legacy in future" to redefine itself as " storage facility" based on extended producer responsibility EPR principle. In the least controlled landfill we should add a new restriction condition, " not to deteriorate to a ecosystem" besides the essential view " not to affect human health and life environment". And to prevent mixing with illegal wastes an inspection manual to check inappropriate waste before dumping should be prepared and a way to get leachate should be secured to monitor. Especially it is necessary to make the bed foundation impermeable or to construct the leachate collection pipes on it. As final disposal of inert wastes is based on designation of a waste article, most of them have no standard to evaluate the quality. Therefore,, it is important to improve the effect of visual inspection, and to introduce simple leaching test applicable to site for wastes with difficult visual check.

Copyright:	© IWWG International Waste Working Group
Quelle:	Specialized Session E (Oktober 2007)
Seiten:	9
Autor:	Yuzo Inoue Masato Yamada Kazuto Endo Hiroshi Asakura
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