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Waste Management & Research, Vol. 17, No. 6, 505-510 (1999)
DOI: 10.1177/0734242X9901700616

Problems in leachate treatment systems caused by incineration

Toshihiko Matsuto

Environmental & Resources Engineering, Hokkaido University, Sapporo 060-8628, Japan

A national waste management policy was set up m Japan with a target of achieving 100% incineration of combustible waste. This resulted in the establishment of more than 2000 municipal solid waste (MSW) incinerators, a substantial increase in the amount of incineration residue in landfills and some serious problems in the leachate treatment system. The concentrations of chlorine and calcium are remarkably high in leachates from landfills used for the disposal of incombustible materials and incineration ash. Calcium precipitation takes place which damages the leachate treatment system. Chlorine causes corrosion and its adverse effect on crops is also a matter for concern. Observed damage, available technologies for removal and their advantages and disadvantages are reviewed in this paper. Current research related to the problems associated with dioxins is also summarized.

Key Words: Calcium • chlorine • dioxin • incineration • leachate treatment • residue


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