Futtsu City and 4 other cities in Chiba Prefecture - Wide-area waste treatment with jointly installed melting furnaces (around 2000)

Futtsu City and 4 other cities in Chiba Prefecture - Wide-area waste treatment with jointly installed melting furnaces (around 2000)
Around the year 2000, Japan's general waste management system was facing the limits of independent municipal waste treatment, and the dioxin problem became a social issue in the late 1990s, prompting the closure of small-scale incinerators and replacement with high-performance furnaces. However, the construction and maintenance costs of facilities with advanced exhaust gas treatment equipment are extremely high, and this has become a major burden for local governments. The shortage of remaining capacity in final disposal facilities has also become more serious, and the conventional model of incinerating and burying waste has become less sustainable.

Against this backdrop, the four cities of Futtsu, Kimitsu, Kisarazu, and Sodegaura jointly promoted a melting furnace development plan, which was a progressive initiative at the time. The plan called for the installation of two melting furnaces, each with a capacity of 100 tons per day, in an industrial zone to consolidate the treatment of general waste over a wide area, thereby achieving economies of scale and facility sharing that transcended municipal boundaries.

The melting furnaces melt ash at high temperatures to form slag, a technology that stabilizes hazardous substances. The slag produced can be reused as roadbed material or concrete aggregate, and the amount of landfill waste can be greatly reduced. It was positioned as a recycling-oriented technology that converts waste into resources, rather than a mere treatment facility.

The economic benefits were also significant, and Futtsu City estimated that the treatment cost could be significantly reduced. The ability to comply with environmental regulations while avoiding expensive incinerator replacement was a realistic option for the municipality at the time. This plan can be evaluated as an example of a wide-area waste treatment model that reorganizes technology and administrative operations in an integrated manner.