Residual ash, which is the combustion residue of incinerators, contains many impurities.
Among them, it has been revealed that heavy metals (hexavalent chromium) and dioxins that are harmful to health are included.

The collected residual ash is treated in an appropriate manner so as not to affect the environment, and harmful substances and other substances are sorted out.

In addition, impurities are newly sorted and processed for material recycling.

We will continue to conduct research on disposal methods in the future, and are working positively to achieve more appropriate disposal.