To prevent the clogging of piping by preventing the adhesion of a soft foreign matter consisting of an organic matter to the inside of the piping and to also prevent an increase in the amount of the discharge liquid discharged from a waste treatment apparatus.
The waste treatment method has a hydrothermal reaction process of liquefying organic waste X held to a high-pressure/high-temperature state to obtain a treated liquid Y and a pressure reducing process for reducing the pressure of the treated liquid Y and also has a cooling process of cooling a part of or the whole of the treated liquid Y after the pressure reducing process to obtain cooling water Y' and feeding back this cooling water Y' to the treated liquid Y to cool the treated liquid Y.
TAMAMUSHI FUMIHIKO
TAKESHITA KAZUHIKO
Takashi Watanabe