The commercial scale plant has already been working in Hokkaido, Japan, operated to process
the wastes from nearby medical facilities. It is capable of handling up to 1 ton of waste per batch,
and generally applying middle pressure saturated steam at around 2MPa to a stirred reactor for
about one hour. Figure 3 below shows the plant process diagram, which implements a closed
loop system principle.Water from condenser entering the water treatment plant is being fed back to the boiler for steam
supply. At the beginning of the batch, waste is being fed into the reactor to undergo a
hydrothermal reaction with saturated steam supplied from boiler, while being stirred by the rotor
unit to obtain a homogeneous product. After reaching intended temperature, the boiler is set to
maintain the temperature for a certain holding period. The hydrothermal treatment is finished by
bleeding the pressurized steam to the condenser until the reactor reaches atmospheric pressure.
The product can then be pushed outside by rotating the stirrer acting as a screw conveyor