| Dewatered sludge from each
sewage sludge treatment plants are transported
by trucks and stored in the sludge pit. On
the other hand, pumped raw sludge is sent
through a pipe to be stored in a tank. The
tank is then treated with a gravitational
sludge thickener or centrifugal one till the
water content reaches a certain amount. After
that it is sent to the sludge pit. |
| Sludge is supplied to each
sludge feeder by automated crane, and then
dried until water content reaches appropriate
rate. After the sludge molding process, small
portion of coke and basicity adjusting agents
are thrown into the melting furnace. |
| These sludge cakes are dried
and raise temperature by exhaust gas. Flammable
materials are decomposed and burned. Meanwhile
inflammable materials are drained from slag
off hole and stored at the yard as air cooled
slag or water quenched slag. |
| Steam collected from the
boilers is used for power generators as well
as heat sources for the dryer. |
| The plant drainage, which
is caused in the process of treatment at sludge
treatment plant or melting furnace facility,
is purified at water purification plant and
then released back to the ocean. |
| Supervision and control
is automated by the central computer operation. |
