(best examples and good practices) on household organic waste ...

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Picture 59.: Refinery Unit at Ano-Liosia in Greece
(Morocomp.,2010)
In two of these tables, the separation of the middle sized stream takes place.
The separation is achieved through air <strong>and</strong> through ballistic separation. Each
one of the two densimetric tables produces 3 different streams. The lightest <strong>and</strong>
heaviest streams are directed through conveyor belts to the residual waste
stream that is disposed. The third stream is directed to two flat, vibrating
screens for further refinement.
As mentioned earlier, the third densimetric table receives the coarse material
from the rotating drum screens for further refinement. This third densimetric
table also produces three new streams: the lighter <strong>and</strong> heavier streams go to the
waste residuals in order to be disposed off; the remaining stream is directed
through an elevated conveyor back to the composting tunnels in order to be
composted again. Finally, the screening unit has a vibrating screen that
produces two streams; the coarse stream is directed to the waste residuals while
the finer one goes for curing after it passes the stage of magnetic separation.
85% by weight of this stream is directed to an open-air curing place <strong>and</strong> the
other 15% to a curing warehouse. (Morocomp.,2010)
Curing Unit
The curing unit consists of the open-air curing system <strong>and</strong> the warehouse
where curing takes place:
a. In the open-air curing place, the screened compost is placed into windrows
with the use of loaders. The maximum height of the windrows is 3.5 m. The
residence time of the compost in the windrows is 1 month. Curing is essential in