Marinfloc Sludge Dewatering Unit
Sludge Dewatering Unit
Reduces Water Content By 85%
Oily sludge on board a ship is mainly produced
by the refuse/reject from the Fuel Oil (FO)
and Lub. Oil (LO) Purifiers and/or Automatic
Back Flushing Filters. Some of the sludge
does originate from leakage, which comes
from cofferdams around FO settling and service
tanks, pumps, filters, engines and boiler
burners etc.
This is led to the Sludge Oil Collecting
Tank. Some ships do have separate Sludge
Tanks for FO Sludge and LO Sludge. In any
case, the sludge produced does not consist
of 100% oil residues and solids.
Water will be added when draining the FO
settling(s) and service tanks, from sludge
discharge from self cleaning centrifuges,
from various steam and water leaks, when
washing down and from condensation.
As a matter of fact, the Oily Sludge in
the Collecting tank can contain as much
as 80 % of mixed free and bonded/homogenized
water. For an incinerator to burn sludge
oil with such a high water content is impossible
without a supporting flame.
To pump the sludge oil ashore costs a
lot of money. Today often at a higher cost
than for taking the FO bunker onboard. Thus
we like to get out as much water as possible
to either, make it possible to burn the
Sludge Oil at its own calorific value, or/and
to reduce the number of sludge discharges
to shore collectors.
The way to reduce the water in the Oily
Sludge can be done in different ways : Manually,
which will not reduce the water content
enough or in using a centrifuge, which can
give you a good result but at a high investment
and maintenance costs.
The third and a less expensive way to achieve
a good sludge handling result is to invest
in a Marinfloc SDwU installation.
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