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ALDRUM Sludge Thickening System - Drum Thickener0 pages
ALDRUM Drum Thickener Midi with an Outlet Adapter (optional)
ALDRUM Sludge Thickening System
Drum Thickener
The ALDRUM Drum Thickener is a range of mechanical
sludge thickeners. The ALDRUM Drum Thickener works on
the principle of conveying polyelectrolyte treated (flocculated)
sludge through a slowly rotating drum filter. The sludge
remains in the drum, while the water phase passes through
the filter cloth. The Sludge concentration can thus be regulated
by adjusting the feed rate, angle and speed of the drum.
The ALDRUM Drum Thickeners are equipped with a drum
cleaning system consisting of a spray bar for water. The
water consumption is low due to intermittent cleaning of the
drum using either potable water, final effluent or treated filtrate.
The ALDRUM Drum Thickener comes in four sizes. They are
all available as separate components or as complete sludge
thickening modules. The ALDRUM Drum Thickener is
designed to handle sludge extremely gently, which means it
gives exceptionally high recovery for nearly all sludge types.
An ALDRUM Drum Thickener is usually combined with an
ALDRUM Flocculation Reactor. In this combination Alfa Laval
is offering five different capacities, Mini, Midi, Maxi, Mega and
Mega Duo, i.e. 7-120 m3/h / 30-530 GPM on the basis of 1%
DS WAS.
Optimisation
The ALDRUM Drum Thickeners can be adjusted to suit individual
sludge thickening needs. Optimal thickening is found
by varying the feed rate, the polymer type and dosage, flocculation
mixer speed, drum speed, angle of the drum and the
spraying interval. There is also a wide range of different filter
cloths available for new applications.
