Drum Thickeners
Drum thickeners is a device, which thickens sludge mechanically.
It is used for drying sludge from municipal, industrial and solids
wastes.
Working Principle:
The drum thickener conveys flocculated sludge through a slowly rotating
drum filter. The flocculation is achieved by treating the solid
with polyelectrolyte. The water phase passes through the filter
cloth leaving the sludge in the drum. Sludge concentration is regulated
by adjusting the following:
Feed Rate
Angle and Speed of the Drum
Aldrum Sludge Thickening System
These drum thickeners have a drum cleaning system with a spray bar
for water. Using either potable water, final effluent or treated
filtrate intermittently, the water consumption is kept low.
ALDRUM comes in four sizes. These are available either as separate
components or as complete modules. The ALDRUM Drum Thickener is
usually with an ALDRUM Flocculation Reactor.
Aldrum Flocculation Reactors
These are a range of pressure-less reactors with a specially designed
agitator to ensure proper flocculation of the sludge. The special
design enables the flocculation of the solids in the sludge. The
reactors are available in five sizes ranging from 30 GPM to 530
GPM on the basis of 1% dry solids sludge feed.
Aldry High Performance Drum Drying Modules
ADLRY is based on proven technology developed over extensive research
work over the years. The modules are factory assembled and pre-tested
for quick installation and commissioning. The system uses the direct
drying principle with rotating drum and gas recirculation.
What's special about our DRUM THICKENERS?
Alfa Laval DRUM THICKENERS have:
Wide versatility as it can be adjusted to suit individual drum thickening
needs. By varying the feed rate, polymer type and dosage etc., optimal
thickening is achieved.
Our design addresses critical variables such as: flocculation mixer
speed, drum speed, angle of the drum and spraying interval to provide
an efficient and economical solution.
 We
address new applications through a wide range of filter cloths available
from Alfa Laval.
The ALDRY system incorporates:
Safe processes with no accumulation of dust and volatile components.
Low fuel consumption and a wide choice of alternate fuels
Unmanned service for long service intervals
Special ENHANCEMENT packages are available to justify local conditions
Where's our DRUM THICKENING equipment used?
Chemical industry
Pulp and paper industry
Municipal waste industry
Solids waste handling plants
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