DRUM THICKENER ALDRUM G3

The ALDRUM G3 is a new member of the well-proven range of Alfa Laval mechanical sludge thickeners, with significantly enhanced capabilities. The ALDRUM G3 is optimized to set
new standards for sludge thickening, resulting in greatly improved process performance at minimum operating cost. The robust, straightforward design makes the ALDRUM G3 drum thickener a reliable, user-friendly product that only requires a minimum of maintenance. It is available with a range of auxiliary equipment to meet individual customer requirements.
 

The ALDRUM G3 reduces the sludge volume by as much as 90%, thus cutting costs for sludge handling, transportation and storage considerably.
 

Working principle:
The ALDRUM G3 works on the principle of conveying polyelectrolyte treated sludge (a.k.a. flocculated sludge) through a slowly rotating drum filter. The sludge remains in the drum, while the water phase passes through the filter cloth. Water consumption is low due to intermittent cleaning of the drum
using either potable water, final effluent or treated filtrate.

The ALDRUM G3 can be adjusted to suit individual sludge thickening needs. Optimal thickening is obtained by varying the feed rate, the polymer type and dosage, drum speed and the spraying interval. The best possible flocculation is achieved by installing the flocculation reactor and/or mixing
valve upstream of the actual drum thickener. 

Achieve more with ALDRUM G3:
The new feed zone provides extraordinarily gentle treatment of the sludge being processed. This results in reduced polymer consumption at the same time as making sure of exceptionally high recovery rates for most types of sludge. Some particularly difficult sludge types, which previously
required liquid polymer to flocculate and thicken them, can now be treated using cheaper powder polymer, thus reducing operating costs. The ALDRUM G3 makes it possible to achieve a 30%
increase in solids load capacity on the same footprint as the previous design. This is the result of a new conveyor design that also increases the separation efficiency in the drum. This, combined with the more gentle treatment of sludge, ensures superior performance as well as low polymer consumption.
 

Less maintenance work with ALDRUM G3:
The entire ALDRUM range of drum thickeners is renowned for its robust, straightforward design, and extremely durable filter cloth. The new ALDRUM G3 design is also equipped with an
integrated Cleaning in Place system. The benefits include easy operation, limited maintenance and
maximum uptime.
 

Meeting your exact requirements:
A selection of auxiliary equipment is available for the ALDRUM G3, as well as for all other models in the ALDRUM range.
• Mixing valve (Ensures thorough mixing of polymer and sludge to allow flocculation with minimum   amount of polymer. Can be installed directly onto the inlet of the drum thickener, or before the   flocculation reactor)

• Flocculation reactor (Simple open reactor that kick-starts the creation of large and strong flocs. Can   be installed directly onto the inlet of the drum thickener)
• Sludge hopper (Leads the thickened sludge to the sludge pump in a controlled and efficient manner)
• Basic control panel (Straightforward, user-friendly control of the drum thickener,
  including level monitoring in the flocculation reactor (if fitted))
• Advanced control panel (All-in-one control solution. Control of the plant’s feed pump, sludge pump   and polymer pump, as well as the drum thickener, and level monitoring in the flocculation reactor   and the sludge hopper).

Performance made simple:
The ALDRUM G3 range features a unique design with multiple benefits:
• Excellent process performance
• Low polymer consumption, ensuring low operating costs
• Greater capacity from the same footprint
• Simple, easy operation and maintenance
• Outdoor installation, if required
• Enclosed design for a clean, odourless working   environment
• Easier cleaning and maintenance, as a result of self-   cleaning design
• Greater safety due to cover switch and slam-proof cover
• Selection of control panels and auxiliary equipment to   meet virtually any specific processing requirement.