With exclusive marketing in the U.S., the Rotary Drum Thickener is the most economical and modern solution to sludge thickening. It can be used in a variety of thickening applications, such as:
- Condensing sludge prior to dewatering
- Prior to biogas reactors; thus, enabling smaller bioreactors
- Prior to long term storage (such as winter storage for summer agriculture application)
- Prior to applying to drying beds or agricultural lands; thus, reducing space requirements
- Removal of coarse materials (such as fibers in the textile industry)
The principal advantage of the Rotary Drum Thickener is the use of an Archimedean screw instead of the conventional drum filter. The polyester filter cloth is fixed to the Archimedean screw, making a drum with a screw inside. The drum filter is rotated by an adjustable gear motor. This design enables an easy and simple control of the dewatering process by adjusting the rotation speed to achieve the optimal dewatering time and preventing short-circuiting.
The achievable dewatering results are much higher than with conventional systems. The filter cloth is kept clean by making use of washing water at high pressure from outside the drum. The filter cloth has a long life, since it is not under tensile stress. The Rotary Drum Thickener is supplied complete with control panel, washing pump and all the ancillary equipment necessary for efficient operation.
The Rotary Drum Thickener can handle from 10 gpm to a maximum of 300 gpm, depending upon the type of sludge and the dry solid content. Changing the speed of the Archimedean screw allows adjustment of the concentration of the thickened sludge and minimizes the use of Polyelectrolyte. As a general guide, sludge with 0.5 - 3% can be thickened to 5 - 15% Dry Solids. As with other equipment by Aero-Mod, the Rotary Drum Thickener is manufactured with AISI 304 Stainless Steel.
Advantages of SCRUDRAIN Rotary Drum Thickener:
- Thickening from ½% to 6-10+%
- Dryer sludge cakes than traditional equipment
- Simple and rapid maintenance
- 304 SS Construction
- Skid mounted package for ease of installation
- Economical
