Alfa Laval offers a variety of rotary drum filters for efficient sludge thickening.
The sludge thickener operates by passing polymer-coagulated sludge through a slowly rotating filter drum. Water passes through the filter cloth, while the sludge is retained to increase the concentration of solids.
The system utilizes a periodic backwashing mechanism to reduce water consumption and can use clean water, final wastewater, or treated water for cleaning.
Thickening performance can be optimized by adjusting:
- Sludge feed rate
- Polymer type and dosage
- Drum rotation speed
- Rinsing cycle.
Additionally, adding a coagulation reactor or mixing valve before the device saves chemicals and improves coagulation efficiency. The device also has various filter cloths suitable for different applications.
ALDRUM
The ALDRUM sludge thickening system allows for a reduction of up to 90% in sludge volume. It is ideal for pre-thickening before processes such as digestion or dewatering, and for reducing sludge volume before storage or transport.
ALDRUM G3
ALDRUM G3 sets new standards for sludge thickening with an advanced design that significantly improves process efficiency at minimal operating costs.
