Pieralisi centrifugal Decanter is able to separate particles with different densities especially suspended solids in 2-phase (liquid-solid) and 3-phase (liquid-liquid-solid) mixtures. A centrifuge is a device, which employs a high rotational speed to separate components of different densities. This becomes relevant in the majority of industrial jobs where solids and liquids are merged into a single mixture and the separation of these different phases is necessary. A centrifugal decanter separates solid materials from liquids in slurry and therefore plays an important role in wastewater treatment, chemical, oil and food processing industries. The operating principle of a decanter centrifuge is based on separation via buoyancy. Naturally, a component with a higher density would fall to the bottom of a mixture, while the less dense component would be suspended above it. A decanter centrifuge increases the rate of settling through the use of continuous rotation, producing a force equivalent to between 1000 and 4000 G’s. This reduces the settling time of the components by a large magnitude, whereby mixtures previously having to take hours to settle can be settled in a matter of seconds using a decanter centrifuge. This form of separation enables more rapid and controllable results.
Decanter vs Belt Filters:
- Ability to work with mixtures including oil
- Reducing water consumption since the machine does not need to continues back wash (comparing with other separation methods)
- No need to chemical washing
- Constant output concentration regardless of major changing of input concentration (thanks to the torque balancing Sys.)
- Wide range of capacity
- Less human force is needed for supervision during operation
- Concentration of outlet cake up to 25%
- Closed system, no odor problem, No need to odor removal units.
- Less required footprint
- Continuous working 24 hour and no need for continues back wash
- Input dry solid less than 1%