The rotary drum thickener is used for the continuous and automatic thickening of municipal or industrial sludge.
Various installations of the RDT, on a sludge silo, on a civil works (inside a building), on a trailer, in front of a belt filter press or on a skid supporting frame.
ADVANTAGES
- Small foot print
- Fully enclosure for safety and odor control
- Drum speed control by VFD
- Adjustable drum inclination up to 10° for process settings
- Slow and homogeneous mixing of the sludge for an efficient extraction of the water, heavy sludge load accepted
OPERATING PRINCIPLE
The rotary drum thickener consists of the following components: stainless steel structural frame, sludge distribution system, filtering drum, spray bar for washing system, peripheral drum drive system, full set of covers, electric control panel (optional).
Floculated sludge from floculation tank is led inside drum thanks to smooth sludge discharge plate. Water flows out through surface of the drum and sludge concentration increased while transported by the spiral screw along and finally out from the end of the drum.
The combination of the peripheral drive, drum roller support, spiral screw and perforated drum prevents the sludge from sliding out of the perforated drum as it passes from one end to the other. The spiral screw mixes the sludge slowly inside the drum to allow efficient extraction of water from the sludge. The drum surface is cleaned by pressure water jets and operates on a timer.
