The Flottweg C-series accelerates the supplied separation medium particularly effectively, thus saving energy. The solids are thrown onto the inner wall of the bowl by acceleration and discharged via the decanter scroll to the conical bowl end.

In contrast to other decanter centrifuges, the C-series decanter have a double cone and a baffle plate. The double cone reduces the distance between decanter bowl and scroll. This presses the solids against the baffle plate and increases the pressing effect. The separated water flows away without pressure along the screw.

HTS = Highest dry solids content

The centrifuge for dewatering sewage sludge

The Flottweg HTS Decanter® is a specialized machine for drying out sewage sludge, which is the solid material left over from treating wastewater. "Dry solids content" refers to the amount of solid material remaining after most of the water has been removed. This decanter is known for its high performance, using less energy and fewer additives to achieve better results. Compared to traditional methods, the HTS Decanter® increases the amount of dry material, which can lead to an 80% reduction in sludge volume and save about 8% in disposal costs. It's a highly automated system, which means it can adjust to changes in the sludge and continue to operate with minimal manual intervention, making it a cost-effective solution for wastewater facilities.

OSE = optimum sludge thickening

The decanter centrifuge for the thickening of sewage sludge

In the process of treating waste water, fine biological sludge is constantly produced during the decomposition process at a sewage treatment plant. For a stable decomposition process in the biological treatment phase, the sludge produced in the secondary sedimentation pond, also known as excess sludge, is removed and fed into the digestion tower. Flottweg's OSE decanters thicken the sludge before it enters the digestion tower. Sewage treatment plants benefit from an even feeding of the digestion tower and can thus optimally use the volume of the digestion tower. The Flottweg OSE decanter is specially designed for sludge thickening. Thus this thickening centrifuge achieves considerably better separation qualities than other centrifuges.

More than 50 years of experience and know-how in the field of sewage sludge thickening flow into our Flottweg OSE decanters. The thickening decanter is thus convincing in terms of reliability, high economy and minimum maintenance.

Flottweg has developed a unique centrifuge concept specifically for high-degree dewatering of sewage sludge: the Flottweg X Series.

The Flottweg Xelletor System Redefines State of the Art

• Maximum compression and separation efficiency, thanks to a super-deep pond and baffle plate.

• Flottweg Recuvane® for the recovery of the energy used.

• The powerful in-house design of the Flottweg Simp Drive®.

• Shields surroundings well from odors and sewage sludge aerosols, thanks to sealed construction.

• Fully automated regulation of bowl and differential speed; automatic flocculant dosing with real-time monitoring on request.

Flottweg X Series: the Most Economical Solution for Your Sewage Sludge Dewatering

• Xtra dewatering performance: Up to 10%* less sludge volume due to up to 2% higher total dry solids in dewatered sludge.

• Xtra polymer savings: Up to 20%* less flocculant needed.

• Xtra energy savings: Up to 20%* lower energy consumption.

• Xtra clean: The separation degree is greater than 99%.

• Xtra capacity: Up to 15%* more throughflow.

^{* in comparison with our centrifuges in the C Series}