![Paper pulp in conveyor screw beeing fed into Rotary press for solid-liquid separation.](https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Paper-pulp-in-coveyor-screw-Lange-Lyche-Teknisk-2000x968.jpg?width=575&name=Paper-pulp-in-coveyor-screw-Lange-Lyche-Teknisk-2000x968.jpg)
Dewatering Press
The FOURNIER ROTARY PRESS™ offers a highly efficient solid-liquid dewatering separation for a range of industries that handles biomass, sludge, pulp, or other suspension materials.
An efficient and economical dewatering solution.
The Fournier Rotary Press™ is a solid-liquid separation technology that significant advantages over traditional dewatering solutions. With distinct models suitable for high fiber-containing sludges (CVP) and biological sludges (CVH), it offers a highly effective dewatering process that uses less polymers, power and water compared to other technologies.
The installation of the rotary press requires a smaller footprint and boasts a modular and expandable design, providing cost-effective expansion opportunities as capacity demands grow. Additionally, its slow rotational speed results in lower noise and reduced vibrations, enhancing the work environment and simplifying installation-site requirements.
![Fournier Rotary Press - 4 channel type with both Flocculation and conveyor units.](
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/RotaryPress4.png?width=288&name=RotaryPress4.png 288w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/RotaryPress4.png?width=384&name=RotaryPress4.png 384w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/RotaryPress4.png?width=496&name=RotaryPress4.png 496w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/RotaryPress4.png?width=600&name=RotaryPress4.png 600w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/RotaryPress4.png?width=1199&name=RotaryPress4.png 1199w)
PERMANENTLY REDUCED OPEX
Capable of handling 0.5% to 10% inlet consistencies, it can replace pre-thickening and main dewatering equipment.
Recognized for best-in-class operational flexibility and low OPEX, its enclosed design prevents odor emissions and maintains a clean machine environment. High automation possibilities and reliability minimize operator attendance, freeing up time for other worktasks.
Lab and pilot tests ensure sound performance data at an industrial scale.
![Filtrate1](
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Filtrate1.jpg?width=288&name=Filtrate1.jpg 288w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Filtrate1.jpg?width=384&name=Filtrate1.jpg 384w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Filtrate1.jpg?width=496&name=Filtrate1.jpg 496w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Filtrate1.jpg?width=600&name=Filtrate1.jpg 600w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Filtrate1.jpg?width=1199&name=Filtrate1.jpg 1199w)
TECHNICAL INFO
The Fournier Rotary Press™ is a enclosed system completed by sludge and polymer feed systems.
The operation principle of the press is quite straightforward with few moving parts that rotates at a slow speed (around 1 r.p.m);
Flocculated sludge is introduced into a channel under low pressure and set into motion between two parallel, revolving stainless steel chrome-plated filter elements. The process allows free water to filter out while the sludge thickens and dehydrates further as it progresses through the channel. The accumulation of flocculated sludge against a restrictor arm gradually builds pressure. This pressure, in tandem with the frictional force from the slow-moving filter elements and the controlled restriction of the outlet, creates sufficient back pressure to intensify dewatering, culminating in the extrusion of an exceptionally dry cake.
KEY METRICS:
▶️ Slow rotation speed: 0.5 to 2 rpm.
▶️ Cake total solids percentage varies: 15% to >58% based on sludge type.
▶️ Filtrate total suspended solids capture rates: 95% to 99.5%, dependent on sludge type and polymer usage.
▶️ Minimal internal abrasion, even with abrasive sludges.
▶️ Energy consumption ranges: 2 to 7 kW/hr per dry ton of sludge.
▶️ Flow rates per hr/dewatering module: 2 to 12 m3/hr, dependent on sludge type and dewaterability.
▶️ Optimized polymer consumption.
▶️ Recognized for the lowest operational expenses across the life cycle compared to competing technologies.
![Fournier-Rotary-Press-schematic-1024x1325](
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Fournier-Rotary-Press-schematic-1024x1325.png?width=288&name=Fournier-Rotary-Press-schematic-1024x1325.png 288w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Fournier-Rotary-Press-schematic-1024x1325.png?width=384&name=Fournier-Rotary-Press-schematic-1024x1325.png 384w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Fournier-Rotary-Press-schematic-1024x1325.png?width=496&name=Fournier-Rotary-Press-schematic-1024x1325.png 496w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Fournier-Rotary-Press-schematic-1024x1325.png?width=600&name=Fournier-Rotary-Press-schematic-1024x1325.png 600w,
https://143653436.fs1.hubspotusercontent-eu1.net/hub/143653436/hubfs/Fournier-Rotary-Press-schematic-1024x1325.png?width=1199&name=Fournier-Rotary-Press-schematic-1024x1325.png 1199w)
Products
The FOURNIER ROTARY PRESS™ offers a highly efficient solid-liquid dewatering separation for a range of industries that handles biomass, sludge, pulp, or other suspension materials.
Wide selection of quality pumps and flow solutions for all stages of the process-line.