Screw Press
Product

Screw Press

Energy-efficient sludge dewatering

  • Extremely low energy consumption: 0.03 – 0.1 kWh/m³ of sludge
  • Fully automatic 24/7 operation without permanent supervision
  • Minimal maintenance thanks to the slow-rotating screw
  • Low noise and vibration emissions (< 65 dB)
  • Dry solids content of 20 – 35% depending on sludge type
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Image gallery

Skid-mounted package with pump and dosing equipment
Skid-mounted package with pump and dosing equipment
Mobile rental unit – plug & play
Mobile rental unit – plug & play
Multidisc press body in detail
Multidisc press body in detail

Technical data

Throughput2 – 135 m³/h (hydraulic, model-dependent)
DS discharge20 – 35%
Energy consumption0.03 – 0.1 kWh/m³
Drive power0.2 – 5.15 kW
Screw speed0.5 – 3 rpm
MaterialStainless steel 1.4571
Noise level< 65 dB(A)
ControlPLC with touch panel
InstallationSkid-mounted / container

Indicative values. Final data is confirmed project-specifically.

How it works

1

Feed & conditioning

The sludge is conditioned with polymer and fed to the press by a feed pump.

2

Pre-thickening

In the inlet zone the sludge is dewatered by gravity.

3

Pressing zone

The screw conveys the sludge against an adjustable back pressure, forcing water through the screen.

4

Cake discharge

The dewatered sludge cake is discharged automatically.

Typical applications

Municipal waste activated sludgeIndustrial sludge (food, chemical)Oil- and grease-laden sludgeFlotation sludgeBiological sludge

Sizes & configurations

RF-SP series — dimensions and drive data

ModelDischarge height (mm)Length (mm)Width (mm)Height (mm)Net weight (kg)Operating weight (kg)Drive power (kW)Wash water (L/h)
RF-SP-13125018607009152053000.224
RF-SP-13225019058309152754250.348
RF-SP-201350255592014653204700.7432
RF-SP-202350261596014654707301.1164
RF-SP-3014953325870176091013201.540
RF-SP-302495345511351760135021302.2580
RF-SP-303495367015601760182028803120
RF-SP-35158534759051820161022101.172
RF-SP-352585357012851820230034002.75144
RF-SP-353585364517251820335048503.85216
RF-SP-354585413021801820450061004.95288
RF-SP-401759390510702210250034001.8580
RF-SP-402759424015702210348052002.95160
RF-SP-403759446520602210455070504.05240
RF-SP-404759467026302210655096605.15320

RF-SP series — throughput by sludge concentration

Model0.2 % DS — raw / WAS / chemical1.0 % DS — raw / WAS / chemical2.0 % DS — flotation sludge3.0 % DS — mixed / digested5.0 % DS — flotation sludge
RF-SP-1314 (2.0)6 (0.6)10 (0.5)26 (0.9)20 (0.4)
RF-SP-1328 (4.0)12 (1.2)20 (1.0)52 (1.7)40 (0.8)
RF-SP-2018 (4.0)12 (1.2)20 (1.0)52 (1.7)40 (0.8)
RF-SP-20216 (8.0)24 (2.4)40 (2.0)104 (3.5)80 (1.6)
RF-SP-30120 (10.0)30 (3.0)50 (2.5)130 (4.3)100 (2.0)
RF-SP-30240 (20.0)60 (6.0)100 (5.0)260 (8.7)200 (4.0)
RF-SP-30360 (30.0)90 (9.0)150 (7.5)390 (13.0)300 (6.0)
RF-SP-35140 (20.0)60 (6.0)100 (5.0)260 (8.7)200 (4.0)
RF-SP-35280 (40.0)120 (12.0)200 (10.0)520 (17.3)400 (8.0)
RF-SP-353120 (60.0)180 (18.0)300 (15.0)780 (26.0)600 (12.0)
RF-SP-354160 (80.0)240 (24.0)400 (20.0)1040 (34.7)800 (16.0)
RF-SP-40170 (35.0)100 (10.0)170 (8.5)442 (14.7)340 (6.8)
RF-SP-402135 (67.5)200 (20.0)340 (17.0)884 (29.5)680 (13.6)
RF-SP-403200 (100.0)300 (30.0)510 (25.5)1326 (44.2)1020 (20.4)
RF-SP-404266 (133.0)400 (40.0)680 (34.0)1768 (58.9)1360 (27.2)

Values in kg DS/h, hydraulic throughput in m³/h in brackets. Wash water consumption is intermittent. Achievable cake dryness depends on sludge type and polymer conditioning.

Indicative values. Final data is confirmed project-specifically.

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