Sewage Sludge Inline Mixer

Efficient mixing of polymer solution into sewage sludge



INDAG Sewage Sludge Inline Mixers type DLM/KA are used for effective mixing of polymer solution into sewage sludge. The aim is a more efficient sludge dewatering than for example with comb filter presses or belt presses. This is achieved by creating a large stable floc in the sewage sludge. The use of a dynamic inline mixer is always suitable for this purpose if the dewatering machine does not operate dynamically but rather statically. The mixing volume in the long axial mixer housing is sufficiently large to ensure a long dwell time and therefore mixing time.


Advantages of DLM/KA

  • No pressure loss
  • No blockage
  • Entwining (clog) free
  • Homogeneous mixing result
  • Mixing energy can be changed variable and adapted to product or capacity changes
  • Higher DS-values of dewatered sewage sludge
  • Lower polymer consumption

Technology of DLM/KA

INDAG mixer type DLM/KA has shark fin form mixing elements on rotor and no mixing elements in stator (mixer casing). This geometry allows effective introduction of mixing energy and prevents blockages. Rotor of mixer is supported by drive shaft of motor. INDAG DLM/KA is equipped with a double acting mechanical seal. Mixer is available in two pressure ratings. Execution 6 bar for pressure loss belt filter press and 16 bar for filter press.

horizontal or vertical position of mixer is possible

Pressure levels
6 bar, 16 bar

1.4301 (AISI 304), 1.4404 (AISI 316L)

Single acting mechanical seal, double acting mechanical seal

Flange DIN 2633, ANSI ‚ #300

Rotational speed
1450 rpm

20 m3/h to 250 m3/h

Mixer sizes and capacities of DLM/KA

Subject to technical modifications.
Type Unit DLM/K-0 DLM/KA-1 DLM/KA-2 DLM/KA-3 DLM/KA-4
max. capacity m3/h   20 60 120 250
sludge connection mm   65 80 150 200
polymer connection mm   25 25 40 50
power (16 bar) kW   4 4 5,5 7,5
power (6 bar) kW   1,1 1,5 2,2 4,0
rotational speed (50 Hz) 1/min   300 - 1,500 300 - 1,500 300 - 1,500 200 - 1,000

Dimension drawing of DLM/KA (6 bar)

Type Unit L H1 A H2
DLM/KA-0 mm        
DLM/KA-1 mm 802 90 230 136
DLM/KA-2 mm 991 115 315 157
DLM/KA-3 mm 1184 132 385 198
DLM/KA-4 mm 1575 203 570 286

Do you have any questions?
Our experts will be happy to help you.
Here you can find our worldwide partners.

Scroll to top
Request information »