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Product Information Belt Press Dehydrator

Belt Press Dehydrator

Available not only for waste water treatment as sewage but for process usage

Of all the IHI Dehydrators and Filters, the Belt Press Dehydrator can dehydrate various cakes with the lowest fluidity. Combining the low pressure dehydration section and high pressure section properly, we developed the NI-M series that has realized highly effective dehydration in a small installation area. The Belt Press Dehydrator has outstanding features that no other belt press has. We are preparing various sizes according to disposal volume.

Features of Belt Press Dehydrator

  • High Pressure Dehydration
  • Large Diameter Pressure Roller
  • Proper Pressure Roller Arrangement
  • Perforated Roller
  • Effective Dehydration


The valve unit panel, flocculator and oil pump unit are standard equipment for the main body. Also we are preparing a variety of options such as the control panel, pump, strainer, compressor and other items for efficient usage.


The basic principle is to use two pieces of filter cloth to press and dehydrate the slurry.
It is constructed by oil pressure cylinder and specific high pressure belt.
The high pressure belt is a series of strip belts, so pressure is conveyed equally, and is effective for removal of filtrated water.
With regard to the high-pressure dehydration part, the gravity dehydration part, and the low-pressure dehydration part, the effect of filtration and dehydration are excellent, so a firm cake can be obtained.
Therefore, the function of the high-pressure dehydration portion works effectively, whereby a wide application for sludge treatment is possible.

Effective Dehydration with Gradual Pressure Control

Sludge is supplied to the Flocculator first. Inside the Flocculator, it is reacted with high polymer flocculant and coagulated flocks are created. The coagulated flocks are dehydrated by gravity in the Feed box, and then they go through the large diameter rollers and the small diameter rollers (Low pressure dehydration section). Finally, they are compressed in the High pressure dehydration section and the cake is discharged from the outlet.



  • Note) Standard Disposal Volume above is based on the assumption of dehydration (water content rate of cake=80~82% ) of mixed sludge (SS concentration=2%) using the standard nitrogen removal method. Disposal volume differs according to the type of sludge, SS concentration, how to use chemical liquid, or desired water content rate of cake. Please ask IHI about features, applications, or options.