What is KDS Separator?

Hybrid Model - combines two functions

- Solid-Liquid Separation / Sludge Thickening
A solid-liquid separator is used for various purposes, such as industrial wastewater/livestock wastewater treatment, residue removal from industrial wastewater and sludge thickening. One of the problems that conventional machines have is that their filter screens get clogged easily. Cost and labour are required to remove the clogging. We developed the cutting-edge mechanism with a unique self-cleaning function. The filter does not clog without backwash water. KDS separator enables reduction in installation cost, life-cycle cost. Besides, the footprint is smaller.

- Sludge Dewatering
KDS separator works as an efficent sludge dewatering device, as well. The original pressurization mechanism reduces water content and the amount of discharge. Besides, the discharged cake has been composted or utilized as cement raw material. This contributes to 3R(Reduce, Reuse, Recycle).

CE Marking

SS-312, SS-412, SS-512, SS-612, SS-311D, SS-411D, SS-511D, SS-611D

Under Preparation
SS-2.56, SS-812, SS-912, SS-1212, SS-811D, SS-811DK, SS-1211DK
KDS Separator

Application and Installation Examples


Livestock Wastewater

Application, Installation Examples
  • Impurity removal of manure
  • Impurity removal of parlour wastewater



Industrial Wastewater

Application, Installation Examples
  • Impurity removal from anaerobic fermentation tanks
  • Impurity thickening before anaerobic fermentation
  • Impurity removal of food processing wastewater
  • Impurity removal of grease trap
  • Solid-liquid separation of vegetable scraps
  • Impurity removal at seafood processing plants
  • Impurity removal at meat processing plants



Municipal Wastewater, Night Soil Treatment Facilities and others

Application, Installation Examples
  • Sewage, night soil treatment Facilities
  • Impurity removal of crushed night soil
  • Thickening and impurity removal of septic tank sludge
  • Thickening of batch type activated sludge
  • Thickening of anaerobic digested sludge


Please contact us for more applications and details.

Features and Advantages of KDS Separator



Point ▶ Small Footprint - 1/3 of conventional devices


KDS separator does not require a wide space and its noise and vibration is very little. Therefore, it is possible to design and install in a client's existing space.



Point ▶ Clog-free - Stable Processing. Problem-free!


Kendensha's unique 'self-cleaning' mechanism prevents clogging on the screen, so backwash is not required. Treatment capacity reduction due to clogging does not occur. In short, continuous and stable operation is possible.

KDS Separator's self-cleaning mechanism
Structure of KDS separator's self-cleaning function

■No Need for Backwash

By our original self-cleaning mechanism, backwash is not needed during operation. It reduces water consumption and is environmentally friendly, as well.

■Silent, Low Vibration and Low Power Consumption Design

KDS separator is able to be driven by a small motor because it is designed not to put a heavy load on it.
Since the motor is small, its noise and vibration is low comparing to machines with large motors mounted. The power consumption is reduced to 1/10.


Waste treatment

Point ▶ Applicable for wide variety of sludge properties. Easily adjustable!


example of KDS separator installation
An Example of KDS Separator Installation (livestock wastewater)

Variations in sludge properties are accommodated by adjusting the rotational speed of the oval-plate units and the pressure of the pressure plate. Complex adjustments are not required.

For example, if your priority is treatment capacity, increase the rotational speed of the oval-plates and reduce the pressure of the plate to improve it.
On the contrary, if you want high dryness of discharge cake, you can reduce the water content by slowing down the oval-plate units' rotation and increasing the pressure of the plate.

When the sludge properties are such that pressurisation causes a huge amount of solids to leak into the filtrate (e.g. containing quite an amount of oil), the clarity of the filtrate can be improved by reducing the pressure of the plate.An adjustable pressure plate, attached at the top of the filter screen, dewaters sludge and gradually reduces the volume of it. Dewatering ability has been improved by adjusting the speed of oval-plate rotation and the plate pressure according to the sludge properties.

KDS Separators are in use as a solid-liquid separator or a sludge dewatering device in various fields.

Application Examples

  • Livestock wastewater
  • Waste oil (grease trap, machine oil, etc.)
  • Plant wastewater
  • Plastic recycling wastewater
  • Food processing wastewater etc.


Point ▶ Customer Support


Consumable parts are replaced by exchanging a whole module. This makes quick restoration possible. By standardizing consumable parts, the supply is stabilized and the cost of maintenance is reduced.

In case of malfunction, please check with Troubleshooting and contact us if the problem is not solved.

KDS Separator Thickening/Solid-Liquid Separation

MODEL Nominal Treatment Width
Number of Oval Plate Rows Motor
Sludge Treatment Capacity
(Clean Water Conversion Flow Rate:m3/hr)
Sludge Flow Rate for Reference (the concentration of 1%)
SS-2.56 236 6 0.1 20 (8) 2
SS-312 280 12 0.2 45 (23) 4.5
SS-412 380 12 0.2 55 (30) 5.5
SS-512 480 12 0.2 80 (38) 8
SS-612 580 12 0.4 100 (45) 10
SS-616 580 16 0.4 130 (60) 13
SS-812 780 12 0.75 200 (98) 20
SS-912 880 12 0.75 230 (107) 23
SS-1212 1180 12 0.75 300 (144) 30

Standard Model : 1.0mm gap, 200V three-phase motor
Please Note :
- Treatment Capacity is for reference and differs depending on the concentration and the properties of wastewater.
- Electric Capacity is for reference and may change depending on the specifications and the properties of wastewater.
Please contact us for other special specifications ( e.g. cleaning nozzles, motor coatings ).

KDS Separator - Table of Dimentions

SS-2.56 (494) 243 (617) (581) (42) (9) 174 (191)
SS-312 612 300 (1364) (1314) (164) (8) 400
SS-412 712 400 (1364) (1314) (164) (8) 400
SS-512 812 500 (1364) (1314) (164) (8) 400
SS-612 912 600 (1364) (1314) (164) (8) 400
SS-616 912 600 (1697) (1647) (164) (8) 400
SS-812 ※(1160) 800 (1680) (1644) (144) (8) 550
SS-912 ※(1260) 900 (1680) (1644) (144) (8) 550
SS-1212 ※(1560) 1200 (1680) (1644) (144) (8) 550

Please Note : The measurement is from one end to the other of the cover.
Click a model to download the outline drawing.

Choose KDS Separator for flocculation and dewatering!


KDS Dewatering System

Sludge Dewatering System
KDS Dewatering System

Please feel free to contact us. We will suggest a total solution including KDS Separator dewatering model, the selection of flocculants and automatic polymer preparation system.

Product Finder

The result of the simulation helps us to provide accurate quotations.

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