Screw Decanter (Separator)

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Application – Screw Decanter (Separator)

A High effocoemt device which uses high centrifugal force in separation adulteration and impurities of excreta or livestock wastewater

  • Separates microscopic impurities of excreta treatment plant
  • Separates microscopic impurities of livestock watsewater treatment plant
  • Separates microscopic impurities of food waste
Specification – Screw Decanter (Separator)
Standard Capacity (㎥/hr) G-force Motor (Kw) Size (L×W×H mm) Weight (kg)
EWHA 250MTDI 5~8 1,800~2,500G 5.5/(1.5) 1,850×550×450 1,800
EWHA 300MTDI 8~15 1,800~2,200G 7.5/(2.2) 2,000×600×500 2,000
EWHA 350MTDI 15~20 1,800~2,200G 18.5/(3.7) 2,500×855×825 2,500
EWHA 400MTDI 20~25 1,800~2,200G 30/(7.5) 2,900×1,150×1,100 3,500
EWHA 450MTDI 25~30 1,800~2,200G 45/(11) 3,550×1,400×1,450 5,000
EWHA 500MTDI 30~40 1,800~2,200G 45/(11) 4,600×1,700×1,450 5,500
EWHA 600MTDI 40~50 1,800~2,200G 55/(15) 5,200×1,900×1,720 7,000
EWHA 720MTDI 50~60 1,800~2,200G 75/(22) 5,400×2,050×1,850 8,000

*Above specification may change from our company’s constant research and development activity.

Delivery Performance – Screw Decanter (Separator)
N O . Installation Area Capacity (㎥/hr) Quantity
1 Incheon Environmental Corporation 55 5
2 Gwangmyeong City Manure Treatment Plant 35 3
3 Korea Water Resources Corporation 40 2
4 Jeongup Livestock Manure Public Treatment Facilities 35 2
5 Boeun Gun Livestock Wastewater Treatment Plant 35 2
6 Indonesia Mokbang Wastewater Treatment Plant 25~35 2
7 Siheung City Manure and Livestock Wastewater Treatment Plant 20 2
8 Yeoncheon Gun manure public treatment facility 20 2
9 Boeun-gun manure sanitation plant 10 2
10 Asan city manure and livestock manure public treatment facility 10 2

*Sales over 30 sites including mentioned installation areas

Patents lists – Screw Decanter (Separator)
Classification Contents No. Application date egostration date
patent Decanter type centrifuge- (Coagulation,Concentration and Dehydration) 10-0740608 2007-03-02 2007-07-11
patent Channel type mixed coagulation divice having a clogging prevention funtion 10-0949462 2008-03-19 2010-03-18
Utility Model Multi-Bush for centrifugal separator with external exchangeable variable diameter and discharge port 20-0445181 2008-03-19 2009-06-30
patent Internal reduction gear box type screw decanter 10-0974949 2010-04-20 2010-08-03
patent Sludge treatment equipment 10-0993173 2010-08-18 2010-11-03
patent Channel sludge mixed flocculation equipment 10-0999357 2010-09-06 2010-12-02
patent Corrosive gas backflow prevention device of centrifugal dehydrator 10-1008516 2010-11-02 2011-01-10
patent Centrifugal dehydrator with distribution chamber of clog prevention structure 10-1231066 2012-07-18 2013-02-01
patent Bearing with anti-seize function 10-1256854 2012-11-12 2013-04-16
patent Centrifugal separator with variable bushing 10-1321078 2013-07-19 2013-10-16
patent Centrifugal separator with discharge venting 10-1433308 2014-03-12 2014-08-13
patent Centrifugal separator with discharge venting 10-1422567 2014-03-12 2014-07-17
patent Rapid liquid polymer melting device 10-1209520 2012-07-18 2012-12-03
Feature-Decanter Type Centrifuge(Dehydrator, Thickener, Separator)


Horizontal Structure


The horizontal structure screw decanter is a new concept screw decanter newly developed in 2016. It arranges main driving motor and speed motor in horizontally intensive structure to minimize the occurrence of noise and vibration.

Strength of Horizontal Structure
*Lowers the center of load of the device by arranging main drive motor and back drive motor in horizontally intensive structure. It enables stable operation and also improves operation environment with less noise and vibration.
*Enhanced stability and durability through low frame height and improved solidity.
*Enhanced cake dehydration efficiency through extended torque value regulating range for scroll through tension dispersion of the driving part.
*Enhanced lifespan through minimized bending load between axes with left and right placement of reduction gear and pulley part.


Internal reduction gear box type


Internal reduction gear box type

Internal reduction gear box type decanter is a high-tech screw decanter developed in 2010. The external gear box, source of vibration in the existing screw decanter, is directly attached to the bowl and it prevents the vibration occurrence. It also prevents the malfunctioning in advance and has compact size.

*Development of internal gear box type decanter, vibration of cantilever structured external reduction gear.

*Weight lightening and improved durability of reduction gear through development of reduction gear for screw decanter.

*Enhanced dehydration performance through stable high-speed operation by the improved structural vibration.

Difference from the Existing Screw Decanter and Strength

*No reduction gear influencing the external vibration of the supporting bearing.
*Reduction gear is built in the bowl and it allows for the precise correction of dynamic balance and minimizes vibration during the high-speed rotation.
*Minimized vibration allows for increased speed of screw scanter and improves the performance of the decanter.
*The solution for vibration increase source drastically extends the device lifespan.
*Compact device with built-in reduction gear.


External Exchanging Multiple Bush


Extended lifespan and improved performance by changing the cake discharge caliber and exchanging the bush on site according to sludge characteristic.

*Discharge caliber is changed by exchanging liner and bush within the same bush housing

Importance of Solid’s Discharge Bush
*Among the screw decanter parts, discharge bush has the most wear
*Uneven wear of discharge bush causes vibration of high-speed bowl and causes malfunctioning
*Constant operation in the excessive vibration state caused by the unavailable on-site bush exchange leads to increased number of malfunctioning and accidents.



Double cover cake outlet of Screw Decanter (Patented)



Dividable cover of Screw Decanter



Improved in abrasion resistance of the screw(Preliminary tiling, usage of tungsten powder)