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Technical Specifications and Applications of Horizontal Screw Decanter Centrifuges for Solid-Liquid and Three-Phase Separation
Technical Specifications and Applications of Horizontal Screw Decanter Centrifuges for Solid-Liquid and Three-Phase Separation
Specifications
Brand Name :
Longdai
Model Number :
LW
Place of Origin :
China
MOQ :
1Set
Price :
15000USD-25000USD
Payment Terms :
L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability :
100Set Per Month
Delivery Time :
30 working days
Packaging Details :
Wooden or customized
Bowl Sped :
4000r/min
Material :
SS304
Machinery :
separation centrifuge
Easy maintenance :
Quick disassembly and cleaning
Collocation :
Double motor with double transduce
Drum Speed :
Appr 3200r/min
Weight :
1400
Features :
Continuous operation, high efficiency, low maintenance
Discharge Type :
Spiral Screw Discharge
Centrifuge Type :
decanter centrifuge
Description

Horizontal Screw Decanter Centrifuge Technical Documentation

1. Product Overview

The horizontal screw decanter centrifuge (commonly referred to as a "decanter centrifuge") is a highly efficient, continuous solid-liquid separation device widely used in municipal wastewater treatment, industrial effluent processing, and sludge dewatering applications. It utilizes high-speed rotation to generate centrifugal forces (typically 2,000–4,000 times gravity) to rapidly separate solids from liquids in suspensions.

Key Advantages

  • Continuous Operation: Capable of 24/7 uninterrupted operation with minimal downtime for maintenance
  • High Separation Efficiency: Separation factor up to 2,000–4,000 × g, ensuring high throughput and clarity
  • Automated Control: Integrated PLC and HMI systems enable remote monitoring and control
  • Energy & Resource Efficient: Low power consumption and reduced chemical usage, aligning with sustainability goals

2. Technical Specifications

Two-Phase Decanter Centrifuge (Solid-Liquid Separation)

Model Bowl Diameter (mm) Capacity (m³/h) Main Motor Power (kW) Separation Factor (×g) Machine Weight (kg) Dimensions L×W×H (mm)
LW250 250 2–5 7.5–11 2,835 1,250 2,600 × 1,200 × 900
LW350 350 5–10 15–22 2,600 2,200 3,200 × 1,400 × 1,050
LW450 450 10–18 30–45 2,450 4,200 4,300 × 1,490 × 1,150
LW530 530 15–25 45–55 2,300 6,500 4,745 × 1,605 × 1,380
LW650 650 20–35 75–90 2,150 9,300 5,105 × 1,655 × 1,470
LW750 750 30–50 90–132 2,033 11,000 5,500 × 1,800 × 1,600

Three-Phase Decanter Centrifuge (Solid-Liquid-Liquid Separation)

Model Max. Capacity (m³/h) Main Motor Power (kW) Weight (kg) Dimensions L×W×H (mm) Application Areas
LWS450 10–18 45–55 4,200 4,300 × 1,490 × 1,150 Oilfield waste oil, tank bottom sludge
LWS530 15–25 52–67 6,500 4,745 × 1,605 × 1,380 Food waste, coal tar
LWS650 20–35 75–120 9,300 5,105 × 1,655 × 1,470 Vegetable oil extraction

Key Technical Parameters Explained

Parameter Range / Specification Description
Bowl Speed 1,500–4,000 RPM Higher speed increases centrifugal force and separation efficiency
Length-to-Diameter Ratio 3:1 to 4:1 Larger ratio = longer residence time; suitable for fine particles
Differential Speed 5–50 RPM Speed difference between bowl and scroll; critical for cake transport
Separation Factor 2,000–4,000 × g Determines separation sharpness and liquid clarity
Solid Recovery Rate >95% Enhanced by BD plate (beach discharge) technology
Cake Moisture Content 70%–80% Reduces sludge moisture from ~99% down to 70–80%

3. Working Principle

The horizontal screw decanter centrifuge operates on the principle of centrifugal sedimentation:

Separation Process:

  1. Feed Introduction: Suspension enters the rapidly rotating bowl via the feed pipe.
  2. Centrifugal Separation: Under centrifugal force (typically 3,000–5,000 × g), denser solid particles settle against the bowl wall forming a solid ring, while lighter liquid forms an inner liquid layer.
  3. Solids Conveying: A scroll conveyor (rotating slightly slower than the bowl due to differential speed) continuously pushes solids toward the conical end of the bowl.
  4. Discharge:
    • Liquid phase exits continuously over adjustable weir plates.
    • Solid phase (cake) is discharged continuously through the solids outlet at the cone end.Technical Specifications and Applications of Horizontal Screw Decanter Centrifuges for Solid-Liquid and Three-Phase Separation

4. Application Fields

Environmental & Water Treatment

  • Municipal Wastewater: Sludge thickening and dewatering to reduce transport and disposal costs
  • Industrial Effluents: Treatment in chemical, pharmaceutical, and food processing industries
  • Livestock Wastewater: Manure separation in poultry and livestock farms
  • Construction Slurry: Dewatering of tunnel boring (TBM) slurry and pile foundation drilling mud

Other Industrial Applications

  • Oil & Gas: Drilling mud solids control, oily sludge treatment, and waste oil recovery
  • Food Industry: Plant protein separation, juice clarification, starch dewatering
  • Bioenergy: Digestate dewatering from biogas plants, biodiesel production
  • Mining: Tailings dewatering and mineral classification

Technical Specifications and Applications of Horizontal Screw Decanter Centrifuges for Solid-Liquid and Three-Phase SeparationTechnical Specifications and Applications of Horizontal Screw Decanter Centrifuges for Solid-Liquid and Three-Phase Separation

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Technical Specifications and Applications of Horizontal Screw Decanter Centrifuges for Solid-Liquid and Three-Phase Separation

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Product Detail
Brand Name :
Longdai
Model Number :
LW
Place of Origin :
China
MOQ :
1Set
Price :
15000USD-25000USD
Payment Terms :
L/C,D/A,D/P,T/T,Western Union,MoneyGram
Contact Supplier
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Technical Specifications and Applications of Horizontal Screw Decanter Centrifuges for Solid-Liquid and Three-Phase Separation

Jiangsu Longdai Environmental Protection Group Co., Ltd.

Verified Supplier
6 Years
jiangsu
Since 2010
Business Type :
Manufacturer, Seller
Main Products :
Decanter Centrifuge, Disc Centrifuge, Reverse Osmosis Machine
Total Annual :
7000000-8000000
Employee Number :
64~100
Certification Level :
Verified Supplier
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