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)

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

Key Technical Parameters Explained

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.

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

       Jiangsu Longdai Environmental Protection Group Co., Ltd. is an environmental protection equipment manufacturer with more than 15 years of experience. It has provided a large number of sophisticated environmental protection equipment at home and abroad, established three branches in China, and cooperated with many universities to build Longdai R&D center. There are 4 middle doctors, 10 masters, and 25 senior engineers.

       Main business: "Petrochemical Wastewater Treatment, Urban and Rural Wastewater Treatment, Waste Gas Collection and Treatment, Industrial Wastewater Treatment, etc."

       Main equipment: "Integrated treatment equipment, grille decontamination machine, sand water separator, mud scraper, air flotation device, dosing device, sludge thickener, rotary drum micro filter, conveyor,Manual and Mechnical Bar Screen ,Bridge Scrapers ,Ordor Control System,Belt/Screw Conveyor,Disc Filter etc."

       Work follows 5 principles:

1.Sales

       The sales team keeps abreast of market prices and provides customers with the most accurate and most favorable quotations.

2.design

       The technical team participates in technical exchange meetings every year, exchanges experience with professionals, continuously improves technical competitiveness, and provides customers with the clearest and most practical design solutions.

3.manufacture

       The processing team controls the manufacturing details of each equipment, and manufactures the most sophisticated and reliable equipment for customers.

4.transportation

       The transportation team has been to every corner at home and abroad, and has never made any mistakes, planning the best route, and transporting equipment for customers is the fastest and safest.

5.quality

       The company has passed ISO9001-2008 international standard quality system certification.

       We look forward to contacting you, please give us a chance. I hope we can trust each other for mutual benefit and win-win results.

       Best wishes.

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       The following is our company's information:

       Jiangsu Longdai Environmental Protection Technology Co., Ltd.

       Phone: 0510-87837699

       Fax: 0510-87837599

       Chinese website: www.zgldhb.com

       Foreign language website: http://www.longdaiwwt.com/

       Email: longdaicompany@126.com

       Address: No. 20, Chengwen Road, Gaocheng Town, Yixing City

       Zip code: 214214