GN Separation has recently completed the assembly of two GNLWS364 3-phase decanter centrifuges, designed for efficient solid-liquid-liquid separation. These high-performance units offer reliable and precise separation for various industries, ensuring high efficiency and consistent operation. Continue reading →

GN Separation is pleased to announce the recent successful shipment of high-performance solids control equipment to a valued overseas client. This delivery reflects our ongoing commitment to providing advanced, durable, and cost-effective solutions for global drilling operations. Continue reading →

GN Separation has recently completed the assembly of its GNLWS554 3-phase decanter centrifuge, which is now ready for shipment to the United States. The system will be deployed for the treatment of oily sludge—an industrial byproduct that poses significant environmental and operational challenges.

The Role of Three-Phase Decanter Centrifuges in oil sludge treatment

Oily sludge, generated during oil extraction, refining, and storage, contains a complex mixture of oil, water, and solids. Traditional treatment methods often fall short in achieving effective separation, resulting in high disposal costs and environmental compliance risks.

GN’s 3-phase decanter centrifuge provides a reliable, one-step solution to efficiently separate oil, water, and solids. Utilizing high-speed centrifugal force, the GNLWS554 accelerates the gravitational separation process, enabling oil recovery and significant reduction in waste volume.

Designed to perform in harsh industrial conditions, the GNLWS554 offers enhanced separation efficiency and robust operational reliability, making it an ideal alternative to conventional treatment systems.

Key Features of the GNLWS554 3-phase decanter centrifuge

1. Dual-Motor Drive with VFD Precision Control
   The GNLWS554 features a dual-motor design with independent VFD control for both bowl and scroll. This allows operators to precisely adjust the differential speed for optimal separation across varying feed conditions.
2. Tungsten Carbide Wear Protection
   To withstand the abrasive characteristics of oily sludge, all critical components—such as scroll flights and discharge ports—are protected with tungsten carbide tiles and sleeves. This significantly extends service life and reduces maintenance costs.
3. Adjustable Centripetal Pump System
   The built-in centripetal pump allows for on-the-fly adjustment of the liquid phase interface. Operators can easily control the separation boundary between the oil and water phases, providing flexibility for different feed compositions and compliance standards.

Wide-Ranging Applications Across Industries

In addition to oily sludge treatment, GN’s three-phase decanter centrifuges are widely used in various sectors:

Food & Beverage: Fat and solid separation in dairy, edible oil, and starch processing

Chemical & Pharmaceutical: Recovery of catalysts, purification of emulsions, and byproduct separation

Municipal Wastewater: Grease and sludge separation in sewage treatment plants

Mining & Minerals: Dewatering tailings and recovering minerals from slurry

The GNLWS554’s performance-proven design—featuring a dual-motor drive, wear-resistant materials, and real-time interface control—ensures stable, high-efficiency operation in all these demanding environments.

As industries face growing regulatory pressures and rising treatment costs, GN Separation’s three-phase decanter centrifuge provides a sustainable, cost-effective solution for sludge and waste management.
For more information, visit GN Separation’s website or contact our team directly.

GN Separation has recently completed the delivery of a Hydraulic Drive Decanter Centrifuge (Model: GNLW364-FHD) to an overseas starch processing facility. Powered by Viscotherm’s advanced hydraulic technology, this system delivers efficient, high-performance solid-liquid separation, particularly for high-viscosity applications. Continue reading →

Recently, GN Separation successfully completed the production of two GNLW364 sewage sludge dewatering decanter centrifuges for an overseas environmental protection company. Continue reading →

The decanter centrifuge, a type of mechanical separation equipment, has a long history of application dating back to the early 18th century. Initially used in chemical production, it has since found wide adoption across various sectors including pharmaceuticals, metallurgy, dyes, food processing, brewing, ceramics, and environmental protection. Today, despite its long-standing use, much of the industry still relies on intermittent operation modes. However, as industrial equipment technology continues to evolve, end-users are placing increasingly high demands on equipment performance, automation, and sustainability — and the decanter centrifuge industry is no exception. Continue reading →

GN Separation has recently completed the fabrication and delivery of three GNLW764 decanter centrifuges to a sugar processing facility in Europe. These high-capacity machines are specifically engineered for dewatering applications and will play a vital role in treating wastewater generated during sugar beet washing operations. Continue reading →

The decanter centrifuge is not only a specific type of centrifuge but also a key product offered by GN Separation a manufacturer specializing in Decanter centrifuge technology. To help users better understand both the equipment and the manufacturer, the following addresses common concerns and practical questions related to purchasing and operating a decanter centrifuge.

1. How Can You Measure the Moisture Content of Sludge Before, During, and After Decanter Centrifuge Treatment?

When using a decanter centrifuge for sludge treatment, determining the moisture content at various stages is essential for evaluating performance. This can be done using a sludge moisture content rapid tester, which provides accurate and fast readings of both moisture and solid content in the sludge. These devices are simple to operate and allow users to monitor and adjust process parameters effectively.

2. Will a Product Manual Be Provided When Purchasing a Decanter Centrifuge?

Yes, manufacturers typically provide a comprehensive product manual with every decanter centrifuge. This includes detailed instructions for installation, operation, maintenance, and troubleshooting. In addition to the manual:

Operational guidelines and safety precautions for trial runs are shared.

Many manufacturers, including GN Separation, offer on-site technical support, including professional engineers to guide users through commissioning and routine operation to ensure proper usage and maximize efficiency.

3. What Causes High Idle Current or Abnormal Noise During Operation?

Several issues may arise during operation, but they are generally easy to diagnose:

High Idle Current:

If the centrifuge draws excessive current during idle (no-load) operation, it is often due to residual material buildup or incomplete cleaning inside the drum or conveyor. This adds resistance and increases the load on the motor.

Abnormal Noise:

Strange or unexpected sounds during operation usually point to mechanical issues, such as:

Faulty differential

Improper installation of internal components

In such cases, a thorough inspection should be carried out to identify the source of the problem. Once located, corrective measures such as realignment, part replacement, or differential servicing should be implemented.

While decanter centrifuges are technically advanced machines, confusion during purchase or operation can be avoided by:

Consulting with the manufacturer for pre-sale guidance

Relying on the provided manuals and training

Performing regular maintenance and monitoring operational indicators

For best results, engage directly with experienced technicians to ensure proper model selection, installation, and use of your equipment.