GN Separation has recently manufactured and delivered three units of its GNLW764 decanter centrifuges to a European sugar processing plant. These high-capacity machines, specifically engineered for dewatering processes, are set to be instrumental in managing the wastewater produced during sugar beet washing operations.

Role of Decanter Centrifuges in Sugar Beet Processing

The washing of sugar beets is a process that consumes significant amounts of water, resulting in the generation of large quantities of wastewater contaminated with sludge. If this wastewater is not treated, it can lead to environmental hazards and increased costs for sugar manufacturers. Decanter centrifuges, like GN Separation's GNLW764, are designed to effectively separate solids from liquids, thereby reducing the volume of wastewater and facilitating the reuse of water. By treating the effluent from beet washing, these centrifuges assist sugar processors in adhering to environmental standards, cutting down on water usage, and enhancing the sustainability of their operations.

Notable Features of GN Separation’s GNLW764 Decanter Centrifuges

The GNLW764 stands as GN Separation's largest independently developed dewatering decanter centrifuge, designed for high-volume sludge dewatering in sectors such as agriculture, mining, and tunneling. Its standout features include:

1. Duplex Stainless Steel Bowl with Centrifugal Casting
   The centrifuge's bowl, or "drum," is constructed from duplex stainless steel using centrifugal casting techniques. This method guarantees uniform material density, preventing internal flaws and ensuring dynamic stability at high rotational speeds. Consequently, the centrifuge operates smoothly and vibration-free, prolonging its service life and minimizing maintenance requirements.

2. Tungsten Carbide-Enhanced Screw and Discharge Port
   To endure the abrasive effects of solids, the screw's flights are reinforced with tungsten carbide wear plates, and the discharge port is shielded by a tungsten carbide sleeve. These materials, renowned for their exceptional hardness and resistance to corrosion, reduce downtime due to component wear and tear, ultimately lowering long-term operational expenses.

3. Automated Oil Lubrication System for Main Bearings
   The GNLW764 incorporates an automated oil lubrication system for its main bearings, providing consistent lubrication under diverse load conditions. This automation streamlines maintenance procedures, mitigates the risk of human error, and bolsters reliability—essential attributes for uninterrupted operations in challenging industrial settings.

Versatile Applications Beyond Sugar Beet Processing

Although the GNLW764 demonstrates exceptional performance in sugar beet wastewater treatment, its robust construction and high processing capacity also make it suitable for other industries that require large-scale sludge dewatering, such as mining tailings dewatering, sewage sludge dewatering, and tunneling mud recycling.

For further details regarding dewatering centrifuges, please do not hesitate to reach out to GN Separation.

GN Separation has recently completed the assembly and testing of a GNDL303 Screw Press, specifically engineered to meet the municipal sludge dewatering needs of a U.S.-based client. Designed for efficiency, durability, and regulatory compliance, this advanced system streamlines sludge processing while minimizing operational costs and environmental impact.

How the GNDL303 Screw Press Works

The GNDL303 operates by leveraging a slowly rotating screw (auger) housed within a screen bowl reinforced with fixed and floating rings. As sludge enters the unit:

1. The screw presses the sludge against the bowl’s inner wall, forcing water through a permeable screen.
2. The dewatered sludge exits as a compact, dry cake, ready for further processing or disposal.

This mechanical dewatering process ensures high solids retention and low moisture content in the output, optimizing downstream handling.

Key Features Enhancing Performance & Reliability

1. Robust 304 Stainless Steel Construction

• Corrosion Resistance: The entire unit is built from 304 stainless steel, a material renowned for its durability in harsh environments.
• Longevity: Withstands the abrasive and corrosive nature of municipal sludge, reducing maintenance needs and extending equipment lifespan.

2. Variable Frequency Drive (VFD) for Precision Control

• Adjustable Speed: The VFD allows operators to fine-tune the screw’s rotation speed, accommodating variations in sludge consistency and flow rates.
• Energy Efficiency: Optimizes performance while minimizing power consumption, lowering operational costs.

3. US-Standard PVC Pipe Connections

• Seamless Integration: The unit’s PVC pipe interfaces comply with U.S. plumbing standards, ensuring compatibility with existing infrastructure.
• Reduced Installation Time & Costs: Eliminates the need for costly modifications, accelerating deployment and improving overall efficiency.

Why the GNDL303 Stands Out

• Comprehensive Solution: Combines corrosion-resistant materials, adaptive speed control, and regulatory-compliant design for reliable municipal sludge dewatering.
• Sustainability Benefits: Reduces sludge volume, lowers transportation costs, and supports environmentally responsible water treatment practices.
• Client-Centric Design: Tailored to meet the specific needs of U.S. municipal facilities, ensuring smooth operation and compliance with local codes.

Conclusion

The GNDL303 Screw Press represents GN Separation’s commitment to delivering high-performance, cost-effective, and sustainable solutions for wastewater treatment. We are confident that this system will exceed our client’s expectations, providing superior dewatering efficiency and long-term reliability while contributing to their operational and environmental goals.

Recently, GN Separation successfully carried out an on-site equipment commissioning project in the Middle East. The project, which centered around a containerized sludge dewatering system, received high praise from the client. This recognition was due to the outstanding technical skills displayed by GN's after-sales service engineers and the system's excellent operational performance.

The commissioning primarily focused on the GNLW654-VFD sludge dewatering centrifuge, a machine specifically engineered for the challenging task of solid-liquid separation. This centrifuge was deployed to treat effluent water generated from the washing of oily soil—a process of great significance in the Middle East's unique environmental setting.

The Middle East is famous worldwide for its extensive oil reserves, but this also presents a distinct environmental challenge. During oil extraction and transportation, accidental spills frequently contaminate the soil. Given that much of the region is arid desert, soil is a valuable and limited resource. Thus, reclaiming uncontaminated soil through effective washing methods is not only an environmental necessity but also a strategic requirement for sustainable land utilization.

At the client's site, the process of washing contaminated soil starts with an intensive cleaning of oil-contaminated soil using water mixed with specialized chemicals. This process releases the oil and fine particles from the soil matrix. The resulting slurry is then directed to a flotation tank, where air bubbles are introduced to aid in the separation of oil and suspended solids. The buoyant oil and particles rise to the surface, forming a scum layer that is skimmed off and removed. However, the real challenge lies in efficiently treating the remaining sludge—a mixture of water, residual oil, and fine solids. This is where GN Separation's technology proves invaluable.

The GNLW654-VFD centrifuge is designed to handle such complex separations with precision and efficiency. By employing centrifugal force, the machine effectively separates the liquid phase from the solid phase, producing clarified water and a drier, more manageable sludge cake. This process is crucial not only for adhering to environmental regulations but also for reducing the volume of waste that needs to be disposed of, thereby lowering operational costs and minimizing environmental impact.

During the commissioning phase, GN's after-sales service engineer showcased his deep technical expertise. He carefully adjusted the centrifuge's operating parameters, including rotational speed and differential speed, to achieve the best possible separation efficiency. The objective was to ensure that the clarified liquid phase met strict clarity standards while the sludge cake reached the desired dryness, making it easier to handle and dispose of.

The client's feedback has been extremely positive. They commended not only the technical competence of GN's engineers but also the durability and efficiency of the equipment. The successful implementation of the sludge dewatering system has allowed the client to improve their environmental management, comply with regulatory requirements, and enhance operational efficiency.

This project highlights GN Separation's dedication to providing customized solutions that meet the specific needs of clients across various industries and geographical locations. By integrating advanced technology with exceptional after-sales support, GN is more than just an equipment supplier; it is a reliable partner in achieving sustainable and efficient operations. If you have any inquiries, please do not hesitate to contact GN Separation.

GN Separation is pleased to announce our participation in IFAT Eurasia 2025, the leading trade fair for environmental technologies in the Eurasian region. The event is scheduled to take place from May 15th to 17th, 2025 at the Istanbul Expo Center, and GN will be exhibiting at Hall 11, Booth No. 105E.