



In potato processing plants, slice washing generates significant volumes of wastewater containing suspended starch solids. Discharging this water without treatment wastes both a recoverable byproduct and a valuable water resource. A recent GN shipment successfully brought a solution to this issue by using decanter centrifuge.

GN supplied a decanter centrifuge sized for the facility’s throughput. The unit operates on the counter-current principle, with the bowl and screw conveyor rotating at differential speeds controlled by a variable frequency drive(VFD). This arrangement allows the separation parameters to be adjusted as the feed characteristics vary with production rates. The bowl length-to-diameter ratio, exceeding 3.0, provides sufficient residence time for fine starch particles to settle out of suspension.
Several design features make this installation practical for food processing duty. The bowl cylindrical and conical sections are manufactured from Duplex Stainless Steel 2304, with other wetted parts in SS304—materials selected for corrosion resistance and cleanability. Tungsten carbide tiles protect the screw conveyor at wear points, extending service intervals. The PLC-controlled VFD cabinet provides consistent operation with minimal operator attention.

This installation illustrates a broader capability: GN supplies decanter centrifuges for starch recovery from potato, wheat, corn, and root crop processing, with models available for different capacity ranges. For this customer, the result is reduced water consumption, recovered product value, and a separation process that runs with minimal supervision.


GN Solids Control has secured another complete mud circulation system package order for Kuwait, marking another milestone in the brand’s long-term cooperation with Middle Eastern oil operators. Covering standalone solids control equipment to full integrated mud treatment packages, this new contract further proves global clients’ recognition of GN’s reliable engineering and turnkey service capacity.



GN SOLIDS CONTROL has long been recognized for its decanter centrifuge products, serving drilling contractors and mud service companies worldwide with solutions ranging from 9 inch to 22 inch bowl diameters. Recently a successful shipment for our GNLW554 model decanter centrifuge package to our foreign clients also proved GN’s position in providing the best result for drilling fluids cleaning.

The GNLW554 decanter centrifuge features a bowl diameter of 550 mm and an effective bowl length of 1800 mm, yielding a length to diameter (L/D) ratio of 3.2. This geometric proportion is critical: an elevated L/D ratio provides an extended settling zone, increasing residence time and enhancing the capture efficiency of fine and ultra-fine particulates. At the core of the GNLW554’s durability lies a bowl assembly engineered with materials selected for both mechanical strength and corrosion resistance. The cylindrical and conical sections are fabricated from Duplex Stainless Steel 2304 via centrifugal casting—a process that yields a dense, homogeneous microstructure with superior resistance to chloride-induced stress corrosion cracking, a common failure mode in wastewater environments containing aggressive chemical agents.

Since in wastewater treatment applications, polymeric reagents promote agglomeration of fine suspended particles into larger, denser flocs amenable to centrifugal settling. Therefore GN recommends a polymer dosing unit to be accompanion with decanter centrifuge. A polymer dosing unit which also included in this shipment will show highly immportance to maintain the efficiency of the whole cleaning process. This integration enables closed-loop regulation of polymer concentration in response to real-time feed solids loading, ensuring that chemical consumption is continuously matched to process demand.
Through its growing presence in overseas projects attests to the reliability and adaptability that GN SOLIDS CONTROL embeds in every rotating assembly, providing plant operators with a trusted workhorse for the most demanding dewatering challenges.


GN SOLIDS CONTROL is well-known for its unique shale shaker design, but as the core part of a shale shaker, the shaker screen is also a non-negligible advantage that GN have.
GN SOLIDS CONTROL has held a unique position in China as the sole manufacturer of API-certified shaker screens (API RP 13C / ISO 13501) until 2022. This certification is not merely a label; it is a binding guarantee of three critical metrics: exact cut point (D100), conductance (kD/mm), and non-blanked open area. Without API certification, “mesh count” can be misleading since the usage of rectangular grids and multiple layers of screens.

Beyond API certification, GN utilizes a patented polyurethane bonding system between the screen and the screen basket. Comparing with conventional screens which rely on foam or rubber seals that degrade under pressure and hydrocarbon exposure, polyurethane provides superior abrasion resistance, chemical compatibility, and dimensional stability, eliminating by-pass of solids and extending service life.

Since different application scenarios entail distinct parameter requirements from clients for shaker screens, GN’s shale screen design covers all major international form factors, manufactured under the same API-certified process, including hook strip flat screen, steel frame screen, pretension frame screen, wave screen, hook strip soft screen, etc.
From API-confirmed cut points to a polyurethane sealing patent and full size-range availability, GN delivers reliability that is documented. For more details or quotation needs, please contact GN SOLIDS CONTROL.
GN SOLIDS CONTROL is pleased to announce the successful delivery of a 14 inch sludge dewatering centrifuge package to clients in Southeastern Asia. This package including a 14 inch sludge dewatering centrifuge with a 1000L chemical dosing unit.
Designed specifically for removing liquid from solid phase materials, the GN SOLIDS CONTROL 14 inch sludge dewatering centrifuge can prove a high density difference of solid and liquid with low viscosity by its extraordinary 8.5 degree beach angle. This design delivers drier solids, clearer discharge, and lower operating costs. For sludge dewatering applications—from municipal to industrial—the 14-inch centrifuge strikes an ideal balance between compact footprint and high performance.
In order to ensure there will be a stable and efficient centrifuge condition, the GN SOLIDS CONTROL 14 inch sludge dewatering centrifuge is adopting 2 phase stainless SUS2205 steel to wild its bowl and helical shaft, all main parts will experience dynamic balancing test for 3 times after it was manufactured in case the stability won’t be compromised.
Another highlight of the 14 inch sludge dewatering centrifuge package is the 1000L chemical dosing unit. Engineered for accompanying with dewatering centrifuge, the 1000L polymer dosing unit was designed to providing accurate chemically enhanced flocculation of colloidal and ultra-fine drilled solids during the whole centrifuging process.
Through this shipment to our client in Southeastern Asia, it definitely reinforces GN SOLIDS CONTROL’s position as a trusted partner for centrifuge field worldwide.
In the realm of wastewater management and environmental sustainability, the GNLW364 Decanter Centrifuge stands out as a testament to technological innovation and engineering excellence. Developed by a leading Chinese manufacturer specializing in environmental pollution control equipment, this centrifuge is designed to reduce operational costs and minimize environmental impact, striking a perfect balance between economic viability and eco-friendliness. This article delves into the features, applications, and significance of the GNLW364 Decanter Centrifuge in overseas crystal salt dewatering projects and beyond.
The GNLW364 Decanter Centrifuge is a marvel of engineering, combining high processing capacity with reduced energy consumption. Its durable construction and reliable performance are a result of the premium materials and advanced manufacturing techniques employed. The centrifuge is engineered to perform consistently even in harsh operating conditions, ensuring a prolonged service life and minimizing maintenance requirements. Its cutting-edge design and efficient operation make it an ideal solution for various industries, including the demanding crystal salt dewatering process.
In overseas crystal salt dewatering projects, the GNLW364 Decanter Centrifuge plays a pivotal role in removing impurities and excess water from salt brine, enabling the production of high-quality crystals. The centrifuge’s ability to separate solids from liquids effectively is crucial in this process, as it ensures a higher purity of the final salt product. By optimizing the separation of salt crystals from the brine, the GNLW364 contributes to increased productivity, reduced waste, and a more sustainable production cycle.
One of the key features of the GNLW364 is its 8.5-degree beach angle design, which enhances the separation efficiency in the treatment of complex and challenging feed materials. This design ensures that solids and liquids are separated with utmost precision, resulting in a cleaner separation and higher solids recovery. The centrifuge’s high rotational speed and advanced engineering guarantee optimal performance in various applications, from市政 wastewater treatment to industrial processes.
The GNLW364 series offers a range of models tailored to diverse customer needs. For instance, the compact 9-inch mini centrifuge is ideal for smaller-scale operations or space-constrained environments. Its small size belies its powerful performance, making it a popular choice for clients requiring efficient solid-liquid separation. Furthermore, the recently introduced GNLW364FT model, designed for chemical plants, demonstrates the series’ versatility and adaptability to different industries and applications.
The GNLW364 Decanter Centrifuge series represents the pinnacle of eco-friendly and efficient separation technology. Its widespread adoption in municipal wastewater treatment projects across the globe not only highlights its superior processing environmental credentials but also underscores its adaptability to meet the diverse requirements of different regions and sectors. As the world continues to prioritize sustainability, the GNLW364 series, with its relentless pursuit of innovation and optimization, is poised to play a significant role in shaping the future of water management and environmental protection. By embracing the GNLW364 Decanter Centrifuge, industries can not only enhance their operational efficiency but also contribute to a more sustainable and cleaner planet.
The GNLW364 Decanter Centrifuge is an ideal solution for dewatering applications in overseas crystal salt projects. Engineered with precision, all parts that come into contact with materials are made from duplex stainless steel 2205, ensuring durability and resistance to corrosion.
The GN T series decanter centrifuge, with a beach angle of 8.5 degrees, is designed for efficient dewatering and thickening. This centrifuge excels in processing municipal and industrial wastewater sludge, meeting the highest dewatering requirements. It is particularly effective for materials with large particle sizes, significant density differences between solid and liquid phases, low viscosity, high concentration, and substantial treatment capacity. To enhance the dewatering process, flocculants can be added to coagulate fine particles into larger ones, making separation more efficient.
The GNLW364 Decanter Centrifuge is versatile and applicable to a wide range of materials including drilling mud, oily sludge, cutting fluids, and various types of wastewater (environmental, municipal, industrial, chemical). It is also effective for dewatering salt mud, magnesium aluminum emulsions, steel-making wastewater, and sludge from mining and construction activities. Additionally, it is used in the concentration and dehydration of salt crystals, kaolin grading, and the separation of oil sands.
With its robust design and high-efficiency operation, the GNLW364 Decanter Centrifuge is a reliable choice for challenging dewatering tasks, ensuring optimal performance and longevity in diverse industrial applications.