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The GNLW364-VFD sludge dewatering centrifuge is a versatile and reliable solution for environmental companies worldwide that need efficient solids-liquid separation. Designed by GN Separation, this equipment is widely used in industries such as wastewater treatment, environmental remediation, municipal services, and industrial sludge management. Its primary function is to reduce the moisture content of sludge, improving disposal efficiency and lowering overall handling costs.

The GNLW364 model features a bowl with a 14-inch diameter and a length-to-diameter ratio of 4.2:1, ensuring a high separation factor and optimal performance. Its variable frequency drive (VFD) control system allows operators to adjust the bowl and scroll speeds according to the type of sludge and required dryness. This flexibility makes it a preferred choice for companies dealing with a variety of waste streams and sludge characteristics.

One of the key advantages of the GNLW364-VFD centrifuge is its ability to work continuously with minimal operator intervention. The robust stainless steel construction, precision-machined components, and wear-resistant protection on the scroll and discharge ports contribute to its durability in demanding conditions. Additionally, the machine’s automated control system simplifies operation, enabling technicians to optimize performance in real-time.

For overseas environmental companies, equipment reliability and ease of maintenance are critical factors. GN Separation provides the centrifuge with global service support, a modular design for straightforward spare part replacement, and clear documentation for installation and operation. This ensures smooth integration into existing sludge treatment systems, whether at municipal plants, industrial sites, or environmental projects abroad.

The GNLW364-VFD is not only cost-effective but also environmentally beneficial. By reducing sludge volume and improving separation efficiency, it supports sustainable practices and minimizes environmental impact. Its energy-efficient operation and compact design also make it suitable for mobile treatment systems or containerized units often used in remote or temporary projects.

In summary, the GNLW364-VFD sludge dewatering centrifuge is a robust, efficient, and adaptable piece of equipment tailored for global environmental companies. Its advanced control system, durable construction, and proven performance in sludge treatment make it an ideal solution for organizations seeking reliable solids-liquid separation technology for diverse and challenging applications.

 

In the mining and geological exploration industry, core drilling processes require specialized equipment to ensure sample quality while optimizing operational efficiency. One of the most important pieces of equipment for this purpose is the hydraulic solid-liquid separation centrifuge, specifically designed for core sampling and exploration operations.

The operating principle relies on centrifugal force to separate solid and liquid phases within drilling fluids. During core drilling, fine rock cuttings are generated, which, if not properly controlled, can affect fluid stability and compromise both sample quality and overall drilling performance. The hydraulic centrifuge efficiently removes these fine solids, keeping the fluid within the required parameters.

 

Key Benefits

• Core Sample Protection: by maintaining proper fluid quality, the centrifuge prevents contamination or alteration of the original geological sample.
• Extended Drilling Fluid Life: reducing solids content allows fluids to be reused longer, lowering replacement costs.
• Operational Risk Reduction: cleaner drilling fluids minimize torque issues, stuck pipe events, and wellbore instability.
• Compact and Portable Design: these centrifuges are often integrated into modular systems, making them highly adaptable for remote exploration sites.

Applications

The hydraulic centrifuge is not only useful in mining but also in geotechnical drilling, hydrogeological studies, and other projects requiring high-quality core samples for detailed analysis.

GN Solids Control provides reliable solid-liquid separation solutions tailored for core drilling exploration. The company’s centrifuge technology is designed to enhance efficiency, reduce operational costs, and ensure consistent and reliable results in exploration projects.

In conclusion, the hydraulic solid-liquid separation centrifuge has become an essential tool for exploration companies seeking to optimize resources and ensure dependable sampling results.

 

When choosing separation equipment, real-world performance matters more than datasheets. To support evidence-based selection, our new material separation test workshop is now completed and ready for customer trials. The facility brings together five dedicated test modules designed to mirror the operational challenges found in mining, drilling fluids management, and slurry handling. Whether you send representative samples to our lab or prefer on-site trials at your location, the goal is the same: confirm process outcomes, quantify performance, and de-risk your investment before scaling up.

What’s inside the workshop

1. Mining Vibrating Screen Test Module
   This station evaluates screening behavior for ores, tailings, and mineral slurries. We can vary feed density, particle size distribution, and screen aperture to map cut points and throughput. Results typically include mass balance, screen efficiency, moisture of oversize/undersize, and blinding tendency under different conditions.
2. Drilling Shale Shaker Test Module
   For drilling fluids, the shaker test module helps assess solids removal efficiency across API screen sizes, fluid rheology changes, and deck motion parameters. We record fluid loss, screen life indications, and the effect on downstream centrifugation requirements—useful for optimizing screen selection and solids control strategy.
3. Decanter Centrifuge Test Module
   Here we quantify separation under controlled G-force, differential speed, and feed rate. We measure centrate clarity, cake dryness, torque trends, and polymer (if any) consumption. The outcome is a performance envelope that links solids loading to achievable cut size and energy use.
4. Combined Separation Module (Shaker + Centrifuge)
   Many processes benefit from staged separation. This module allows us to test upstream screening followed by centrifugation, validating how primary cut removal improves centrifuge efficiency, reduces wear, and lowers power and chemical demand. We document the combined mass balance and incremental gains.
5. Solids Vacuum Pump Test Module
   For viscous, abrasive, or high-solids slurries, pneumatic vacuum pumps can be decisive. This station profiles suction lift, transfer distance, and cycle frequency versus material properties, helping determine the practical limits for remote or confined transfer tasks. 

How the trials work

Customers may ship samples (with MSDS and handling instructions) for controlled laboratory testing, or request field trials at their sites when scale or logistics make in-house testing impractical. Before any test, we align on objectives: target cut size, clarity, moisture, throughput, footprint, and power constraints. We then design the matrix—screen sizes, rotational speeds, feed densities—and run iterative trials to reach a robust operating window.

Deliverables you can act on

We provide a concise report with:

• Feed characterization: PSD curves, solids content, rheology notes.
• Operating setpoints and corresponding KPIs (yield, clarity, cake dryness, energy, wear indications).
• Recommended equipment configuration and scale-up guidance.
• Observations on maintenance, safety, and consumables.

This workshop is not about selling a model—it is about reducing uncertainty. With transparent data and repeatable methods, you can select equipment with confidence and document the basis for your decision.

If you would like to schedule a sample-based test or an on-site trial, let us know your objectives and constraints. We’ll propose a test plan that focuses on measurable outcomes and practical recommendations.

 

With environmental regulations tightening across the globe, oilfield service companies are under increased pressure to manage drilling and refinery waste in an efficient and eco-friendly way. Recognizing this demand, GN Solids Control has recently completed the delivery of two complete sets of GNOST-15 Oil Sludge Treatment Systems to a prominent environmental solutions company in Asia.
These modular systems are designed to recover oil, reduce waste volume, and meet discharge standards — all while lowering operational costs and environmental impact.

A Turnkey Solution for Oil Sludge Recovery
The GNOST-15 is a fully integrated system engineered to treat challenging oily sludge composed of oil, water, and fine solids. Each system includes:
Feeding Pump Module
This delivers a controlled feed of sludge into the system using a heavy-duty progressive cavity pump, ensuring stable flow and pressure throughout.
Premixing Tank Module
The sludge is heated and mixed with water and chemicals to reduce viscosity and prepare it for further separation, improving overall treatment efficiency.
High-G Shale Shaker Module
The first stage of physical separation removes larger solid particles and debris to protect downstream equipment.
Two-Phase Decanter Centrifuge (GNLW554)
Handles separation of fine solids and liquids, reducing TSS (total suspended solids) to manageable levels.
Three-Phase Decanter Centrifuge (GNLWS554)
Performs the crucial task of separating recovered oil, water, and residual solids in a single step, improving oil recovery and reducing disposal volume.
Chemical Dosing System
Ensures optimal demulsification and flocculation for efficient separation. The system is fully automated for precise dosage control.
Steam Generator
Provides thermal energy essential for lowering sludge viscosity and enhancing chemical reaction effectiveness.

Sustainability and Performance Combined
The GNOST-15 system demonstrates a holistic approach to oily waste management:
Oil Recovery: The system achieves a recovered oil quality with BS&W below 3%, enabling the oil to be reused or sold.
Cost Reduction: Recovered oil and water can be reused, significantly reducing the cost of fresh materials and disposal.
Regulatory Compliance: The system ensures that treated effluent and solids meet local environmental discharge standards.
Space-Saving Modular Design: All modules are skid-mounted and containerized, offering easy transport and installation at remote or compact sites.

GN Solids Control – Advancing Environmental Responsibility in Energy Sectors
This successful project reinforces GN’s commitment to supporting clients in Asia and around the world with advanced, practical, and environmentally responsible waste treatment technologies. From oil sludge treatment to solids control, GN continues to offer reliable solutions that improve both economic performance and environmental outcomes.

GN Solids Control has recently completed the delivery of two sets of GNMS-500K Mud Recycling Systems and three GNLW364GT Decanter Centrifuges for an international customer focused on efficient and environmentally conscious drilling operations. This project underlines GN’s commitment to sustainable solids control solutions that not only enhance drilling performance but also reduce environmental impact and operational costs.

A Commitment to Cleaner Drilling Practices
In today’s oilfield and infrastructure development environments, sustainability and compliance with environmental regulations are top priorities. Drilling operations, especially in urban or environmentally sensitive zones, require closed-loop systems that can minimize fluid loss and solid waste discharge. GN’s GNMS-500K system is engineered specifically for this need.
This 500GPM capacity unit features an integrated double-layer shale shaker and desander combination, effectively removing solids from the drilling mud before recirculating the cleaned fluid. By recycling the drilling fluids on-site, contractors significantly reduce their need to purchase and dispose of mud—making operations more cost-effective and eco-friendly.

Supporting Ultra-Fine Separation with GNLW364GT Centrifuges
To further refine the mud treatment process, GN has supplied three GNLW364GT decanter centrifuges, ideal for high-precision solid-liquid separation. These 14-inch bowl centrifuges are capable of removing fine solids down to 2-5 microns, ensuring the drilling fluids maintain the optimal rheological properties required for consistent and safe drilling.
Designed for continuous duty, the GNLW364GT features variable frequency drives (VFDs), tungsten carbide wear protection, and a robust construction suitable for remote or offshore applications. It significantly contributes to reducing mud dilution, which in turn limits chemical usage and disposal volume.

Environmental and Financial Advantages
By integrating GN’s modular systems into their operation, the client will achieve:
Lower drilling fluid consumption through continuous recycling
Decreased environmental footprint via reduced waste discharge
Longer equipment life due to fewer solids in fluid circulation
Cost-effective operations with minimal downtime and maintenance

These benefits align with global drilling trends where sustainability, safety, and efficiency drive decision-making. GN’s equipment is compliant with international standards (API, ISO) and backed by extensive field experience across the Middle East, Asia, and the Americas.

Learn more about GN Solids Control full product portfolio, feel free to contact and explore how we can support your project’s environmental and performance goals.

GN Separation has recently delivered a GNLW364 decanter centrifuge to an environmental services company overseas. This specific model is widely recognized for its effectiveness in sludge dewatering and wastewater treatment applications, particularly in industrial and municipal projects where efficiency and reliability are essential.

Advanced Features for Enhanced Performance

The GNLW364 unit is designed with performance and durability in mind. It is equipped with a 3-frequency conversion control cabinet, allowing independent adjustment of the bowl speed, scroll speed, and feed rate. This level of control ensures optimal separation performance depending on the characteristics of the sludge being processed.

In addition to the flexible VFD control, the unit also comes with temperature and vibration sensors, which are crucial for monitoring operating conditions in real time. These sensors help detect anomalies such as bearing overheating or mechanical imbalance, improving safety and minimizing downtime due to unexpected failures.

Application in Environmental Projects

This model is especially suitable for:

• Sludge dewatering from industrial and municipal wastewater
• Oil sludge treatment
• Environmental remediation projects
• Drilling waste management

By providing efficient solid-liquid separation, the GNLW364 supports environmental companies in reducing waste volume, improving water quality for discharge or reuse, and meeting increasingly strict environmental regulations.

Global Support and Customization

GN Separation provides global after-sales support and offers customized equipment configurations to meet specific requirements. In this project, the centrifuge was adapted to the client’s operational needs, ensuring easy integration into their existing treatment system.

With its proven performance and robust design, the GNLW364 continues to be a trusted choice for international environmental companies looking for effective sludge treatment solutions.

 

GN Solids Control recently completed a customized delivery of solids vacuum pumps for an Africa-based oilfield service company, demonstrating GN’s strong capability to provide application-specific solutions for global clients operating in harsh environments.

The client faced a recurring challenge: how to efficiently transfer drilling waste and oil sludge across long distances in remote oilfields where power supply is limited or hazardous conditions prevail. After technical discussions and a comprehensive analysis of the project environment, GN proposed its air-operated GNSP series vacuum pumps as the ideal solution.

Unlike traditional mechanical or electrical pumps, GN’s solids vacuum pumps are fully pneumatic, requiring only an air source to operate. This makes them ATEX safe, explosion-proof by design, and perfect for Zone 1 and Zone 2 hazardous areas. The pumps are capable of moving viscous, abrasive, or sludge-like materials with up to 80% solids content — a key requirement for the customer’s needs.

The delivery included multiple units of GNSP-20B and GNSP-40B, each engineered with:
High vacuum capability (up to 85Kpa)
Long horizontal transfer distance (up to 1000m)
Max particle size handling up to 75mm
Wear-resistant internal structure for durability

To ensure successful commissioning and long-term reliability, GN provided pre-delivery performance testing, operation manuals, and remote technical support. The project also involved training the customer’s field engineers to operate and maintain the pumps effectively.

This order further solidifies GN’s presence in the African oilfield service sector, where demand for low-maintenance and high-efficiency transfer systems continues to grow. GN has previously delivered full solids control systems, centrifuges, and cuttings dryers to clients in Nigeria, Egypt, Kenya, and Algeria, building long-term trust with its localized support and robust product performance.

As global energy operations shift toward safer and cleaner waste management, GN remains committed to delivering smart, rugged, and compliant solutions tailored to each customer’s operational goals.

For more information about GN Solids Control vacuum pumps and waste transfer solutions, please feel free to contact us anytime!

GN Solids Control has once again proven its strong capabilities in integrated project delivery by completing a full solids control system package for a 2000HP drilling rig, tailored for a long-term partner in the Indian oilfield services sector. This marks another milestone in GN’s expanding presence across South Asia and reflects the growing trust in GN’s engineering and manufacturing strength.

This system was designed to ensure maximum efficiency and reliability for challenging onshore drilling conditions. From fluid recovery to solids separation and mixing, the package is a complete solution. It features a GNZYQ1200A liquid-gas separator that protects the system from hazardous gas influxes, ensuring a safe and steady start to the fluid circulation process.

To handle primary solids separation, three high-G shale shakers (GNZS594K) were deployed, providing consistent performance with adjustable vibration and a large screen area for better cuttings removal. Following the shakers, a GNZCQ360 vacuum degasser removes trapped gases in the mud to stabilize density and improve downstream equipment performance.

A major highlight of the package is the GNZJ594K-2S12N mud cleaner, which combines desander and desilter cyclones over a single shaker deck to achieve fine solids removal. This multifunctional equipment reduces system footprint while improving separation efficiency, an ideal solution for high-end drilling operations.

Supporting this process are nine centrifugal pumps, selected for their interchangeability with Mission models and strong track record in durability. These pumps transfer fluids between equipment while maintaining high flow rates. The system includes ten mud tanks for various stages of the drilling process, designed and fabricated in-house by GN.

To maintain uniform mud properties and prevent solids settling, nineteen mud agitators and seventeen mud guns were installed throughout the tank system. Additionally, two jet mixing hoppers help operators quickly prepare or condition drilling fluids, providing greater flexibility and operational control.

All equipment is powered and monitored via a centralized electrical control system, ensuring safe and efficient operation across the entire rig-up.

By delivering this high-standard solids control system, GN Solids Control continues to strengthen its collaboration with Indian drilling contractors, offering not only premium equipment but also reliable engineering support and after-sales service. GN is proud to be part of the effort to improve drilling efficiency and reduce environmental impact across the region.

For more info on GN’s turnkey solutions, please feel free to contact us anytime.

GN Solids Control has successfully commissioned a fully integrated 1000HP Drilling Rig Mud Tank System for a prominent oilfield operator in Yunnan Province, China. This deployment reinforces GN’s reputation as a trusted partner for turnkey drilling fluids systems that offer not only robust performance but also seamless field operation.

In today’s challenging drilling environments, reliability and integration are key. GN’s engineered system meets this need with a comprehensive setup designed to improve solids control efficiency, reduce non-productive time, and enhance HSE compliance.

Fully Integrated Mud Tank System
The system is composed of four functional mud tanks, each tailored for distinct purposes such as active mud circulation, mixing, and storage. Together, they form the operational backbone of the rig site’s fluid management strategy.

Core Equipment Supplied:
3 × GNZS594K Shale Shakers
Equipped with GN’s patented screen technology and robust dual-motor drive, these shakers provide high G-force linear motion to quickly separate large solids from drilling fluids. Their efficiency is critical to preventing formation damage and reducing wear on downstream equipment.
GNZCQ270 Vacuum Degasser
Removing entrained gases from the mud, this unit safeguards against gas-cut drilling fluid that could destabilize well conditions.
GNZJ752K-2S Desander & GNZJ752K-12N Desilter
This dual-stage hydrocyclone solution offers precise separation of sand and silt-sized particles. The integration with mini shakers underneath ensures dried discharge and continuous operation.
GNLW452D Decanter Centrifuge
Positioned as the final stage of solids removal, this medium-speed centrifuge efficiently handles low-gravity solids and recovers barite, keeping mud weight and rheology in optimal condition.
Auxiliary Equipment
The system also includes mud agitators, centrifugal sand pumps, a mud mixing funnel, and an explosion-proof electrical control system, ensuring safe and efficient fluid recirculation and mixing.

Field-Proven, Operator-Trusted
Designed for 24/7 drilling operations, GN’s equipment is engineered to minimize downtime and maintenance. All components were tested on-site under real drilling conditions by GN’s field engineers, ensuring they met both technical specifications and customer expectations.

This project highlights the value of working with a single integrated supplier. GN Solids Control not only manufactures each component in-house but also provides system design, commissioning, and long-term technical support. This one-stop solution saves time, reduces procurement complexity, and ensures total system compatibility.

GN continues to partner with oilfield service companies and operators around the world to deliver modular, efficient, and reliable mud systems. Whether it’s for onshore, offshore, or remote environments, GN’s solutions are field-tested and backed by a global support network.

Interested in learning more about GN’s drilling fluids systems? Feel free to contact us and explore our product line for a customized proposal.

In response to the increasing demand for efficient and adaptable solids control systems in workover operations, GN Solids Control has successfully provided a fully customized solution to a major oilfield service company in China. This delivery demonstrates GN’s capabilities in designing and manufacturing complete systems tailored to specific rig requirements — in this case, for a 750HP workover rig.

The delivered system comprises a comprehensive set of solids control equipment and support components that ensure continuous fluid processing during rig operations:
Custom Mud Tank System
At the core of the solution is a specially fabricated mud tank with designated compartments for solids removal, mud mixing, and clean fluid storage. Designed to endure tough oilfield conditions, the tank also serves as the structural base for all solids control units and includes full electrical integration.

Dual GNZS594K Shale Shakers
To meet the processing demands of the workover rig, GN supplied two units of its GNZS594K linear motion shale shakers. These are high-capacity shakers equipped with durable composite screens and a high G-force vibration mechanism, ensuring fast removal of coarse solids from drilling fluids.

GNZS594K-2S12NK Mud Cleaner
To enhance separation efficiency, the system integrates a compact mud cleaner that combines 2 desander cones and 12 desilter cones over the same shaker model. This configuration delivers efficient multi-stage separation, crucial for maintaining the quality of re-used mud.

GNLW452D Medium-Speed Decanter Centrifuge
The centrifuge plays a vital role in fine solids removal. GN’s GNLW452D is engineered with precision balancing and VFD control, allowing operators to adjust bowl speed for optimal performance. It efficiently removes silt and fine particles, maintaining the integrity of the drilling fluid system.

Supporting Equipment
The package is rounded out with GN-manufactured centrifugal pumps, mud agitators, mud hoppers, and a complete electrical control unit. These auxiliary systems are essential for consistent mud circulation, chemical mixing, and reliable system control.

GN Solids Control’s engineering team worked closely with the client to ensure every detail — from layout to component sizing — aligned with field needs. By offering both standard modules and fully customized packages, GN reinforces its position as a flexible and responsive solids control equipment provider.

This project reflects GN’s commitment to delivering not just equipment, but solutions — engineered to increase efficiency, reduce downtime, and ensure environmental compliance in oilfield operations.
For more details on GN’s rig-ready systems, please feel free to contact us anytime.