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GN Solids Control is pleased to announce the successful delivery of a Hydrovac Slurry Separation System to a valued client in the United States. Designed with efficiency, sustainability, and reliability in mind, this advanced system is tailored to support hydrovac excavation operations where large volumes of slurry must be treated for reuse and safe disposal.

Hydrovac excavation is widely used across North America for utility daylighting, pipeline installation, and construction projects. These operations generate high volumes of slurry consisting of water, clay, silt, sand, gravel, and sometimes hydrocarbons. Efficient separation is essential to minimize disposal costs, recycle water, and comply with environmental regulations. GN’s Hydrovac Slurry Separation System addresses these challenges through a modular, step-by-step separation process.

System Modules:
Coarse Screening Module
The process begins with a coarse screen that removes oversized particles such as gravel and large debris. This initial step reduces wear on downstream equipment and ensures smooth system operation.

Fine Screening Module
After primary screening, slurry enters the fine screening module, where smaller solids like sand and silt are separated. GN’s fine shaker technology is designed with high G-force performance to achieve maximum solids removal while maintaining continuous slurry flow.

Desander Module
The slurry is then processed through a desander unit equipped with hydrocyclones. This module effectively separates medium-sized particles, typically down to 40 microns, ensuring that the recovered slurry is cleaner and more suitable for recycling.

Large Bowl Decanter Centrifuge Module
Finally, the slurry is treated with a high-capacity GN decanter centrifuge. With its large bowl design, the centrifuge is capable of separating fine solids down to 2–5 microns, delivering clarified water and high dryness in the separated solids. This stage maximizes recovery efficiency and supports environmentally responsible disposal.

Advantages of GN Hydrovac Slurry Separation System
High Efficiency: Multi-stage treatment guarantees optimal recovery of clean water and reduces waste volume.
Environmental Compliance: Enables contractors to meet stringent discharge standards and reduce the environmental footprint of hydrovac excavation.
Cost Savings: Recycling water reduces the demand for fresh water supply, while minimizing slurry hauling and disposal costs.
Robust & Modular Design: Each module is built with durable, wear-resistant materials, and the modular layout ensures flexibility for transport, installation, and expansion.
Proven Reliability: With experience serving clients worldwide, GN equipment is tested for demanding field conditions and offers stable long-term performance.

The deployment of this Hydrovac Slurry Separation System marks another milestone for GN Solids Control in supporting the North American excavation industry. By integrating coarse screening, fine screening, desanding, and centrifuge separation, GN delivers a complete solution that meets the dual goals of operational efficiency and environmental stewardship.
GN Solids Control will continue to work closely with clients worldwide, offering customized separation systems for hydrovac excavation, tunneling, mining, and oilfield applications.
For more information about GN’s slurry separation systems, please feel free to contact us any time.

GN Solids Control is proud to announce the successful delivery of 16 sets of solids control and drilling waste management equipment to an overseas oilfield service company. This package includes both drilling mud decanter centrifuge systems and vertical cuttings dryer systems, tailored to meet the demanding requirements of modern oil and gas drilling operations.

Each decanter centrifuge package is designed for efficient drilling mud processing and includes:
Drilling Mud Decanter Centrifuge – engineered to separate fine solids from drilling fluids, ensuring stable mud properties.
Lifting Stand – provides a safe and optimal working height for continuous operations.
Feeding Pump – ensures consistent and reliable feed flow to the centrifuge.
The centrifuge units will allow the client to maximize drilling fluid recovery, reduce mud costs, and maintain wellbore stability by controlling low-gravity solids content.

Each vertical cuttings dryer package is dedicated to treating drill cuttings and includes:
Vertical Cuttings Dryer – GN’s proven design that delivers high G-force drying performance to minimize the oil content on cuttings (OOC).
Support Stand – heavy-duty structure that guarantees safe and stable installation.
Washing Screw Pump – provides washing fluid to clean the dryer screen for reliable performance.
Discharge Conveyor System – designed to move the dried cuttings efficiently for safe collection and disposal.

The cuttings dryer units are particularly important for offshore and environmentally sensitive drilling areas, where strict regulations require effective waste reduction and oil recovery. By integrating the dryer with centrifuge systems, the customer achieves a complete solution covering both drilling fluids recovery and drilling cuttings management.
This delivery demonstrates GN’s capability to supply comprehensive solids control and waste management packages for international clients. All equipment is manufactured in GN’s API- and ISO-certified facility, using strict quality standards to ensure durability and efficiency in the toughest drilling conditions.

With these 16 sets of equipment, the overseas oilfield service company will benefit from:
Reduced drilling waste disposal costs
Improved drilling fluid recycling
Compliance with environmental regulations
Optimized drilling performance and reduced downtime

As oilfield operations continue to expand globally, GN Solids Control remains a trusted partner for providing complete, customized solids control and waste management solutions. From shale shakers and mud cleaners to decanter centrifuges and cuttings dryers, GN is committed to helping clients achieve both operational efficiency and environmental sustainability.

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.