GN Nodig Mud Recycling System

GN Separation is pleased to announce the successful shipment of two complete GNOST-15 oily sludge treatment systems to a valued client in Asia. These systems are designed for the efficient separation and recovery of oil, water, and solids from a variety of oily sludge sources such as refinery waste, tank bottom sludge, and drilling waste.

Integrated Modular Design for High-Volume Sludge Treatment

Each GNOST-15 system is designed to handle up to 15 cubic meters of oily sludge per hour, featuring a comprehensive, hot-wash separation process. The systems are fully skid-mounted, modular, and ready for plug-and-play operation on site. Each set includes the following modules:

1. Feeding Pump Module

Responsible for transferring the oily sludge from the collection site into the treatment process using a vacuum or progressive cavity pump, ensuring continuous and safe delivery.

2. Premixing Tank Module

A heated and agitated tank used to precondition the sludge with water and chemicals. This step helps reduce viscosity and loosens the oil from solids.

3. Coarse Screening Module (Vibrating Screen)

High G-force vibrating screens remove large debris and coarse particles, protecting downstream equipment and improving overall system efficiency.

4. GNLW-554 Two-Phase Decanter Centrifuge Module

Performs solid-liquid separation. The high-speed decanter centrifuge separates the de-oiled solids from the liquid phase, significantly reducing the oil content in the discharged solids.

5. GNLWS-554 Three-Phase Decanter Centrifuge Module

Further separates the remaining liquid into three phases: recoverable oil, clean water, and fine solids, completing the final polishing step of the process.

6. Chemical Dosing Unit

Automatically delivers flocculants, demulsifiers, and pH conditioners to enhance separation efficiency and emulsion breaking.

7. Steam Generator Module

Provides the necessary heat for the entire hot-wash process, helping to reduce viscosity and improve oil recovery rates.

---

Proven Performance in the Field

GNOST-15 is part of GN’s scalable oily sludge treatment family, ranging from 1 m³/h to 15 m³/h. The shipment of two complete units demonstrates growing global trust in GN’s technology for sustainable sludge handling and oil recovery.

With its modular layout and proven mechanical-chemical synergy, this system not only maximizes oil recovery, but also minimizes waste, making it an ideal solution for clients seeking compliance, efficiency, and environmental responsibility.

---

GN Separation is committed to delivering reliable, high-performance separation equipment for global industries. We look forward to supporting more clients in Asia and around the world with tailored sludge treatment solutions.

Interested in a customized oily sludge system? Contact us for technical consultation and project support.

Managing oily sludge has long been a challenge for refineries, drilling sites, and industrial plants due to its complex composition and environmental risks. GN Separation offers a comprehensive Oily Sludge Treatment System designed to address these challenges with efficiency, environmental compliance, and resource recovery in mind.

A Complete Process for Oily Sludge Hot Washing

The GN Oily Sludge Treatment System is engineered to perform the entire oily sludge hot washing process. From sludge extraction to three-phase separation, the system integrates multiple technologies to ensure thorough treatment and maximum recovery. The core steps include:

1. Sludge Extraction
   The process starts with the extraction of oily sludge from pits or tanks using GN’s solid vacuum pump or mechanical excavators.

2. Heating & Conditioning
   The extracted sludge is transferred to a heating and pre-mixing tank, where it is stirred and conditioned. This step facilitates the breakdown of sludge structure, enhancing the effectiveness of the chemical treatment.

3. Coarse Particle Screening
   A high G-force vibrating screen is used to remove large solid particles from the conditioned sludge, preparing it for finer separation stages.

4. Secondary Heating with Chemicals
   The remaining fine sludge undergoes further heating and is treated with chemical agents. This helps to strip oil from solid particles, transferring it into the liquid phase for easier separation.

5. Two-Phase Solid-Liquid Separation
   Using GN’s decanter centrifuge, the sludge is separated into solid and liquid phases. The solids, with an oil content reduced to below 2%, can be further treated by biodegradation, pyrolysis, or incineration.

6. Three-Phase Separation
   The liquid phase is sent to a three-phase disc stack separator, which separates it into recoverable oil, reusable water, and residual solids. This step ensures maximum resource recovery and minimizes waste.

Flexible Models to Meet Diverse Needs

GN offers three standard models of the oily sludge treatment system:

Each system can be customized based on the sludge characteristics and operational needs of the client. GN engineers will analyze sample material and offer tailored configurations to ensure optimal performance.

Core Equipment in the System

GN’s oily sludge treatment solution is built around several high-performance machines, including:

• Solid Vacuum Pump – Efficiently extracts and transfers sludge over long distances.

• High G Vibrating Screen – Separates coarse solids from heated sludge.

• Decanter Centrifuge – Performs high-speed solid-liquid separation with minimal residual oil.

• Three-Phase Disc Separator – Extracts oil, water, and solids with high precision and G-force.

Applications Across Industries

GN’s oily sludge treatment system is widely applied in:

• Oil refineries (e.g., tank bottom sludge)

• Drilling operations (drilling waste treatment)

• Oil tank cleaning

• Industrial oily wastewater treatment

Whether handling refinery waste or tank cleaning sludge, GN’s system delivers reliable results with a focus on environmental safety, operational efficiency, and oil recovery.

Resource Recovery & Environmental Benefits

After treatment:

• Oil is recovered and can be reused or sold.

• Water is recycled for hot washing or cleaning.

• Solid residue has significantly reduced oil content, making it suitable for environmentally safe disposal or further treatment.

GN Separation is proud to announce the successful delivery of five GNLW364-FHD Full Hydraulic Drive Decanter Centrifuges to an overseas starch processing facility. These machines are designed to handle high-viscosity, high-concentration materials such as starch slurry, while also meeting stringent food-grade requirements.

Food-Grade Design for Starch Separation

The GNLW364-FHD model features a polished interior bowl and screw, ensuring hygienic operation and full compliance with food processing standards. This makes it an ideal choice for applications involving sensitive materials like starch, where sanitation and performance are equally critical.

Equipped with Swiss-Made Viscotherm Hydraulic System

Each unit is powered by the Swiss Viscotherm hydraulic drive system, one of the world’s leading technologies in decanter centrifuge control. The system includes:

• Hydraulic differential

• Hydraulic system

• Air cooling system

The hydraulic drive system enables independent and infinitely variable control of both the bowl speed and the differential speed during operation, offering unmatched flexibility and efficiency. It is especially well-suited for high-temperature, heavy-duty environments.

GNLW364-FHD Highlights

• Model: GNLW364-FHD

• Bowl Material: Duplex SS2304/SS2205 (centrifugal casting)

• Screw Material: SS304/SS316

• Screw Protection: Tungsten Carbide Tiles

• Solids Discharge Protection: Tungsten Carbide Inserts

• Bearings: SKF

• Drive System: Full Hydraulic, Viscotherm (Switzerland)

• Electrical Control: PLC Smart Control

• Coating: Cosco & Kansai Zinc Rich Epoxy

• Max Capacity: 45 m³/h (200 GPM)

• Max Bowl Speed: 3400 RPM (2328 G)

• Max Torque: 4163 N·m

• Machine Dimensions: 3000 × 2400 × 1860 mm

• Weight: 3400 kg

Specifications above are for reference only and subject to project-specific configurations.

Commitment to International Quality Standards

At GN Separation, we work closely with world-renowned component suppliers like Viscotherm to ensure our centrifuges meet the highest global standards in both performance and reliability. This project is a reflection of our growing presence in the international food processing sector and our dedication to delivering tailored separation solutions.

If you’re looking for a dependable partner for high-performance centrifuge systems, GN Separation is ready to support your process needs.

GN Separation recently delivered its GNLW364 T Series Dewatering Decanter Centrifuge to an overseas environmental protection company, further expanding its global footprint in industrial and municipal sludge treatment. Known for its efficient performance and robust design, the GNLW364 centrifuge is ideally suited for high-demand dewatering applications across various industries.

Optimized for Dewatering Performance

The GNLW364 model belongs to GN’s T Series, a line of decanter centrifuges specifically engineered for dewatering and thickening purposes. Featuring an optimized beach angle of 8.5 degrees, the T Series is designed to extend the drying zone within the bowl, allowing for higher solid dryness and clearer liquid separation.

This series is widely applied for municipal and industrial wastewater sludge, where efficient dewatering and reduced moisture content are critical. For materials containing fine particles and low viscosity, flocculants are typically added to enhance solid-liquid separation performance before processing through the T Series decanter.

Key Features of the GNLW364 T Series Decanter Centrifuge

• Bowl Diameter: 360 mm

• Bowl Length: 1520 mm

• Max Speed: 3964 RPM

• Max G-force: 3200 G

• Main Motor Power: 22–37 kW

• Backdrive Motor Power: 7.5–11 kW

• Beach Angle: 8.5°

Intelligent and Safe Operation

This unit is equipped with a three-frequency conversion control cabinet — a smart electrical system that allows for independent control of the main motor, backdrive motor, and feed pump. Combined with real-time monitoring sensors for temperature and vibration, the system ensures safe, stable, and efficient operation, even under demanding conditions.

GN also integrates a complete alarm and protection system. If abnormal parameters such as overload, high temperature, or excessive vibration are detected, the machine automatically initiates safety protocols, including switching to plug removal or emergency shutdown procedures.

Durable Materials and High-Quality Construction

To guarantee longevity and performance, the bowl and end caps are made from duplex stainless steel (SUS2205 or SUS2304) via centrifugal casting, which provides superior resistance to corrosion and stress compared to conventional stainless steel grades like SUS304 or SUS316.

The screw conveyor is protected by replaceable tungsten carbide tiles, and the discharge ports are reinforced with wear-resistant tungsten carbide sleeves, significantly extending the service life of these high-wear components.

Compact and Service-Friendly Design

The GNLW364 adopts a compact layout, with both motors positioned at one end of the machine. This design not only saves space but also simplifies maintenance. GN’s decanters are also engineered for easy disassembly, and for larger models, hydraulic bearing removal systems are available to reduce the risk of component damage during maintenance.

Trusted by Global Environmental Companies

The overseas environmental firm selected the GNLW364 after rigorous evaluation due to its high dewatering performance, intelligent control system, and low maintenance requirements. With its reliable performance and energy-efficient operation, the GNLW364 is now playing a key role in helping the company meet strict environmental discharge standards and reduce waste handling costs.

Tailored Solutions from GN Separation

Beyond manufacturing high-quality dewatering decanter centrifuges, GN Separation provides turnkey solutions including material transport, classification, and complete sludge dewatering systems. Whether it’s municipal sludge, oily waste, drilling mud, or chemical wastewater, GN has the technology and experience to deliver custom-engineered solutions for complex separation challenges.

---

GN Separation is proud to support sustainable environmental practices worldwide and looks forward to continued cooperation with global partners.

In the realm of sugar production, particularly within European sugar beet processing facilities, effective wastewater management is paramount. The cleaning process of sugar beets generates substantial volumes of wash water laden with organic matter and fine particulates. Addressing this challenge, GN Separation‘s GNLW764 decanter centrifuges have emerged as a robust solution, optimizing wastewater treatment and enhancing overall operational efficiency.

The Challenge: Managing Sugar Beet Wash Water

Sugar beet processing involves extensive washing to remove soil and impurities, resulting in wastewater rich in suspended solids. Traditional treatment methods often struggle with the high solids content and the need for continuous operation, leading to increased maintenance and operational costs.

The Solution: GN Separation’s GNLW764 Decanter Centrifuges

To tackle these challenges, a European sugar processing facility integrated three units of GN Separation’s GNLW764 decanter centrifuges into their wastewater treatment line. These centrifuges are specifically designed for high-capacity, continuous operation, making them ideal for the demanding conditions of sugar beet processing.

Key Features and Advantages:

• Large Processing Capacity: Each GNLW764 unit features a 30-inch (760 mm) bowl diameter and a bowl length of 131 inches (3328 mm), enabling it to handle substantial volumes of wastewater efficiently. Scribd+6gnseparation.com+6gnseparation.com+6

• High G-Force Separation: Operating at a maximum bowl speed of 2612 RPM, the centrifuge generates up to 2900 G, facilitating the effective separation of fine solids from the liquid phase. gnseparation.com+3gnseparation.com+3GN Separation+3

• Durable Construction: The bowl and screw are constructed from duplex stainless steel (SUS2304/SUS2205), ensuring resistance to corrosion and wear, which is crucial for processing abrasive materials found in sugar beet wash water. gnseparation.com+3GN Separation+3gnseparation.com+3

• Automated Operation: Equipped with a VFD+PLC+HMI control system, the centrifuge allows for precise control over operational parameters, reducing the need for manual intervention and minimizing downtime. gnseparation.com+5gnseparation.com+5GN Separation+5

Impact on Sugar Beet Processing:

The implementation of GN Separation’s GNLW764 decanter centrifuges has significantly improved the efficiency of wastewater treatment in the sugar processing facility. The centrifuges effectively reduce the moisture content of the discharged solids, facilitating easier handling and disposal. Moreover, the clarified water can be recycled back into the process, promoting sustainable water management practices.

Conclusion:

GN Separation’s GNLW764 decanter centrifuges offer a reliable and efficient solution for managing the complex wastewater challenges in sugar beet processing. Their high-capacity design, robust construction, and automated operation make them an invaluable asset for sugar plants aiming to enhance their wastewater treatment processes and achieve greater operational sustainability.

For more information on GN Separation’s range of decanter centrifuges and their applications in the food processing industry, visit GN Separation’s official website.