Exploring the Capabilities of GN Solids Vacuum Pump: Revolutionizing Industrial Waste Management

At GN SEPARATION, we take pride in our new solutions for industrial waste management. One of our flagship products, the GN Solids Vacuum Pump, also known as the sludge vacuum pump, is an innovation in the field of solids transfer. This vacuum loading solids transfer pump is fully powered by compressed air, making it an efficient and reliable solution for transferring solids, powder, slurry, and sludge.

What Makes GN Solids Vacuum Pump Stand Out?

The GN Solids Vacuum Pump is designed to be compact, robust, and incredibly efficient. It utilizes a powerful vacuum of 25″ hg to load materials and is capable of delivering them over distances of up to 500 meters. Available in three different capacities (10 m3/h, 20 m3/h, and 40 m3/h), these pumps can also be customized as Group Pump Units on a single skid, offering versatile and scalable solutions for various industrial needs.

Key Applications

The versatility of the GN Solids Vacuum Pump makes it suitable for a wide range of applications, including:

  • Thickener De-sludge: Efficiently removes sludge from thickeners.
  • Tunneling & TBM Applications: Ideal for tunnel boring machines and excavation projects.
  • Sump and Shaft Cleaning: Cleans sumps and shafts effectively.
  • Tailings and Ash Pond Cleaning: Handles the cleaning of tailings and ash ponds in power stations.
  • Oil Spill Capture and Transfer: Captures and transfers oil spills efficiently.
  • Hazardous Waste Recovery: Safely recovers and transfers hazardous waste.
  • Drilling Mud and Cuttings Transfer: Transfers drilling mud and cuttings in oil and gas operations.
  • Mining Slurries and Offal Transfer: Moves mining slurries and waste materials.
  • Bulk Transfer: Handles bulk transfer operations, both loading and unloading.

Working Principle of the GN Solids Vacuum Pump

The GN Solids Vacuum Pump operates on a simple yet powerful principle. Compressed air is fed into the pump, creating a high vacuum inside the pump tank. This vacuum draws materials into the tank through the suction line. After a few seconds, the valve changes the air direction to create positive pressure, pushing the material out of the pump tank through the discharge line.

The GNSP-40A, a larger model, offers both manual and automatic modes, while the smaller models, GNSP-10A and GNSP-20A, operate automatically. This pneumatic operation ensures safety and reliability, especially in hazardous environments like the oil, gas, and coal industries, where explosion-proof equipment is essential.

GN Vacuum Cleaner for Industrial Waste

In addition to the GN Solids Vacuum Pump, we offer the GN Mini Vacuum Cleaner, designed for tough industrial clean-up jobs. This mobile and lightweight suction tool is air-operated, producing a high vacuum for efficient suction and can switch to positive pressure for discharge. Operators can set up automatic suction and discharge cycles, enhancing efficiency and ease of use.


The GN Solids Vacuum Pump and GN Mini Vacuum Cleaner are at the forefront of industrial waste management technology. Their robust design, efficient operation, and versatility make them invaluable tools for a wide range of applications. At GN SEPARATION, we are committed to providing innovative solutions that meet the evolving needs of our clients.

For more information on our products and how they can benefit your operations, please visit our website or contact our sales team. We look forward to helping you achieve greater efficiency and effectiveness in your waste management processes.

Exploring the Efficiency and Benefits of the Slant Plate Clarifier by GN Separation

At GN Separation, we are dedicated to providing solutions for liquid and solids separation. One of our flagship products, the Slant Plate Clarifier, also known as the inclined plate clarifier, exemplifies our commitment to innovation and efficiency in wastewater treatment.

What is a Slant Plate Clarifier?

The Slant Plate Clarifier is a type of liquid and solids separation equipment. It functions by allowing a mixture of solids and liquid, sometimes pre-flocculated, to enter through a trough into the clarifier. As the mixture flows upward between a series of slant plates, the solids settle onto the plate surfaces and slide down by gravity into a sludge collection hopper. The clarified liquid then flows through orifice holes and exits at the top of the clarifier.

Advantages of the Slant Plate Clarifier

Compared to traditional settling tanks, the Slant Plate Clarifier offers significant advantages:

  • Cost-Effectiveness: The design and operational efficiency of the Slant Plate Clarifier make it a more cost-effective solution.
  • Small Footprint: The slant plates provide a large effective settling area within a compact space, making it ideal for facilities with limited space.
  • Energy Efficiency: It requires less energy to operate compared to decanter centrifuges, contributing to lower operational costs.
  • Ease of Maintenance: With minimal moving parts, the Slant Plate Clarifier is easy to maintain, reducing downtime and maintenance costs.
  • Continuous Operation: Designed for continuous 24/7 operation, it ensures reliability and consistent performance.

Applications of the GN Slant Plate Clarifier

The versatility of the GN Slant Plate Clarifier makes it suitable for a wide range of applications, including:

  • Potable Water Clarification: Ensuring clean and safe drinking water.
  • Industrial Process Water: Treating water used in various industrial processes.
  • Oil and Gas Industry Wastewater Treatment: Handling wastewater generated in oil and gas operations.
  • Sand Filter Backwash Water Treatment: Managing backwash water from sand filters.
  • Metal Finishing Wastewater Treatment: Treating wastewater from metal finishing processes.
  • Mining Industry: Clarifying water used in mining operations.
  • Groundwater Treatment: Treating groundwater to remove contaminants.
  • River Dredging Treatment Plants: Managing water from dredging activities.
  • Other Wastewater Treatment Plants: Versatile enough to be used in various other wastewater treatment facilities.

Why Choose GN Slant Plate Clarifier?

The GN Slant Plate Clarifier stands out due to its:

  • Large Effective Settling Area: Providing superior separation efficiency.
  • Gravity Separation: Utilizing natural gravity forces, leading to lower power consumption.
  • Chemical Dosing Flexibility: Can operate with or without flocculants, offering operational flexibility.
  • Minimal Maintenance: Few moving parts, typically only an auger for sludge transfer, make it easy to maintain.
  • Safe and Easy Operation: Designed for continuous and safe operation, 24 hours a day, 7 days a week.

At GN Separation, our Slant Plate Clarifier represents the forefront of efficient and reliable liquid and solids separation technology. Whether you are in the water treatment, industrial, oil and gas, or mining industry, our clarifier offers a robust solution to meet your needs.

For more information, contact GN Separation today to learn how our Slant Plate Clarifier can benefit your operations.

GN Separation: GNLW364 Sludge Dewatering Centrifuges Used in Overseas Municipal Sludge Dewatering Project


In the realm of wastewater treatment, GN Separation is at the forefront, delivering efficient and reliable solutions for sludge dewatering. Recently, three GNLW364 sludge dewatering centrifuges were deployed in an overseas municipal sludge dewatering project, showcasing their superior performance and versatility. The GN T series decanter centrifuge, renowned for its innovative design and exceptional dewatering capabilities, is the cornerstone of this project.

GN T Series Decanter Centrifuge

The GN T series decanter centrifuge features a beach angle of 8.5 degrees, specifically designed for dewatering and thickening purposes. This design is particularly effective for meeting the stringent dewatering requirements of municipal and industrial wastewater sludge. The T series decanter centrifuge excels in handling materials that require easy separation, such as those with large particle sizes, significant solid-liquid density differences, low viscosity, high concentration, high treatment capacity, and higher dryness than clarity.

Key Features and Advantages

  1. Optimized Beach Angle: The 8.5-degree beach angle extends the drying and dewatering area, enhancing the overall dewatering performance. This results in much drier solid materials being discharged.
  2. Superior Material Construction: The centrifuge’s shaft caps and bowl are made from duplex stainless steel SUS2205 or SUS2304, offering superior performance compared to SUS304 and SUS316. This construction avoids intergranular corrosion and ensures a complete residual stress release.
  3. Efficient Screw Blade Design: The screw blade, formed by CNC spiral blade equipment, provides higher slag conveying efficiency. The gradual change type blade can significantly improve transport and pressing efficiency, resulting in drier solids.
  4. Enhanced Separation Efficiency: The large beach angle and medium pitch, combined with the BD baffle plate, optimize the separation of the dewatering zone from the sedimentation zone. This configuration results in clearer separated liquids and larger processing capacities with reduced energy consumption.
  5. Wear Resistance: The solid discharge port features a wear-resistant tungsten carbide sleeve, ensuring high durability and longevity.
  6. Flexible Liquid Pool Adjustment: The overflow weir plate design allows for easy and flexible adjustment of the liquid pool depth, catering to various material dryness and clarity requirements.
  7. User-Friendly Design: For small models, the collection box cover is supported by a gas spring for safety and ease of access. Larger models feature a labor-saving lid opening device, enabling a single person to lift the lid, reducing labor intensity and facilitating maintenance.
  8. Advanced Bearing System: The main bearings are equipped with a hydraulic disassembly structure, significantly reducing the tension required for bearing removal, thus minimizing the risk of damage.
  9. Precision and Balance: Each centrifuge undergoes high-precision CNC machining and multiple dynamic balance treatments to ensure stable operation at high speeds.
  10. Robust Screw Propeller: The screw propeller, protected by replaceable wear-resistant alloy plates, offers long service life and easy maintenance. Certain models feature an open-type screw blade, enhancing processing capacity.
  11. Compact Motor Arrangement: The two motors are positioned at one end of the centrifuge, saving space and simplifying operation and maintenance while preventing motor damage from material leakage.
  12. Premium Bearings and Lubrication Systems: The centrifuge uses high-end SKF series bearings and can be equipped with an automatic lubrication system to ensure reliable lubrication and extended bearing life.
  13. Comprehensive Monitoring and Alarm System: The centrifuge is equipped with a monitoring system that tracks various operational parameters in real time. It provides automatic protection and alarms in case of abnormalities, ensuring the safety of both personnel and equipment.
  14. Advanced Electric Control Panel: The stainless steel electric control panel is equipped with globally recognized VFD, PLC, HMI, and other components. GN can also provide VFD control panels with explosion-proof certifications.

Applicable Materials

The GN T series dewatering decanter centrifuge is versatile and can handle a wide range of materials, including:

  • Drilling mud
  • Environmental protection sewage
  • Oily sludge
  • Cutting fluid
  • Sand washing water
  • Mineral washing water
  • Various industrial wastewaters (e.g., chemical, printing and dyeing, construction, tunnel, mine)
  • Organic and aquaculture wastewater
  • Municipal and river sludge
  • Water plant and lake sludge
  • Kaolin grading
  • Calcium carbonate, bentonite, silica
  • Titanium dioxide, calcium sulfate, barium sulfate
  • Conductive film glass polishing solution
  • Aluminum hydroxide, cryolite, silicate
  • Oil sand separation, landing oil, oil sludge
  • Coal tar, inorganic fertilizer
  • Chinese medicine extraction (e.g., taxus chinensis, honeysuckle, licorice)
  • Salt crystals clarification, concentration, and dehydration


The deployment of three GNLW364 sludge dewatering centrifuges in the overseas municipal sludge dewatering project underscores the effectiveness and reliability of GN Separation’s T series decanter centrifuges. With their advanced design, superior material construction, and user-friendly features, these centrifuges are well-equipped to handle the demanding requirements of municipal and industrial wastewater treatment, ensuring optimal performance and efficiency.

GN Separation Sells Two Screw Press Units to European Client: Model GNDL402

We are thrilled to announce that GN Separation has successfully sold two units of our screw press sludge dewatering machines, model GNDL402, to a European client. These machines represent the cutting edge of economic and environmentally friendly sludge dewatering technology.

The GN Screw Press: An Overview

The GN screw press sludge dewatering machine is designed to be both cost-effective and environmentally friendly. It utilizes the principle of screw extrusion to achieve solid-liquid separation. This process is driven by the powerful squeezing force generated through the variation in screw diameter and pitch, along with the minute gaps between the floating and fixed rings. This innovative design ensures efficient dewatering by leveraging mechanical principles for superior results.

Key Features of the GN Screw Press

  • Economic and Environmental Benefits: The GN screw press is engineered for minimal environmental impact and operational cost, making it an ideal choice for sustainable operations.
  • Advanced Dewatering Technology: By using screw extrusion, the machine provides robust dewatering through changing screw diameters, screw pitches, and gaps between rings, ensuring effective solid-liquid separation.
  • Automatic Control: Equipped with a fully automatic control cabinet, flocculation modulation box, sludge thickening and dewatering device, and liquid collecting tank, the GN screw press allows for continuous and automatic operation.
  • Versatility: It is suitable for a wide range of sludge dewatering applications, including oily sludge treatment. The machine is designed to operate continuously and automatically without clogging.


  1. Wide Application Range: Suitable for various industries such as municipal sewage treatment, aquaculture, food processing, starch production, oil refining, pharmaceuticals, chemicals, paper production, and leather manufacturing.
  2. Continuous and Automatic Operation: Ensures consistent performance with minimal manual intervention and reduced risk of blockages.
  3. Cost Efficiency: Low investment and operational costs combined with no secondary pollution make it a financially sound choice.
  4. Energy Efficiency: Compact design and small footprint contribute to energy savings and environmental protection.
  5. Enhanced Sludge Treatment: Capable of dewatering sludge under aerobic conditions to prevent phosphorus release from anaerobic sludge dewatering.

Technical Details

The main body of the GN screw press dewatering machine consists of a filtration device composed of fixed and moving rings, with a screw axis running through them. The front section of the machine is dedicated to concentration, while the back section focuses on dewatering. As sludge progresses from the concentration section to the dewatering section, the filtering gap and screw pitch gradually decrease, enhancing the dewatering effect.

The rotating screw shaft not only transports the sludge but also drives the moving ring to clean the filtering gap, preventing clogging and ensuring continuous operation. This design enables effective dewatering by generating high internal pressure as the sludge volume is reduced.

Application and Customization

The GN dewatering screw press can handle sludge concentrations ranging from 2000 mg/L to 50000 mg/L. We offer a comprehensive range of sludge dewatering equipment, allowing clients to select the best solution based on their specific sewage treatment needs and budget. Additionally, GN provides integrated mobile sludge dewatering solutions tailored to customer requirements.

The sale of the GNDL402 screw press units to our European client marks another milestone for GN Separation. We are committed to delivering high-quality, efficient, and sustainable dewatering solutions to clients worldwide. For more information or to discuss how our equipment can meet your needs, please contact us. We look forward to future collaborations and are excited about the possibilities ahead.

Thank you for your interest in GN Separation.

Revolutionizing Material Screening with GN Separation’s Large Flip-Flow Vibrating Screen

At GN Separation, we are committed to providing cutting-edge solutions to meet your material separation needs. One of our standout products is the GN Large Flip-Flow Vibrating Screen, a state-of-the-art piece of equipment designed to handle the most challenging screening tasks with exceptional efficiency and reliability.

Key Features of GN Large Flip-Flow Vibrating Screen

The GN Large Flip-Flow Vibrating Screen is meticulously engineered with the following components:

  • Box Type Exciter
  • Main Vibrating Screen Frame
  • Floating Screen Frame
  • Shear Spring and Damping Spring
  • Flexible Polyurethane Screen Mesh
  • Support and Driving Device

These components work in unison to ensure that the screen operates with a linear running amplitude, providing a robust and efficient screening process.

Advanced Design for Superior Performance

Double Mass Near Resonance Principle

Our Flip-Flow Vibrating Screen leverages the principle of double mass near resonance. This design enables the floating screen frame to achieve large amplitudes, allowing the screen surface to deliver material with an acceleration of up to 50 G. This high acceleration is crucial for effectively screening medium and fine-grained materials, especially those that are wet, sticky, or otherwise difficult to screen.

Technical Features and Advantages

  • Non-Welded Wallboard: The screen machine wallboard is crafted from high-strength alloy steel plate, which offers superior impact toughness. The use of imported Huck rivets for hydraulic tension assembly eliminates residual stress from welding.
  • Optimized Structure: Through finite element analysis, we have optimized the screen’s structure and vibration parameters to avoid natural frequencies and reduce resonance impacts, thereby extending the machine’s service life.
  • Innovative Beam Design: The cross beam under the screen uses a rectangular tube design, while the exciting beam box structure is lightweight, strong, and tough. Post-welding heat treatment of main components effectively eliminates welding stress.
  • Adjustable Amplitude: The amplitude of the floating screen frame can be adjusted by changing the number of shear springs.
  • High-Efficiency Exciter: Our helical gear box type exciter delivers a super large exciting force with ultra-low noise, stable operation, and a long service life. The external arrangement of the eccentric block allows for easy amplitude adjustments by changing the counterweight setting.
  • Convenient Screen Mesh Replacement: The polyurethane screen mesh is installed by pressing, making replacement more convenient. The mesh’s elastic deformation provides self-cleaning functionality, effectively preventing clogging by fine, wet, and viscous materials.

Working Principle of Flip-Flow Vibrating Screen

The Flip-Flow Vibrating Screen operates on the principle of double mass near resonance, where a single drive generates double vibration:

  1. Primary Vibration: The main vibrating screen frame is driven by the exciting force to perform the basic vibration.
  2. Secondary Vibration: The floating screen frame, connected to the main frame via shear springs, performs relative movement in a near-resonance state.

One end of the polyurethane screen mesh is fixed to a fixed beam, while the other end is attached to a floating beam. The relative motion between these beams causes the screen to continuously stretch and relax, delivering high acceleration to the material. This motion ensures that the material is thoroughly loosened and able to pass through the screen, achieving effective separation. The screen mesh’s elastic deformation during this process helps to keep the screen clean by throwing off wet and sticky materials.


The GN Large Flip-Flow Vibrating Screen is an exemplary solution for dry screening of medium and fine-grained materials, as well as for managing wet and sticky substances. Its innovative design and technical advantages make it a reliable and efficient choice for industries looking to improve their material screening processes.

At GN Separation, we are proud to offer this advanced screening technology to meet your most demanding separation challenges. Contact us today to learn more about how our Flip-Flow Vibrating Screen can enhance your operations.