GN 22 Inch Decanter Centrifuge for Africa Tank Bottom Oily Sludge Treatment

GN Separation has fully completed the manufacturing and factory acceptance testing of the GNLW554-VFD decanter centrifuge, which is slated for delivery to an African oil and gas client. Tailored for tank bottom oily sludge treatment, this advanced separation equipment will enable the customer to recover usable crude oil, cut waste discharge volume and enhance overall environmental compliance for on-site operations.
20260710 Oily sludge separation centrifuge

High-Performance Oily Sludge Separation Solution

The GNLW554-VFD is a core model of GN Separation’s 22-inch decanter centrifuge series, engineered for uninterrupted industrial solid-liquid separation. It delivers consistent, high-efficiency performance for rigorous processing scenarios, including oily sludge remediation, refinery waste treatment, drilling waste management and industrial wastewater purification.
Equipped with a variable frequency drive (VFD) system, the centrifuge features flexible and adjustable operational parameters. On-site operators can precisely regulate the bowl rotating speed and differential speed based on real-time feed sludge conditions, ensuring optimal separation results and stable long-term operation for diverse and complex sludge materials.
20260710 VFD control cabinet

Optimized Working Principle for Tank Bottom Sludge Treatment

In standard tank bottom oily sludge treatment workflows, the decanter centrifuge is deployed as a core processing unit after sludge pre-treatment procedures such as dilution, heating and chemical conditioning. When pre-treated sludge enters the high-speed rotating bowl, powerful centrifugal force rapidly separates solid sediments from liquid phases.
The built-in screw conveyor continuously conveys separated solid impurities to the discharge outlet, while the purified liquid is discharged independently for subsequent oil recycling and further refinement. Adopting a fully continuous operating mode, the equipment maintains stable separation efficiency even when handling high-viscosity, complex oily sludge with fluctuating properties.

Core Advantages of Decanter Centrifuge Sludge Treatment Technology

Decanter centrifuge separation technology stands out in oily sludge remediation for its dual benefits of resource recovery and waste reduction. It effectively separates crude oil from solid sediments and water phases, maximizing the recovery of reusable oil resources. Meanwhile, it drastically reduces the volume of hazardous oily sludge, lowering subsequent transportation and harmless disposal costs, and minimizing the environmental footprint of oilfield waste.
Thanks to these prominent strengths, GN decanter centrifuges have become essential core equipment for modern oily sludge treatment systems, widely adopted by global oil producers and professional environmental service providers.

Customized Full-Set Sludge Treatment Solutions by GN Separation

Leveraging decades of professional experience in solid-liquid separation technology, GN Separation provides one-stop, turnkey solutions for oily sludge treatment. The complete system covers pre-treatment modules, chemical dosing units, two-phase decanter centrifuges, three-phase separation centrifuges, material transfer pumps and integrated modular processing systems.
Our professional engineering team can design and configure customized process schemes according to clients’ specific sludge properties, on-site working conditions and project treatment targets, ensuring tailored and efficient waste remediation solutions.

Market Expansion in Africa & Global Service Commitment

The upcoming shipment of the GNLW554-VFD decanter centrifuge marks another milestone in GN Separation’s layout of the African market. It further validates the company’s reliable equipment quality and professional service capabilities in the global oil and gas industry.
Moving forward, GN Separation will continue to iterate and upgrade high-efficiency, high-reliability separation technologies and equipment. We remain committed to helping global clients optimize operational efficiency, maximize resource utilization, and meet increasingly stringent international environmental protection standards.

GN Smart Control Launches Full Range of Explosion-Proof & Industrial Intelligent Control Solutions to Empower Global Industrial Separation Projects

Hebei, China – July 1, 2026 – GN Smart Control Technology Co., Ltd. (official website: https://www.gnsmartcontrol.com) has officially launched its full-spectrum product portfolio, encompassing explosion-proof electric control cabinets, standard industrial control cabinets, and fully integrated intelligent control system solutions. The company delivers custom-engineered automation control products that meet international certification standards, serving global clients across the oil & gas, mining, tunnel engineering, wastewater treatment, infrastructure construction and other key industrial sectors.

2026.07.01 GN Smart Control Office

GN Smart Control Headquarters

Built upon the robust industrial foundation of GN Separation, the company inherits decades of rich on-site project experience in solid-liquid separation machinery. Its core technical team has long provided dedicated support for GN Separation’s projects deployed in more than 70 countries and regions worldwide, with specialized expertise in the R&D, manufacturing and delivery of electric control systems, industrial automation platforms, and complete intelligent slurry pump control units. All control products are designed for full seamless compatibility with GN Separation equipment, enabling the company to deliver integrated turnkey industrial solutions to end users across the globe.

Explosion-Proof Electric Control Division

2026.07.01 Ex Electrical Control

The company’s offerings are structured into three core product categories: the explosion-proof electric control series, general-purpose industrial control cabinets, and integrated intelligent control systems. The explosion-proof cabinet line holds a complete set of authoritative global explosion-proof certifications including CNEX, ATEX and IECEx, covering explosion-proof PLC control cabinets, frequency conversion cabinets, soft starter boxes, explosion-proof junction boxes and more. These products fully satisfy the strictest safety requirements for flammable and explosive working conditions such as oil & gas drilling, underground mining and petrochemical operations. For general industrial scenarios, the standardized PLC control cabinets, motor starter cabinets and power distribution boxes ensure the stable automated operation of wastewater treatment facilities and tunnel construction machinery.

2026.07.01 Industrial Electrical Control

Beyond individual cabinet units, GN Smart Control also provides turnkey intelligent packaged systems, including PLC automation systems, SCADA remote monitoring platforms, centralized power distribution units and integrated motor control systems, to realize full-process digital monitoring of production lines.

Supported by the group’s 80,000-square-meter modern intelligent manufacturing park, the company implements rigorous full-process quality inspection protocols and maintains highly flexible, fast-delivery capabilities. Its global service network is fully interconnected with GN Separation’s worldwide layout, with self-operated subsidiaries equipped with local warehouses and after-sales teams established in the United States, Australia and the UAE in the Middle East, alongside authorized service partners in more than 10 countries and regions. This structure ensures that overseas customers can access timely localized technical support as well as on-site equipment installation and commissioning services.

Industrial Electric Control Division

What sets GN Smart Control apart from ordinary electrical control manufacturers is its one-stop customized service capability. Its engineering team develops tailor-made control solutions based on each client’s specific project parameters, covering the entire value chain from conceptual design, production and manufacturing to on-site commissioning and long-term after-sales maintenance. By integrating the two major business segments of separation equipment manufacturing and intelligent control R&D, the company fills a long-standing market gap for dedicated supporting control systems for global industrial solid-liquid separation production lines.

2026.07.01 Smart Control Solutions

A senior executive at GN Smart Control commented: “The original intention of establishing GN Smart Control was to complete the supporting industrial chain for GN Separation. We deeply integrate mature separation equipment technology, safety-compliant electrical control products and intelligent remote monitoring systems, to help global customers improve equipment operation safety, reduce energy consumption and enhance overall project operational efficiency. Looking ahead, we will continue to upgrade our explosion-proof and intelligent control product lines, to deliver more reliable and cost-effective automation solutions for diverse industrial separation working conditions.”

Intelligent Control Solution Center

Moving forward, GN Smart Control will increase R&D investment in digitalized and cloud-connected control systems, to further achieve full compatibility between its control products and GN’s full range of equipment, including vibrating screens, decanter centrifuges and sludge treatment systems. The company will also continue to expand its global business footprint to serve more industrial customers worldwide.

GNLW554 Dewatering Centrifuge Package for Overseas WWTP

GN Separation recently completed the delivery of a GNLW554 Sludge Dewatering Centrifuge Package for an overseas wastewater treatment plant.

The package consists of a GNLW554 Decanter Centrifuge and an Automatic Chemical Dosing Unit, providing an integrated solution for sludge conditioning and dewatering.

In this project, the sludge is first conditioned by the GN Chemical Dosing Unit. The system automatically prepares and doses polymer solution according to the operating requirements, ensuring stable flocculation and consistent treatment performance. After conditioning, the sludge enters the GNLW554 Decanter Centrifuge, where high centrifugal force continuously separates the solids from the liquid phase. The process produces dewatered sludge cake with reduced moisture content while discharging clarified centrate for subsequent treatment.

 

Polymer Dosing Unit The GNLW554 Decanter Centrifuge is designed for continuous operation in wastewater treatment plants.

20260625 Polymer Dosing Unit

Its optimized bowl and screw conveyor design ensures reliable separation efficiency, while wear-resistant protection on key components helps extend service life under demanding operating conditions.

Together with the automatic polymer dosing system, the complete package provides stable operation, reduced chemical consumption, and lower overall operating costs. This dewatering package is suitable for municipal wastewater treatment plants as well as various industrial wastewater applications, including food processing, chemical manufacturing, mining, and other industries where efficient sludge dewatering is required. The integrated design simplifies installation and operation while providing customers with a reliable and highly automated sludge treatment solution.

With extensive experience in solid-liquid separation technology, GN Separation continues to provide efficient sludge dewatering solutions for customers worldwide. The successful delivery of this GNLW554 Dewatering Centrifuge Package further demonstrates GN’s capability to supply reliable equipment for modern wastewater treatment projects. GN remains committed to helping customers improve dewatering efficiency, reduce sludge disposal costs, and achieve more sustainable wastewater treatment operations.

Understanding the Key Mechanical Design Parameters of Decanter Centrifuges

Decanter centrifuges are widely used for solid-liquid separation in industries such as wastewater treatment, oil and gas, mining, food processing, and chemical manufacturing. While operating parameters such as bowl speed and differential speed can be adjusted during operation, several critical mechanical factors are fixed during equipment design and manufacturing. These structural parameters have a direct impact on separation efficiency, solids dryness, throughput capacity, and overall machine performance. Continue reading →

GNLS3661 Large Linear Vibrating Screen Delivered for Domestic Mining Company

GN Separation has recently completed the manufacturing and delivery of a GNLS3661 Large Linear Vibrating Screen for a domestic mining company. The unit will be deployed in the client’s mineral processing operation, supporting efficient material classification and consistent production output.A Core Component in Mineral Processing

Linear vibrating screens are essential across mineral processing systems — serving critical functions in screening, classification, dewatering, desliming, and tailings management. Leveraging deep expertise in solids control and separation technologies, GN Separation has delivered screening solutions to clients spanning mining, coal preparation, aggregates, building materials, and chemical processing.

Built for Demanding Applications

The GNLS3661 is engineered for high-capacity, reliable operation in tough industrial environments. Its primary components include a box-type vibration exciter, screen box, vibration damping springs, support structure, and driving device. In operation, the exciter produces a stable linear motion that moves material evenly across the screen surface, enabling precise particle-size separation.

Flexible by Design

The GNLS3661 can be installed horizontally or at an incline, depending on site layout and process requirements. The screen surface is configurable as either single-deck or double-deck, giving operators flexibility to match different material characteristics and processing goals — all while maintaining stable performance under variable workloads.

Proven Across Industries

This equipment is widely used in wet classification, dewatering, desliming, and tailings dry discharge applications. It also serves mineral processing plants, coal preparation facilities, sand and aggregate production lines, and various building material and chemical industry projects. Its robust construction and dependable vibration performance support continuous operation with reduced maintenance demands.

Quality-Driven Delivery

For this project, GN engineers collaborated closely with the customer throughout the design and manufacturing phases, ensuring the final configuration met the specific demands of the application. Every production stage — from material selection and fabrication through final assembly and factory testing — followed strict quality control protocols. This ensures each unit delivered by GN meets the performance and reliability standards customers expect.

Supporting the Future of Mining

202618 Large Linear vibrating Screen

As mining operations push toward higher productivity and better resource recovery, screening efficiency has become a decisive factor. The GNLS3661 delivers stable operation, high screening efficiency, and long service life — helping customers strengthen process performance and lower operating costs.

20260618 Large Size Mining Vibrating Screen 2GN Separation remains dedicated to advancing separation and screening technologies globally. By combining engineering expertise with hands-on industry experience, the company continues to provide customized equipment and complete process solutions that keep pace with the evolving needs of the mining and mineral processing sectors.

20260618 Large linear vibrating screen 1

Large Linear Vibrating Screen Delivered to Boost Efficiency in Mining Operation

GN Separation has announced the successful completion and delivery of a GNLS3661 Large Linear Vibrating Screen to a mining company in China. Now arriving at the customer’s mineral processing site and set for imminent commissioning, this project underscores GN’s growing capability in high-capacity wet screening technologies and its commitment to enhancing classification accuracy and operational stability for mining clients. Continue reading →

GN High Frequency Mining Vibrating Screen for Client in North America

GN Separation has successfully completed the production and shipment of a High Frequency Mining Vibrating Screen to a client in North America, reinforcing the company’s expanding footprint in the global mining sector.

2026.06.12 High Frequency Vibrating Screen Single Deck

Engineered for Fine Particle Performance

High frequency vibrating screens play a critical role in mineral processing — handling fine particle classification, dewatering, and material recovery. GN’s unit is purpose-built to outperform conventional screening equipment, delivering higher throughput with lower energy consumption and reduced maintenance demands.

The delivered screen features a compact, rugged structure optimized for continuous operation in harsh mining environments. Its high-frequency vibration system and refined deck design effectively separate fine particles while minimizing blinding and maximizing capacity — enabling operators to improve product quality and overall processing efficiency.

Why the Client Chose GN

The North American customer required equipment capable of processing fine mineral slurry with consistent output and minimal downtime. After a thorough supplier evaluation, GN was selected for its proven manufacturing standards, advanced engineering, and comprehensive technical support.

Key design advantages include:

Feature Benefit
High-quality materials & precision fabrication Stable operation, extended service life
Modular screen panels Quick replacement, simplified maintenance
Customizable configuration Adapts to varying capacities, particle sizes & applications
Rigorous QC & testing before shipment Reliable performance, full spec compliance

Beyond Vibrating Screens

2026.06.12 Fine Vibrating Screen

GN’s product portfolio spans decanter centrifuges, dewatering systems, slurry separation equipment, coarse screens, and complete process solutions. By integrating multiple technologies, GN helps customers optimize recovery rates, cut waste disposal costs, and strengthen environmental performance.

The equipment serves diverse mineral applications — iron ore, copper, gold, lithium, and industrial minerals — with solutions tailored to each project’s specific requirements.

Looking Ahead

This successful delivery underscores the growing international recognition of GN’s separation technologies. Backed by continuous R&D investment and a global service network, GN remains committed to delivering efficient, reliable, and cost-effective equipment that drives productivity while supporting sustainable mining practices worldwide.

GN 14 Inch Sludge Dewatering Centrifuge Package for Southeast Asia Client

GN Separation has completed the manufacture and delivery of a 14-inch sludge dewatering centrifuge package for a client in Southeast Asia. The project underscores GN’s proven capability in delivering integrated solid-liquid separation solutions for both municipal and industrial wastewater treatment.

2026.06.03 Sludge dewatering centrifuge 14 inch

Meeting Tighter Environmental Standards

Across Southeast Asia, increasingly strict discharge regulations are driving wastewater treatment facilities to adopt more efficient and reliable technologies — particularly for handling complex sludge conditions. Removing fine and ultrafine suspended solids has emerged as a critical challenge in achieving stable effluent quality while keeping treatment costs under control.

Integrated Solution: Centrifuge + Chemical Dosing

GN supplied a complete sludge dewatering system built around a 14-inch high-speed decanter centrifuge, paired with a 1,000L polymer dosing unit. The design integrates chemical conditioning with centrifugal separation to treat difficult wastewater streams more effectively.

Conventional mechanical separation typically handles particles in the 2–5 micron range. By injecting polymer into the sludge stream, the dosing unit promotes aggregation of fine and ultrafine particles into larger flocs. These flocs are then efficiently captured under high centrifugal force inside the decanter — significantly boosting solid-liquid separation performance.

Key Benefits for the Customer

Benefit Detail
Finer particle removal Polymer-enhanced flocculation captures particles below the conventional 2–5 micron threshold
Lower sludge moisture Drier discharged cake reduces transport and disposal costs
Operational stability Integrated skid-mounted design simplifies installation into existing systems
Regulatory compliance Improved effluent quality supports stricter discharge standards

Compact, Skid-Mounted, Ready to Deploy

The 14-inch decanter centrifuge targets small to medium-capacity sludge treatment applications, balancing separation efficiency, reliability, and energy consumption. Its compact skid-mounted configuration allows straightforward installation and easy integration with existing treatment infrastructure — making it suitable across a broad range of industrial settings.

2026.06.03 Polymer dosing unit 1000L

Quality Assured Before Shipment

Prior to dispatch, the complete package underwent rigorous quality inspection and performance testing at GN’s manufacturing facility. Every component was verified against project specifications to ensure reliable commissioning and stable long-term operation at the customer site.

Strengthening GN’s Southeast Asia Presence

This successful delivery reinforces GN Separation’s growing footprint in the Southeast Asian market and demonstrates the company’s ability to provide tailored, integrated sludge dewatering systems that improve treatment efficiency, reduce operating costs, and support sustainable environmental performance.