GN Separation has successfully completed factory testing of two GNLW364-VFD decanter centrifuges, which are now en route to an overseas environmental company for use in municipal sludge dewatering projects. 
Decanter Centrifuges: A Modern Solution for Sludge Treatment
Decanter centrifuges play a crucial role in wastewater treatment and sludge management, offering efficient, continuous separation of solids from liquids under high centrifugal forces. Compared to conventional technologies such as belt presses or filter presses, decanter centrifuges reduce labor costs, improve process stability, and minimize footprint.
Key Applications in Sludge Dewatering
- Municipal Wastewater Treatment
GN Separation’s GNLW364 seriesdecanter centrifugeis widely used in municipal plants across the Middle East and Europe. These centrifuges effectively reduce sludge moisture content from roughly 98% to 75–85%, lowering transportation and disposal costs while supporting landfilling, incineration, or resource recovery initiatives. - Industrial Sludge Management
In industries such as petrochemicals, textiles, and food processing, sludge may contain hazardous substances including heavy metals or organics. GN decanter centrifuges are built with duplex stainless steel (SS2205/SS2305) and tungsten carbide-lined components, ensuring long-term reliability in corrosive and abrasive environments.
Advanced Features of GN Separation’s Decanter Centrifuges
- Triple Variable-Frequency Control
Three independent VFDs control the bowl, differential speed, and feed pump, allowing real-time process optimization for varying sludge conditions. - High-Performance Materials
Bowl: Centrifugally cast SS2305 duplex stainless steel provides superior corrosion resistance and extended service life in chloride-rich applications.
Screw Conveyor: 316L stainless steel base with laser-clad tungsten carbide tiles reduces wear and doubles maintenance intervals compared to conventional designs.
- Intelligent Monitoring & Safety
The PLC system with HDMI touchscreen interface monitors vibration, temperature, and torque, while predictive maintenance alerts help prevent unplanned downtime. - Tailored Solutions for Global Clients
GN engineers collaborate closely with customers to optimize performance. A 4:1 bowl length-to-diameter ratio ensures low cake moisture, while explosion-proof options make the system suitable for oil & gas environments.
Global Recognition and Outlook
With these two GNLW364-VFD units now shipping overseas, GN Separation continues to strengthen its reputation as a global provider of innovative, sustainable separation solutions.