GN Separation recently completed the delivery of a 14-inch sludge dewatering centrifuge package for a customer in Southeast Asia. The package is designed for wastewater sludge treatment and includes a GN T Series dewatering decanter centrifuge along with the necessary auxiliary systems to achieve efficient solid-liquid separation and sludge volume reduction.
GN T Series Dewatering Decanter Centrifuge
The supplied centrifuge is the GNLW364GT, a 14-inch (360 mm bowl diameter) model from GN’s T Series dewatering decanter centrifuge range. The T Series is specifically engineered for sludge thickening and dewatering applications and is widely used in municipal and industrial wastewater treatment projects.
Compared with standard decanter centrifuges, the GN T Series features an 8.5-degree beach angle, which creates a longer dewatering zone inside the bowl. This design allows solids to remain under centrifugal force for a longer period, resulting in drier discharged solids and improved dewatering performance.
The GNLW364GT centrifuge offers:
- Bowl Diameter: 360 mm (14 inch)
- Bowl Length: 1520 mm
- Maximum Speed: 3964 RPM
- Maximum G-Force: 3200 G
- Bowl L/D Ratio: 4.2
- Main Motor: 22/30/37 kW
- Back Drive Motor: 7.5/11 kW
- Beach Angle: 8.5°
Suitable Applications
GN T Series dewatering centrifuges are suitable for a wide range of sludge and wastewater treatment applications, including:
- Municipal wastewater sludge
- Industrial wastewater treatment
- Oily sludge treatment
- Drilling mud treatment
- Sand washing wastewater
- Mineral processing wastewater
- Tunnel and construction slurry
- River and lake dredging sludge
- Kaolin and calcium carbonate processing
- Chemical industry wastewater
- Printing and dyeing wastewater
- Aquaculture wastewater
- Steel-making wastewater
For materials containing fine particles, chemical conditioning is typically required before centrifugation. Flocculants are added to aggregate fine particles into larger flocs, allowing the centrifuge to achieve more efficient separation and improved cake dryness.
Key Features of GN T Series Dewatering Centrifuge
Optimized 8.5° Beach Angle
The extended cone section provides a larger drying area, enabling better moisture removal from solids and achieving higher dryness levels.
High-Quality Duplex Stainless Steel Construction
The bowl and end caps are manufactured from duplex stainless steel such as SUS2205 or SUS2304 using centrifugal casting technology. This construction provides excellent corrosion resistance and superior mechanical strength compared with conventional stainless steel materials.
Efficient Screw Conveyor Design
The screw flights are formed using CNC spiral blade manufacturing equipment to improve solids conveying efficiency. Depending on the material characteristics, GN can also provide variable-pitch screw designs to enhance cake transport and compression.
Wear Protection
Critical wear areas are protected with highly wear-resistant materials, including:
- Tungsten carbide solid discharge port sleeves
- Replaceable wear-resistant alloy protection tiles
- Optional wear-resistant coatings for demanding applications
These features significantly extend equipment service life when handling abrasive materials.
Advanced Dynamic Balancing
All rotating components undergo multiple dynamic balancing procedures, including medium-speed balancing, operating-speed balancing, and complete machine balancing. This ensures smooth operation and reduced vibration during continuous operation.
Compact and Maintenance-Friendly Design
The main and back drive motors are installed on the same end of the centrifuge, reducing installation space requirements and simplifying maintenance access.
The centrifuge is also equipped with hydraulic bearing removal structures, greatly reducing maintenance effort and minimizing the risk of damage during bearing replacement.
Intelligent Monitoring and Protection
GN centrifuges feature comprehensive monitoring systems capable of tracking:
- Bowl speed
- Bearing temperature
- Machine vibration
- Lubrication system pressure
- Main and back motor current
- Conveyor torque
Automatic alarm and protection functions help ensure safe and reliable operation under varying process conditions.
Complete Dewatering Solution
In addition to the decanter centrifuge, GN can provide complete sludge dewatering packages including:
- Automatic dry powder polymer dosing units (PAM)
- Liquid chemical dosing units (PAC)
- Feed pumps
- Polymer preparation systems
- Electrical control systems
- Containerized dewatering solutions
The combination of a GN Chemical Dosing Unit and a GN T Series Dewatering Decanter Centrifuge enables efficient removal of ultrafine particles that cannot be separated by mechanical methods alone.
Supporting Wastewater Treatment Projects Across Southeast Asia
As industries and municipalities throughout Southeast Asia continue to strengthen environmental protection requirements, the demand for reliable sludge dewatering equipment continues to grow. GN Separation provides customized dewatering solutions tailored to different sludge characteristics and treatment capacities.
The successful delivery of this 14-inch sludge dewatering centrifuge package further demonstrates GN’s capability in providing dependable solid-liquid separation equipment for wastewater treatment, industrial sludge management, and environmental protection projects worldwide.
GN Separation looks forward to supporting more customers in Southeast Asia and other regions with high-performance dewatering centrifuge systems and complete wastewater treatment solutions.