GN Separation has recently completed the delivery of a sludge dewatering package for an overseas customer. The package consists of one GNDL302 Sludge Dewatering Screw Press and one GNSJY2000 Automatic Chemical Dosing Unit, providing a compact and efficient solution for sludge thickening, flocculation, and dewatering.

GNDL302 Sludge Dewatering Screw Press
The GNDL302 screw press is suitable for municipal and industrial sludge dewatering applications. It adopts a low-speed screw shaft and a moving-fixed ring filtration structure, enabling continuous dewatering with low energy consumption and reduced wear.
Key features include:
- Continuous automatic operation with minimal operator attention
- Low rotational speed for energy savings and quiet operation
- Self-cleaning filtration rings to reduce clogging
- Stable performance for sludge with varying concentrations
- Compact footprint for easy installation and maintenance
- Stainless steel wetted parts for long service life and corrosion resistance
The screw press produces dewatered sludge cake while returning the separated filtrate to the wastewater treatment process, helping customers reduce sludge handling and transportation costs.
GNSJY2000 Automatic Chemical Dosing Unit
To achieve efficient flocculation before dewatering, the package includes the GNSJY2000 Automatic Chemical Dosing Unit. The system automatically prepares and ages polymer solution before continuously supplying it to the screw press.

Main advantages include:
- Automatic three-stage polymer preparation process
- Accurate and stable dosing performance
- Continuous operation with minimal manual handling
- PLC-based automatic control
- Compact skid-mounted design
- Suitable for a wide range of polymer types
Proper polymer preparation significantly improves sludge floc formation, resulting in better dewatering efficiency and drier sludge cake.
Integrated Sludge Dewatering Solution
The combination of the GNDL302 Screw Press and GNSJY2000 Chemical Dosing Unit provides customers with a complete sludge dewatering solution. The integrated system offers:
- Reduced sludge volume and disposal costs
- Stable and continuous operation
- Low energy and water consumption
- Easy operation and maintenance
- High reliability for long-term industrial use
GN Separation supplies complete sludge dewatering systems for municipal wastewater, food processing, chemical plants, paper mills, textile factories, and many other industrial applications. Each system can be customized according to sludge characteristics, treatment capacity, and customer requirements.
With extensive experience in solid-liquid separation equipment, GN Separation continues to provide reliable, high-performance dewatering solutions to customers worldwide.



