GN Separation has recently arranged the shipment of a sludge dewatering Screw Press package for a client in South America. The supplied system is designed for sludge thickening and dewatering applications in wastewater treatment processes, supporting the client’s efforts to improve sludge management efficiency and overall operational performance.
The supplied package primarily consists of a GN Screw Press (Model GNDL202) and a Chemical Dosing Unit (Model GNZJY1000), forming an integrated sludge dewatering solution. In response to project requirements, GN Separation provided system-level process design, equipment manufacturing, and factory inspection prior to shipment. This approach demonstrates GN’s capability to deliver complete sludge dewatering systems rather than individual standalone machines.
The GN Screw Press sludge dewatering machine is recognized as an economical and environmentally friendly solution and is widely applied in both municipal and industrial wastewater treatment projects. The equipment operates based on the principle of screw extrusion dewatering. During operation, sludge is gradually conveyed forward by the screw shaft, while variations in screw diameter and pitch generate progressively increasing internal pressure. In combination with the narrow gaps formed between the fixed rings and floating rings, this structure enables continuous solid–liquid separation at relatively low rotational speeds.
Compared with traditional high-speed dewatering equipment, Screw Press technology is particularly suitable for applications where stable operation, low noise levels, and simplified maintenance are key considerations. The design allows sludge thickening and dewatering to be carried out in a continuous process, making the equipment well suited for long-term operation under fluctuating sludge conditions.
The GNDL202 Screw Press supplied for this project integrates both sludge thickening and dewatering functions within a compact footprint. Its enclosed structure helps minimize odor dispersion and supports cleaner working conditions. In addition, the equipment configuration can be adjusted according to specific sludge characteristics, enabling operators to optimize performance during actual plant operation.
To ensure effective flocculation, the system is equipped with the GNZJY1000 chemical dosing unit, which is used for polymer preparation, maturation, and dosing. Proper flocculation is a critical step in sludge dewatering, as it directly affects separation efficiency and cake properties. The dosing unit is designed to deliver stable polymer concentration and consistent dosing output, supporting reliable process control and operational flexibility.
From a system integration perspective, the GN sludge dewatering screw press package includes a fully automatic control cabinet, flocculation modulation unit, sludge thickening and dewatering module, and filtrate collection tank. Through automatic control technology, the system enables continuous and coordinated operation of flocculation, sludge thickening, and extrusion dewatering. The separated filtrate can be collected and either returned to the treatment process or discharged in accordance with site-specific requirements.
This project highlights GN Separation’s comprehensive capabilities in sludge dewatering system design and manufacturing. By integrating mechanical equipment, control systems, and process engineering considerations, GN delivers practical and reliable solutions tailored to customer applications. Prior to delivery, the complete system underwent factory inspection to verify equipment condition, assembly quality, and system integration.
The shipment to South America reflects GN Separation’s ongoing expansion in international markets, where demand for efficient sludge treatment solutions continues to grow. Typical applications for such systems include municipal wastewater treatment plants, food and beverage processing facilities, and other industrial sectors generating biological or mixed sludge.
Looking ahead, GN Separation will continue to focus on system integration, product optimization, and technical support for global clients. Through close collaboration with customers and partners, GN remains committed to advancing its sludge dewatering solutions to meet diverse project requirements across different regions.