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Published: 31 May 2026
GN Separation has recently fulfilled a full equipment delivery for an overseas client, covering high-performance sludge dewatering machines and automatic chemical dosing units. Tailored for industrial sludge treatment projects, the delivered equipment is designed to significantly boost sludge dewatering efficiency, cut overall operational costs, and deliver stable, eco-friendly wastewater and sludge treatment outcomes.

GN Screw Press Sludge Dewatering Machine
The GN screw press sludge dewatering machine is a cost-effective, eco-centric solution for diversified sludge treatment scenarios. It operates on the mature screw extrusion principle to achieve high-precision solid-liquid separation. By leveraging the powerful squeezing force generated by variable screw diameter and pitch, combined with the micro gaps between fixed and moving ring groups, the equipment enables continuous sludge thickening and deep dewatering in a single process.
Outperforming conventional sludge dewatering equipment, the GN screw press features low energy consumption, fully automated operation, stable long-term performance, and simple daily maintenance. Its versatile adaptability allows wide application in municipal sewage treatment, industrial wastewater treatment, oil sludge disposal, food processing, chemical production and other industrial sectors.
The complete GN screw press dewatering system is composed of a full-automatic control cabinet, flocculation conditioning tank, integrated sludge thickening and dewatering unit, and filtrate collection tank. Equipped with advanced intelligent control technology, the system supports automatic flocculant preparation and uninterrupted continuous dewatering operation. The treated filtrate can be either recycled for on-site reuse or discharged compliantly in accordance with project and environmental standards.
Automatic Polymer Chemical Dosing Unit

Matched with the screw press dewatering system, GN’s self-developed au
tomatic chemical dosing unit was also included in this shipment, serving as a core supporting facility for continuous, standardized polymer chemical preparation and dosing. The entire unit adopts stainless steel construction for corrosion resistance and long service life, with an integrated three-chamber structure covering solution preparation, curing and storage stages.
The unit features simple operation and full-process automation. On-site operators only need to add dry powder chemicals to the preparation tank and start the system. The chemical-water mixture first enters the stirring and dissolving chamber for uniform and thorough mixing. It then flows into the curing chamber for sufficient maturation and homogenization, before transferring to the storage chamber. The fully prepared chemical solution can be automatically and accurately delivered to dosing points via supporting dosing pumps.
This intelligent dosing system effectively reduces manual intervention and human error, improves the efficiency and consistency of chemical preparation, and ensures stable and reliable dosing accuracy throughout the sludge dewatering process, optimizing the overall treatment effect.
GN’s Global Capability for Customized Sludge Treatment Solutions
Boasting extensive project experience in global sludge dewatering and solid-liquid separation fields, GN Separation has always adhered to strict quality standards and continuous technological innovation. Backed by reliable equipment performance, professional customized solutions and comprehensive after-sales technical support, GN’s separation equipment has been exported to numerous countries and regions worldwide, winning wide recognition from global clients.
This successful overseas delivery further validates GN Separation’s strong comprehensive strength in delivering one-stop, full-set sludge dewatering solutions for international projects. Moving forward, GN Separation will continue to focus on technological iteration and product upgrading, providing more efficient, energy-saving and reliable separation equipment for global environmental protection and industrial waste and sludge treatment projects.