GN Separation has successfully completed the manufacturing, assembly and factory inspection of a full-set sludge dewatering integrated package tailored for a European client. Composed of a GNDL303 screw press sludge dewatering machine and a GNSJY3000 chemical dosing system, the complete equipment package has passed all production and quality tests and is fully ready for delivery to the client’s overseas project site. Adopting a highly integrated design, the solution delivers compact layout, full automation and stable operational reliability, supporting continuous sludge conditioning, thickening and dewatering for wastewater treatment processes.

The GNDL303 sludge dewatering screw press is a cost-effective, eco-friendly mechanical dewatering solution applicable to diverse types of sludge in municipal and industrial wastewater treatment. It adopts advanced screw extrusion technology to realize uninterrupted solid-liquid separation. During formal operation, the rotating screw propels sludge forward continuously. Along with the gradual change of internal cavity geometry, the sludge is subjected to progressive compression. The synergistic effect of increasing extrusion pressure and precise gaps between fixed and floating ring plates enables efficient water separation from sludge mass while fully intercepting solid particles. This innovative working principle realizes one-stop continuous sludge thickening and dewatering with minimal operational complexity.

To optimize dewatering efficiency, sludge is conditioned with polymeric flocculants before entering the screw press, which promotes dense and stable floc formation and facilitates internal water release from sludge structures. To match the overall operational requirements of the project, GN Separation equips this turnkey package with the self-developed GNSJY3000 chemical dosing unit, ensuring accurate, stable and automatic preparation and dosing of sludge conditioning agents.

The GNSJY3000 dry powder chemical dosing system is a specialized automatic unit for polymer solution proportioning, maturation and storage. The entire equipment body is made of premium stainless steel for corrosion resistance and long service life, with a modular structural design that independently completes chemical proportioning, stirring, maturation and storage. In operation, dry polymer powder and water are accurately proportioned and fully mixed in the preparation module, followed by sufficient stirring to form a uniform preliminary solution. The solution is then transferred to the maturation zone for full curing to ensure stable flocculation activity. After maturation, the qualified polymer solution is stored in the dedicated tank and continuously and quantitatively delivered to the sludge conditioning unit via dosing pumps, maintaining consistent chemical concentration and stable sludge conditioning performance throughout the operation.

The integrated combination of GNDL303 screw press and GNSJY3000 dosing system forms a complete and systematic sludge dewatering solution. Equipped with a mature PLC automatic control system, the entire production process realizes intelligent management of core operating procedures, greatly reducing manual intervention, lowering labor costs and simplifying daily operation and equipment maintenance. Meanwhile, the compact integrated package design effectively saves floor space, simplifies cross-border transportation and on-site construction procedures. On-site installation only requires basic water, power and sludge pipeline connections, significantly improving project implementation efficiency.

Energy-saving and low-wear operation is another core advantage of the system. Different from traditional high-speed centrifugal dewatering equipment, the screw press runs at a low and stable rotation speed, which effectively cuts down overall energy consumption and reduces mechanical friction and wear, extending equipment service life while maintaining efficient and stable dewatering results. The separated filtrate can be recycled to the front-end wastewater treatment process or discharged up to standard, while the dewatered sludge with low moisture content can be continuously discharged for subsequent transportation, harmless disposal or resource utilization.

With all manufacturing processes and strict factory inspections fully completed, the integrated sludge dewatering package has entered the final shipment preparation stage for European delivery. GN Separation will provide full-process professional technical support for on-site installation, commissioning and trial operation to guarantee stable and standardized equipment operation for the client’s project.

This overseas project once again verifies GN Separation’s strong R&D and manufacturing capabilities in customized integrated sludge treatment solutions. The turnkey package integrates mechanical dewatering, automatic chemical dosing and intelligent control technology, featuring compact structure, high efficiency and strong practicability. Relying on continuous technological iteration of solid-liquid separation equipment and rich international project delivery experience, GN Separation keeps dedicating to providing global clients with efficient, reliable and cost-effective sludge dewatering and management solutions for municipal sewage treatment, industrial wastewater treatment and various sludge disposal scenarios.