The single screw press relies on progressive volumetric compression. As slurry enters the dewatering chamber, the changing screw pitch and tapered inner shaft exert high mechanical pressure on the liquid-solid mix. Water escapes through dynamic and static filter screens while dry cake exits the discharging end.
By pairing Dewatering Screw Press Systems with highly efficient MVR or Falling Film Evaporators, processing plants can treat complex, highly concentrated waste streams. The solid residue is mechanically extracted, and the liquid filtrate is evaporated to recycle pure condensate.
In modern industrial applications, post-separation drying is completed using Tube Bundle Dryers or Flash Airflow Dryers. These solutions recycle steam heat to optimize overall thermal consumption, leading to a massive reduction in total carbon footprint and operating expenditures.
In response to global strictures on industrial wastewater discharges and carbon neutrality goals, the technical development of screw press filtration technology is rapidly evolving. We are shifting from simple filtration to intelligent, closed-loop processing ecosystems. Key advancements include:
Looking to the future, AI-driven sensor arrays will track moisture levels in the discharging dry cake and automatically regulate chemical dosing systems upstream, optimizing sludge preparation for maximum water yield.
Established in 1992, Zongheng is a premier Chinese manufacturer specializing in advanced industrial concentration, evaporation plants, starch industry separation, and Category III medium & low-pressure vessels.
By managing the entire production flow within our 54,000-square-meter facility, we maintain absolute control over supply timelines and materials. From raw material sourcing to mechanical finishing, every step complies with international codes. Our production workshop houses state-of-the-art sheet rolling, CNC machining, automated plasma welding, and non-destructive testing (NDT) rooms. This robust in-house capability guarantees that our equipment functions reliably under harsh industrial environments.
Today, the company operates across over 54,000 square meters of facilities, employing 3 senior engineers, 20+ specialized technical engineers, and a total staff of 120 skilled personnel delivering advanced custom plant solutions globally.
Achieved international quality system certification (Certificate No.: 45021), establishing a complete quality assurance system aligned with modern global industrial frameworks.
Authorized to use the prestigious ASME "U" Stamp, signaling compliance with international pressure vessel codes and opening access to global projects.
Obtained the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42) for pressurized industrial plants.
Officially recognized as a High-Tech Enterprise of Jiangsu Province for our continuous research in thermal processes and separation designs.
Secured ISO9001 quality management standard compliance, ensuring all process steps conform to standardized operating parameters.
Established as Yixing Yangxi Light Industry Machinery Factory, beginning our journey in industrial fabrication and concentration design.
Industrial equipment procurement involves substantial long-term risk. Overseas buyers need more than just machinery; they require reliable support and robust compliance assurance. Here is how we address these concerns:
Our solutions support food fermentation, alcohol, pharmaceutical, chemical, starch processing, and DDGS (Distiller's Dried Grains with Solubles) facilities. We customize each dewatering screw press and evaporation loop to match the specific chemical properties of your process slurry.
We supply products carrying CE certifications and ASME stamps. Our designs comply with regional safety norms, pressure directives, and environmental guidelines, ensuring smooth installation and quick permitting.
We work with international logistics providers to coordinate containerized or bulk sea freight. Furthermore, our field engineers travel internationally to supervise installation, carry out plant commissioning, and train your operations team.
A dewatering screw press is a mechanical separation device that utilizes a slow-moving, variable-pitch screw inside a cylindrical screen. As the slurry moves through the chamber, the spacing decreases and the pressure increases, forcing liquid out through the screen mesh while discharging a compacted dry solid cake at the outlet.
A falling film evaporator distributes the feed liquid evenly inside vertical heating tubes, creating a thin, gravity-driven film that flows downward. Heat applied from the shell side evaporates the liquid rapidly. The low liquid inventory and short contact time protect sensitive materials from thermal degradation.
Forced circulation is preferred for liquids that contain solids, are highly viscous, or are prone to crystallization and scaling. A high-flow recirculation pump moves the liquid through the heat exchanger under pressure, preventing boiling inside the tubes and minimizing scale deposition.
Mechanical Vapor Recompression (MVR) plants use a centrifugal compressor or blower to recompress waste vapor. This compression increases the vapor's temperature and pressure, allowing it to serve as the heating medium for the same system. This design lowers fresh steam usage and cuts energy costs.
Connect with our design engineers to configure custom single screw presses, falling film evaporators, or complete recovery plants tailored to your feedstock requirements.
Zongheng