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Biogas Digestate Screw Press Separator

Published: 2026-09-27 Views: 0 Comments: 0 Source: SHEWUYOU Products Team Request a Quote
Product Showcase Content
Product Name Biogas Digestate Screw Press Separator
Product Image
biogas digestate screw press separator product reference
Illustrative separator image: Vogelsang. Final supplied configuration may differ.
Product Overview The Biogas Digestate Screw Press Separator mechanically divides pumpable fermentation residue into a liquid stream and a compressed solid fraction. It can be positioned after an anaerobic digester or at a digestate storage and treatment station. Separate handling of the two fractions gives commercial livestock farms and biogas operators more flexibility when planning storage, transport, further treatment, and nutrient application.
Key Features
  • Combines screening with mechanical compression to separate liquid from fibrous digestate solids.
  • Provides dedicated liquid and solids discharge points for downstream handling.
  • Screen and pressing arrangement can be selected to suit the digestate and desired separation result.
  • Accessible wear components support planned cleaning and maintenance.
  • Can be integrated with feed pumps, buffer tanks, controls, and solids conveyors according to the project layout.
Structural Components A typical separator includes a feed inlet, screen basket, rotating press screw, drive unit, liquid collection chamber, pressing zone, and solids outlet. Depending on the selected machine, a cone, flap, or other back-pressure device provides resistance at the solids discharge. A support frame, feed pump, buffer tank, pipework, and control cabinet may be supplied as part of a complete installation.
Working Principle A pump feeds digestate into the separator. The screw conveys retained fibers and solids along the screen while free liquid passes through the openings into a collection outlet. At the discharge end, resistance compresses the solids and releases additional liquid. The separated solids leave the press for collection, while the liquid is routed to storage or further processing. Performance varies with feed consistency, screen selection, flow rate, and pressing force.
Technical Specifications
  • Feed material: Pumpable biogas digestate, fermentation residue, or compatible livestock slurry.
  • Throughput: According to project requirements and feed characteristics.
  • Screen opening: Customizable for the required liquid and solids separation.
  • Screw and wetted-part materials: Available upon request for the selected design.
  • Drive and electrical supply: Specified for the required duty and local power supply.
  • Solids dry matter: Dependent on the feed and operating settings; confirm through project assessment or material trials.
Applications Digestate treatment at farm-based biogas plants; separation of fermented pig or cattle manure; preparation of liquid digestate for storage or further treatment; and production of a solid fraction for approved composting, drying, transport, or land application. The intended use of each fraction should follow the project's nutrient management plan and local requirements.
Customization Options Screen selection, pressing arrangement, feed and discharge connections, support platform, controls, and auxiliary pumps can be coordinated with the biogas plant design. Please provide the expected daily volume, feed dry matter, fiber content, operating schedule, liquid destination, and solids handling method. Outdoor protection can be designed according to local climate and farm conditions.
Installation & Maintenance Install the unit on an engineered foundation or platform with adequate access to the drive, screen, and solids outlet. Coordinate feed pumping, overflow protection, liquid drainage, and solids collection during livestock facility or pig farm construction. Where the unit is housed in a steel structure building, verify floor or platform loads and provide service clearance. Inspect the screen, screw, pressing parts, and seals regularly; isolate power and feed before cleaning or maintenance.
Product FAQ

Can it separate both digestate and raw manure?
Potentially, but each feed has different fiber and solids characteristics. Screen and pressing settings should be selected for the actual material.

Is a specific solids dryness guaranteed?
The result depends on feed composition, screen opening, throughput, and pressing resistance. Material testing is recommended when a target is critical.

What supporting equipment is normally required?
A typical system uses a feed pump, suitable pipework, controls, a liquid collection route, and a designated solids collection area.
Product Gallery
digestate screw press separator equipment reference biogas plant digestate separation installation reference screw press digestate separation process reference
Illustrative reference images: Stallkamp and Biogastechnik Süd. Final equipment and installation details depend on the project.

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