Efficient manure processing is essential for sustainable waste management in livestock farms. Which is better for manure dewatering, screw press separator vs slope screen separator? Tianzhong Machinery is an experienced manure separator supplier. In this article, we will explore the features of both machines and determine the superior choice for animal waste disposal. Please keep reading for more details!

Screw Press Separator

The screw press manure separator comprises essential components such as the extrusion auger, stainless steel screen, screw, reducer, motor, discharge device, pumps, pipelines, and control cabinet. Screw dewatering process begins by pumping the material into the machine. The screw press gradually pushes and extrudes the manure, while the manure is filtered and dewatered through the screen. Under continuous extrusion, the solid material is pushed out of the discharge outlet. And the liquid is discharged through the wastewater outlet. The dewatered manure can be sold directly or used for organic fertilizer production; while the liquid can be transported to a biogas digester, effectively converting waste into a valuable resource.

Slope Screen Separator

The slope screen separator utilizes a combination of a vibration system, a feeding and extrusion system, and a self-cleaning system to treat wastewater and solid waste from livestock and poultry farms. It is capable of separating animal manure, wastewater, biogas slurry, etc. The raw manure is pumped and evenly distributed over the sloped screen. Then the vibrating screen filters out water and solid particles. Under the effect of gravity, the solid waste moves toward the lower end of the screen. The waste then enters the screw filter for secondary filtration, after which the spiral auger pushes it into a cylindrical screen for further dewatering. Finally, the remaining moisture is compressed and drained through the outlet, while the solid materials are discharged from the front outlet.

Screw Press Separator VS Slope Screen Separator

The main difference between the screw press separator and the slope screen separator lies in their filtration and extrusion processes. The former focuses on extrusion dehydration without filtering, whereas the latter filters first and then performs extrusion dehydration. However, slope screen separator is suitable for dehydrating livestock and poultry manure, feces and biogas residue, as well as low-concentration sewage, requiring the moisture content to be above 90%. On the other hand, the screw press separator is designed for solid-liquid separation of sludge, manure, and other materials with high solid content and low water content.

Which Is Better for Manure Dewatering?

The choice between a screw press separator and a slope screen separator for manure dewatering depends on the specific characteristics of the manure and the intended application.

1. Screw Press Separator

– Better for materials with high solid content and low water content;
– Generally known for high efficiency in dewatering;
– Efficient for dewatering poultry manure; pig manure and cow dung, etc.
– The water content of dewatered manure is around 60%.
– May require more maintenance due to the moving parts such as the rotating screw. Regular inspection and cleaning are essential.

2. Slope Screen Separator

– Better for materials with low-solid content and high water content;
– Efficient for dewatering water-soaked manure, water-flushed manure, wastewater treatment, slurry, etc.
– The water content of dewatered cake is about 80%.
– This separator is fully made with stainless steel and equipped with vibrating screen, which makes it easy to clean and maintain.

Considerations

If your animal manure has high solid content and low water content, the screw press separator is more efficient. Besides, it will achieve a lower water content in the dewatered manure. While if your material has low-solid content and high water content, the slope screen separator may be better suited. But the water content in the dewatered cake is higher (about 80%). The choice depends on the specific characteristics of the manure you are dealing with and the desired water content of dewater solid. Moreover, you can also use these two machines in the same project to get a lower liquid content. Welcome to contact us for more details!

Conclusion

In summary, the choice for manure dewatering depends on the specific properties of the manure and the expected water content of dewatered cakes. If you are dealing with pig manure/ cow dung or chicken manure with low moisture content, the screw press separator may be the superior choice. On the other hand, if you are handling waste with high moisture content and lower solid content, such as in wastewater treatment systems or large-scale pig farms, the slope screen separator might be more suitable. It’s essential to consider the characteristics of the manure and your specific requirements before selecting the appropriate dewatering machine. Welcome to talk with us about your project and we will help you find a suitable solution.