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Sieve Bend Dewatering Screen - Solid Liquid Separator for Wastewater

A sieve bend dewatering screen, sometimes called a solid-liquid separator or static wedge wire screen, is a non-powered, gravity-fed separation device. Shaped like a curve or parabolic arc, the screen is fitted with wedge wire or V-shaped wire elements that provide precise separation.

As wastewater flows over the curved surface, solids are retained on the screen while the filtered liquid passes through the openings. This simple mechanism offers high throughput with zero energy consumption.


Why Use a Solid-Liquid Separator in Wastewater Treatment?

Solid-liquid separation is a vital step in reducing the biological load, preventing pipe blockage, and protecting downstream equipment such as pumps, centrifuges, and filters.

Industries using sieve bend screens for wastewater include:

Food and beverage processing

Dairy and cheese production

Fish and meat processing plants

Municipal wastewater treatment

Pulp and paper mills

Agricultural runoff management

Chemical and petrochemical facilities



Advantages of Sieve Bend Dewatering Screens

• Energy-Free Operation

These screens operate solely on gravity, eliminating the need for motors or power sources.

• High Efficiency Solid Removal

With slot openings typically ranging from 0.25 to 1 mm, wedge wire screens capture even fine particles.

• Durability and Corrosion Resistance

The sieve bends are constructed from stainless steel wedge wire, which resists chemical corrosion and mechanical wear.

• Minimal Maintenance

The fixed structure has no moving parts, meaning fewer breakdowns and reduced downtime.

• Compact Design

The curved design reduces footprint and integrates easily into new and existing systems.


How It Works: Static Screen Solid-Liquid Separation

The sieve bend screen uses gravity to direct flow across its curved surface. As the liquid moves downward, solids are intercepted by the narrow gaps between the wedge wire elements, while water and other fluids continue through.



Sieve Bend Dewatering Screen Applications Across Industries

1. Food Processing Wastewater:

Food factories utilize sieve bend dewatering screens to remove solids such as pulp, skins, and fibrous materials from rinse water and processing waste.

2. Paper and Pulp Mills:

These screens efficiently separate fiber slurries and prevent solids from entering treatment tanks.

3. Fish and Meat Processing:

Fat, tissue, and bone fragments are easily captured before discharge or further treatment.

4. Agricultural Wastewater:

Gravity-fed solid-liquid separators are ideal for manure management and runoff filtration.

5. Municipal Sewage Plants:

Used as a primary screen, sieve bends reduce organic loads early in the treatment process.



Customization Options Available

• Slot size: Typically between 0.25 mm and 1 mm, depending on application needs.

• Material: Most screens are made from stainless steel (304/316L) for corrosion resistance.

• Width and arc radius: Customized for flow rate and installation space.

• Frame design: Free-standing or mountable, depending on plant layout.


Choosing the Right Dewatering Screen for Your Operation

When selecting a sieve bend separator, consider the following:

Flow rate and solid load

Type and size of solids

Chemical composition of the wastewater

Required level of dryness in the solid discharge

Available installation space


Working with an experienced supplier ensures the system is optimized for performance and longevity.

Contact us

E-mail: sales@uboscreen.com

WhatsApp: 86 13653285589

Article Source: www.filter-screen.com


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