Sieve Bend Screen Filter for Wastewater Pretreatment 10-50 m³/h

Product introduction of Sieve Bend Screen Filter

The sieve bend screen filter is a gravity-driven solid liquid separation equipment designed for industrial wastewater and municipal pretreatment systems. It operates without power, using the natural flow of wastewater to pass through a curved stainless steel wedge wire screen.

Wastewater is evenly distributed over the inclined screen surface via an overflow weir. Suspended solids are intercepted on the screen while filtered water passes through the gaps. Solid materials are gradually pushed downward and discharged at the bottom.

Due to its simple structure and high reliability, the static screen filter is widely used for solid-liquid separation, sludge pretreatment, and valuable material recovery in industrial production.

Working principle

The static screen filter works based on gravity flow and physical separation. Wastewater is introduced onto a curved wedge wire screen surface through an overflow distribution system.

As wastewater flows downward:

• Liquid passes through narrow screen gaps
• Suspended solids are intercepted on the surface
• Solid particles gradually slide down due to gravity
• Collected solids are discharged at the bottom outlet
• Filtered water is collected separately for further treatment

This process ensures efficient solid-liquid separation without energy consumption or mechanical movement.

Product Parameter Table

0.5 mm Grid Gap Capacity	10 m³/h
1 mm Grid Gap Capacity	20 m³/h
1.5 mm Grid Gap Capacity	30 m³/h
2 mm Grid Gap Capacity	40 m³/h
2.5 mm Grid Gap Capacity	50 m³/h
Dimension L (mm)	1200
Dimension L1 (mm)	1250
Dimension W (mm)	1590
Dimension W1 (mm)	1360
Dimension H (mm)	1925
DN1 (mm)	150
DN2 (mm)	200
DN3 (mm)	32
DN4 (mm)	25

Main Features

• No power consumption due to gravity-driven operation
• Simple structure with no moving mechanical parts
• High hydraulic efficiency with wedge wire curved screen
• Anti-clogging design ensures stable long-term operation
• Stainless steel body provides high strength and durability
• Large flow capacity suitable for industrial wastewater
• Easy maintenance with simple cleaning process
• High solid removal efficiency reduces downstream load
• Long service life with corrosion-resistant materials
• Suitable for continuous wastewater pretreatment

Sieve Bend Screen Filter vs Rotary Drum Screen

 Conclusion: sieve bend screen is more cost-effective for pretreatment applications.

Sieve Bend Screen Filter vs Static Screen Filter

Application Scenarios

• Industrial wastewater solid liquid separation system
• Municipal sewage pretreatment screening equipment
• Paper mill wastewater fiber recovery system
• Slaughterhouse wastewater solid removal process
• Food processing wastewater treatment system
• Textile and dyeing wastewater filtration system
• Leather industry wastewater pretreatment equipment
• Petrochemical wastewater solid separation system
• River dredging pretreatment screening system
• Industrial resource recovery filtration process

Why Choose sieve bend screen filter

• Zero energy consumption reduces operating cost
• Simple non-powered design ensures high reliability
• Excellent anti-clogging performance improves stability
• Stainless steel structure ensures long service life
• Suitable for high flow industrial wastewater treatment
• Efficient solid recovery improves resource utilization
• Low maintenance requirements reduce operational workload
• Continuous operation without mechanical failure risk

FAQ

1. What is a sieve bend screen filter used for in wastewater pretreatment?

It is used for removing suspended solids and sediment in industrial and municipal wastewater pretreatment systems.

2. How does a sieve bend screen filter work without power?

It uses gravity flow over a curved wedge wire screen to separate solids from wastewater.

3. What is the capacity of a sieve bend screen filter?

The standard capacity range is 10–50 m³/h depending on wastewater conditions.

4. What industries use sieve bend screen filters?

It is used in food, textile, paper, chemical, and municipal wastewater treatment industries.

5. What is the difference between sieve bend screen and rotary drum screen?

Sieve bend screen is static and energy-free, while rotary drum screen uses mechanical rotation.

6. Why is wedge wire used in sieve bend screen filters?

Wedge wire improves hydraulic efficiency and reduces clogging risk.

7. Can sieve bend screen filter reduce treatment load?

Yes, it significantly reduces suspended solids before biological treatment.

8. Is sieve bend screen filter suitable for small wastewater plants?

Yes, it is ideal for small and medium pretreatment systems.

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