A rotary drum screen (also known as a drum screen filter) is a self-cleaning filtration system consisting of a rotating cylindrical drum made from wedge wire or perforated stainless steel. As liquids flow through the rotating drum, solid particles are trapped on the screen surface while the filtered fluid passes through.

The wedge wire rotary screen is continuously cleaned using high-pressure sprays or internal brushes, making it ideal for unattended, continuous-duty applications.

How Does a Rotary Drum Screen Work?
Here’s a simple breakdown of the process:
Influent liquid containing solid particles enters the drum screen.
The drum rotates slowly, allowing water to pass through while retaining solids.
Captured solids remain on the screen surface.
A backwash spray system or mechanical wiper automatically cleans the drum.
Solids are removed and discharged, while clean water exits the unit.

This highly efficient separation method is widely preferred for its low maintenance and high throughput capabilities.

What Is A Rotary Drum Screen Used for?
Rotary drum screens are essential in industries where solids-liquid separation is required. Here are the key areas where they’re commonly used:
1. Wastewater Treatment Plants
Rotary drum screens for wastewater treatment are used in municipal and industrial facilities to remove coarse solids like rags, grits, plastics, and sludge from sewage.
Improves the performance of downstream treatment systems
Reduces solids loading on secondary clarifiers and digesters

2. Food & Beverage Processing
In food processing plants, rotary drum screens separate organic solids (like pulp, skins, or meat scraps) from process water, aiding in product recovery and water recycling.
Used in fruit and vegetable washing, meat processing, and dairy effluent
Reduces environmental discharge and improves hygiene standards

3. Paper and Pulp Industry
Rotary drum screens are used to recover fibers and remove debris in paper mills, improving resource efficiency.
Protects pumps and equipment
Recovers valuable cellulose fibers

4. Sludge Dewatering & Thickening
These rotary screens are effective pre-treatment devices for sludge thickening, reducing water content before drying or further dewatering.
Minimizes sludge disposal costs
Enhances the performance of filter presses or centrifuges

5. Aquaculture and Fish Processing
Rotary drum screens are used to remove organic waste, bones, and scales in fish processing facilities and aquaculture farms, ensuring cleaner water and improved fish health.

Why Choose a Rotary Drum Screen?
The rotary drum screen is known for its durability, efficiency, and low operational cost.
• Self-Cleaning Mechanism, Perfect for 24/7 operations.
• High Solid Load Capacity
• Customization Options, Available in stainless steel, wedge wire, and tailored sizes to match application needs.
• Energy-Efficient Operation

Types of Rotary Drum Screens Available
You can choose from several configurations based on your processing requirements:
Wedge Wire Rotary Drum Screen
Perforated Stainless Steel Drum Screen
Inclined Rotary Drum Screens
Horizontal Drum Screens
Self-Cleaning Continuous Drum Screens

Customization includes drum diameter, screen opening size, material type, and discharge options.

Rotary Drum Screen Buying Guide: What to Look For
When selecting a rotary drum screen, keep the following factors in mind:
• Type of solids and flow rate
• Screen opening (mesh size)
• Material of construction (e.g., 304 or 316L stainless steel)
• Cleaning method (spray bar vs. brush)
• Required footprint and installation configuration

For expert consultation and reliable rotary drum screen systems, get in touch with us today.
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Frequently Asked Questions
Q: How often should a rotary drum screen be cleaned?
A: Most rotary drum screens are self-cleaning. Manual cleaning is minimal and only needed during scheduled maintenance.

Q: Can rotary drum screens handle high solids?
A: Yes. They are specifically designed for high solids loading and continuous operation.

Q: Is customization available?
A: Absolutely. You can customize screen size, material, drum length, and opening mesh to fit your process needs.