Rotary Drum Screens
Coarse Solids Removal
Coarse Solids Removal in Industrial Wastewater Pretreatment
FRC’s internally fed rotary drum screens remove coarse solids and reduce TSS/FOG to protect downstream processes like DAF or MBR.
FRC’s Rotary Drum Screen Systems provide the first line of defense in wastewater treatment by removing solids and protecting downstream equipment. Engineered for industrial and municipal use, these internally fed screens offer high capture efficiency, durable stainless-steel construction, and automated low-maintenance operation across a wide range of flow rates and applications.
Wastewater flows into a headbox and spreads across the internal surface of a rotating drum screen. Solids are trapped on the screen’s surface while liquid passes through the openings. As the drum rotates slowly, solids tumble, dewater, and are discharged from the bottom. An automatic spray bar periodically cleans the screen without continuous water flow. This slow-speed, internally fed process improves capture rates and protects downstream systems like DAFs and membranes from overload.
Key Features
Internally fed drum design for high solids retention
Slow drum rotation for enhanced solids dewatering
Stainless-steel construction resists corrosion in harsh environments
Flat-welded wedge wire or perforated plate screen media
Automatic cleaning via low-pressure spray system
Fully enclosed design with headbox, splash guards, and base frame
Trunnion-mounted for long-term mechanical stability
Specifications
Flow Capacity: Up to 6,500 GPM (application-dependent)
Screen Openings: 250 – 2,540 microns (0.010” – 0.1”)
Drum Sizes: Up to 80” diameter and 180” length
Screen Media: Wedge wire or perforated plate
Construction: Stainless steel (304, 316, duplex, or duplex)
Standard Features: Enclosed headbox, splash guards, chain drive, trunnion wheels, spray bar
Applications
Food and beverage processing (meat, dairy, produce)
Industrial manufacturing wastewater
Primary screening for municipal systems
Pretreatment before DAF, MBR, or clarifiers
Cooling water and intake protection
Why choose a Rotary Drum Screen?
FRC screens deliver consistent solids removal with reduced water use and lower maintenance. Designed for durability and performance, they extend the life of downstream equipment and improve overall plant reliability—making them a critical component of any high-performance treatment system.
Screens FAQ
Q: What’s the difference between wedge wire and perforated plate screens?
A: Wedge wire offers finer openings and better cleaning for high solids; perforated plate is more robust for coarse screenings.
Q: How are FRC screens cleaned?
A: An automated spray bar removes debris at set intervals, minimizing water use and manual labor.
Q: Can I use these screens before a DAF system?
A: Yes, they are typically installed upstream of DAF units to reduce TSS and FOG loading.
