Internally rotary drum screen description
The Internally Fed Rotary Drum Screen utilizes a direct drive system to eliminate the use of belts, chains or sprockets.
A combination of stainless-steel shoes and UHMW polyethylene wear strips replace the use of trunnion wheels reducing labor intensive maintenance.
The screening panels remove easily for regular cleaning and to allow access inside the drum without disassembling the machine.
Screening panels are available in wedge wire, perforated plate and wire mesh in various opening sizes to optimize debris removal.

Internally rotary drum screen function
The internal inlet rotary screen operates with minimal foot traffic.
Influent enters through the inlet and flows into the flow-through slurry tank.
The flow slurry tank fills and the influent forms a waterfall over the weir and touches the sides of the rotating cylindrical screen.
As the inflow hits the rotating screen, the solids are trapped in the cylinder and the liquid passes through the screen into the process or continues for further treatment.
A diverter on the cylinder moves the solids along the length of the screen for discharge.
The unit is equipped with a spray bar for cleaning the screen.
The screen is equipped with a bypass nozzle to prevent filter overflow.

Internally rotary drum screen model

| DIRD Model | Drum size | Physical Dimensions(mm) | Power | Weight (Kg) | Capacities(m³/h) | Sludge height | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| L | W | H | 1mm | 2mm | 3mm | |||||
| IRD6-900 | Ø600×900 | 1900 | 1350 | 1700 | 0.55 | 630 | 15 | 25 | 30 | 500 |
| IRD6-1200 | Ø600×1200 | 2200 | 1350 | 1700 | 0.55 | 820 | 30 | 50 | 60 | 500 |
| IRD6-1500 | Ø600×1500 | 2500 | 1350 | 1700 | 0.75 | 1000 | 45 | 70 | 85 | 500 |
| IRD6-1800 | Ø600×1800 | 2800 | 1350 | 1700 | 0.75 | 1160 | 60 | 100 | 120 | 500 |
| IRD6-2100 | Ø600×2100 | 3100 | 1350 | 1700 | 1.1 | 1300 | 80 | 135 | 170 | 500 |
| IRD9-1200 | Ø900×1200 | 2300 | 1600 | 2200 | 1.1 | 1200 | 40 | 70 | 85 | 600 |
| IRD9-1800 | Ø900×1800 | 2900 | 1600 | 2200 | 1.1 | 1470 | 80 | 135 | 170 | 600 |
| IRD9-2500 | Ø900×2500 | 3600 | 1600 | 2200 | 1.5 | 1800 | 120 | 200 | 250 | 600 |
| IRD9-3000 | Ø900×3000 | 4100 | 1600 | 2200 | 1.5 | 2100 | 160 | 270 | 350 | 600 |
Internally rotary drum screen advantage
Exceptional Filtration Efficiency
They remove even small solids, protecting downstream systems and improving effluent quality.
Low Maintenance Requirements
Our rugged construction and simplified cleaning mechanisms reduce downtime and labor costs.
Multi-Industry Compatibility
You can use them in municipal, food, paper, textile, or agricultural processes.
Space-Saving Design
Their compact form allows easy integration, even in retrofitted facilities.
Smart Automation
Advanced control panels enable hands-free operation and quick monitoring.
Internally rotary drum screen feature
The unique design eliminates the need for trunnion wheels, sprockets and chains, which reduces the wear and tear points and increases the product’s lifespan.
Trouble-free maintenance
All routine maintenance is done at chest level. Removal of the drum is not required to perform maintenance and manual clean in place (CIP).
Designed for duty
Engineered to perform in fine screening applications that have high flows and high solids loading.
Flexible design
Quick change-out screening panels available in various opening sizes, allows for improved debris management.
Low cost of ownership
With few wear parts, a fractional horsepower motor and minimal maintenance required, Duperon equipment is easy to install, own, and operate.
Customizable
The water inlet can be designed on either side of the drum screen, providing options for difficult installation scenarios.

Internally rotary drum screen application
Municipal wastewater treatment plants
Industrial wastewater treatment plants
Sewage Treatment
Tanneries Industry
Laundries Industry
Slaughterhouses
Paper mill Industry
Textile industry
Fish industry
Food & Beverage industry
Chemical industry

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