Externally rotary fed drum screen description
Externally-fed Rotary Drum Screens are individually designed to meet the client’s needs with regard to headbox configuration, inlets/outlets, height, width, pumped or gravity flow, etc.
All externally fed screens are equipped with overflow bypass provisions, located to suit the client’s needs, eliminating overflow concerns.
All stainless steel construction featuring a fully chassis legs, pans, and other extraneous parts with no hidden add-on costs.
The wedge wire screen with variable slot opening provides solids removal based on client’s specific particle size distribution.
Each system is equipped with an integral sump which can be oversized and/or conformed to meet design and potential upset conditions.
Externally fed screens are equipped with high pressure, CIP able spray manifold systems which can be run automatically or with manual operation.

Externally rotary fed drum screen function
Externally Fed Rotary Drum Screens are equipment that separate floating solid substances in wastewater from water with the help of a screen.
They are used in industrial wastewater treatment plants as well as in domestic wastewater. In external fed rotary drum screens, the waste water taken into the feeding tank is filtered through a slowly rotating drum.
These types screens can be produced in different sizes according to the amount of suspended solid in the wastewater and the flow rate.
The discharge blade in front of the machine removes all the solid substances during the rotation and cleans the drum surface. The drum parts of the externally fed rotary drum screens can be manufactured from “wedge-wire” or perforated metal plates according to the size of the particles in the wastewater.
It can collect the solid particles between 0.25 and 3 mm. These collected screenings are approximately 50% of settleable solids in wastewater. Therefore, it also provides 10-15% BOD removal.

Externally rotary fed drum screen model

| Industry Type | Slot (mm) | RDS03/300 | RDS06/400 | RDS06/700 | RDS06/1000 | RDS06/1300 | RDS06/1600 | RDS08/2000 | RDS08/2500 |
|---|---|---|---|---|---|---|---|---|---|
| Paper Industry | 0.5 | 6 | 20 | 40 | 60 | 80 | 100 | 130 | 190 |
| Slaughter House | 0.5 | 4 | 15 | 30 | 45 | 60 | 75 | 95 | 130 |
| Seafood Industry | 0.75 | 5 | 17 | 35 | 50 | 70 | 90 | 110 | 140 |
| Meat Industry | 0.75 | 6 | 20.5 | 40 | 60 | 80 | 100 | 130 | 190 |
| Meat Industry | 1.0 | 7.5 | 25 | 50 | 75 | 100 | 125 | 150 | 220 |
| Vegetable Industry | 1.0 | 12 | 40 | 75 | 110 | 150 | 180 | 220 | 330 |
Externally rotary fed drum screen advantage
1. Automatic operation with high efficiency.
2. Due to a completely covered system, no odor, and waster splash problem.
3. Low energy consumption.
4. Minimum maintenance and easy clean-up.
5. Compact design.
6. Wide range of capacity.
Externally rotary fed drum screen feature
1. Slot width: 0.25 ~ 3 mm.
2. Alternative screen types and sizes.
3. Alternative voltage and frequency.
4. Alternative degree of motor protection.
5. Control pane.
Externally rotary fed drum screen application
Sewage treatment plants
Vegetable, fruit processing industry
Sugar industry
Meat and poultry processing
Fish and shellfish processing industry
Brewing, malting and beverage industry
Horticulture industry
Industrial process water
Textile industry & laundries
Paper and pulp industry
Exhaust gas cleaning
Waste recycling industry
Bioenergy industry
Drinking water plants

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