Rotary Drum Thickener
PEWE DeWater® RDT
The DeWater® RDT internally fed rotary drum sludge thickener units are used to condense municipal sludge by extraction of free water. The unit is used to thicken both primary and secondary sludges commonly found in municipal wastewater treatment plants. The rotary drum sludge thickener can also be used on industrial sludge applications.
The DeWater® RDT Series Rotary Drum Thickener will maximize thickened sludge removal in an easy to maintain unit. The screen material is a barrier by which material larger than the gap or slot size may not pass, allowing the water to continue through while thickening the output sludge.
DeWater® RDT Design
The internal design utilizes a cylindrical perforated drum with filter cloth for separating coarse suspended solids from the water. The screen may be ordered with several options including custom polymer blend system and PEWE Command Control® RX panel
DeWater® RDT Operation
The RDT influent stream is fed to the screen interior drum surface via an engineered headbox after the incoming sludge has been conditioned with a polymer in the supplied flocculation tank. Clarified effluent then flows through the screen openings and out of the drum through the drainage pan through the flanged outlet. Thickened sludge is then discharged from the interior through a solids discharge chute where it can be directed into a sludge collection tank.
Thickener Screens — High Flow, High Solids
- BAKERY
- BREWERY
- FRUIT
- FOOD PROCESS
- MEAT
- MINERAL
- MUNICIPAL
- PETROCHEM
- POULTRY
- PULP & PAPER
- SEAFOOD
- VEGETABLE
- WINERY
- WASTEWATER
| Application | Municipal | English | Flow Capacity |
Metric | ||||
|---|---|---|---|---|---|---|---|---|
| Model | Lengh inches |
mm | Diameter inches |
mm | GPM | Dry Lbs/hr |
LPM | Dry Kg/hr |
| This chart to be used as a guide only. Consult your PEWE representative. | ||||||||
| RDT-75.3 | 48 | 1219 | 36 | 914 | 75 | 275 | 284 | 125 |
| RDT-100.3 | 72 | 1905 | 36 | 914 | 100 | 435 | 378 | 197 |
| RDT-150.3 | 96 | 2438 | 36 | 914 | 150 | 635 | 568 | 288 |
| RDT-200.4 | 72 | 1905 | 48 | 1219 | 200 | 705 | 757 | 320 |
| RDT-250.4 | 96 | 2438 | 48 | 1219 | 250 | 935 | 946 | 424 |
| RDT-300.4 | 120 | 3048 | 48 | 1219 | 300 | 1155 | 1135 | 524 |
| RDT-350.5 | 96 | 2438 | 60 | 1524 | 350 | 1305 | 1325 | 592 |
| RDT-450.5 | 120 | 3048 | 60 | 1524 | 450 | 1605 | 1703 | 728 |
| RDT-550.4 | 144 | 3658 | 60 | 1524 | 550 | 1905 | 2081 | 864 |
