- Our Equipment
Rotatec In-Channel Rotary Drum Screen
#1 Fine screening, washing and compacting in one equipment.
#2 Drum-in-channel design for high flow in a small footprint.
Improve Process
- Screen, convey and compact in one pass.
- Captures wipes and fibrous waste.
- No separate washpress needed.
Smooth Operation
- One gearmotor drives every zone.
- Continuously renewed screen face.
- Fully enclosed, odor contained.
Cost Savings
- Up to 40% volume and weight reduction.
- One machine to buy, wire and maintain.
- Weekly maintenance is a visual check.
Screen , wash and compact: All-in-one equipment.
- About Product
Description
OPERATING MODE
Rotatec sits directly inside the channel where the incoming flow requires screening. Wastewater enters the rotating drum, and the perforated plate or wedge wire basket retains the solids while the cleaned flow passes through and continues downstream.
Blades and brushes mounted on the shaft continuously lift the captured debris clear of the screen face, and a shafted screw begins conveying the material up the transport tube. Two spray ramps in the screening zone wash the basket as it turns, returning organics to the process.
In the compaction zone at the top of the machine, the screenings are pressed against the compacting strainer, dewatered and reduced in both volume and weight by up to 40%. A third spray ramp cleans the strainer periodically. The dewatered screenings then discharge through the chute, or into a bagging system where odor containment is required.
Rotatec can be run continuously, on a timer program, or on a water level signal.
Three zones, one drive
Screening zone
Rotating basket in perforated plate or wedge wire, cleaned by two spray ramps and nylon brushes that penetrate the full screen depth.
Conveying zone
A single shafted screw carries the screenings up the enclosed transport tube, draining free water back to the channel upstream.
Compaction zone
Screenings are dewatered through the compacting strainer, then discharged via chute or bagging system. One spray ramp keeps the strainer clear.
- Why It Wins
Features & Benefits
One machine, one drive
Screening, conveying, washing, dewatering and compacting are all driven by a single gearmotor. There is no separate washpress to buy, install, wire or maintain, and no transfer point between machines where screenings can be lost or spilled.
High capture on wipes and fibrous waste
The rotating basket presents a continuously renewed screen face rather than a fixed rack. Perforated plate from 1 mm, or wedge wire from 0.5 mm, captures wipes, rags, fibers, hair and grit that pass a conventional bar screen. As the basket blinds, the retained mat itself adds a filtering effect and fines capture rises further.
Fully enclosed — odor and aerosol contained
The screening, conveying and compaction zones are all enclosed. Spray water stays inside the machine and away from operators, and the transport tube is sealed along its full length. Where total odor control is required, a bagging system can be fitted at the discharge chute.
Built for access and low maintenance
Maintenance hoods over the screening and compaction zones open for inspection without removing the drive, discharge head or screw. Brushes are bolted and individually replaceable. Weekly maintenance is a visual check of the screen and spray nozzles; nozzles pull out for cleaning by hand.
Protected as standard
- Torque limiter transducer stops the machine on obstruction before damage occurs.
- Hood safety switch and emergency stops on both the equipment and the panel.
- Forward / reverse manual control of the compacting screw for clearing debris.
- Alarm and fault history on the controller screen for fast troubleshooting.
Performance
Eleven models, RDS 6 through RDS 30. Screen opening from 0.5 mm. Volume reduction up to 40%. Municipal and industrial duty.
Models RDS 6 – RDS 16
| MODEL | RDS 6 | RDS 8 | RDS 10 | RDS 12 | RDS 14 | RDS 16 |
|---|---|---|---|---|---|---|
| Dimensions — inches | ||||||
| A Frame width | 23.6 | 31.5 | 39.4 | 47.2 | 55.1 | 63.0 |
| B Frame height | 23.6 | 31.5 | 39.4 | 47.2 | 55.1 | 63.0 |
| C Drum diameter | 17.6 | 22.8 | 29.9 | 36.6 | 41.3 | 47.2 |
| D Drum length | 59.1 | 59.1 | 59.1 | 59.1 | 59.1 | 59.1 |
| Flow, GPM — wedge wire | ||||||
| 0.5 mm | 335 | 475 | 1,035 | 1,275 | 1,895 | 2,555 |
| 1 mm | 555 | 1,190 | 1,760 | 2,070 | 3,170 | 4,270 |
| 2 mm | 650 | 1,275 | 2,155 | 3,170 | 4,120 | 6,250 |
| Flow, GPM — perforated plate | ||||||
| 3 mm | 745 | 1,430 | 1,760 | 2,420 | 3,920 | 5,285 |
| 6 mm | 1,110 | 3,040 | 4,360 | 5,770 | 8,320 | 13,120 |
| 8 mm | 1,365 | 3,565 | 4,490 | 8,410 | 10,830 | 13,695 |
Models RDS 18 – RDS 30
| MODEL | RDS 18 | RDS 20 | RDS 24 | RDS 26 | RDS 30 |
|---|---|---|---|---|---|
| Dimensions — inches | |||||
| A Frame width | 70.9 | 78.7 | 94.5 | 102.4 | 118.1 |
| B Frame height | 70.9 | 78.7 | 94.5 | 102.4 | 118.1 |
| C Drum diameter | 55.1 | 63.0 | 78.7 | 82.7 | 86.6 |
| D Drum length | 59.1 | 59.1 | 59.1 | 59.1 | 59.1 |
| Flow, GPM — wedge wire | |||||
| 0.5 mm | 3,480 | 4,140 | 6,430 | 8,015 | 9,025 |
| 1 mm | 6,515 | 7,705 | 10,655 | 13,200 | 14,135 |
| 2 mm | 8,100 | 8,850 | 12,240 | 14,575 | 15,495 |
| Flow, GPM — perforated plate | |||||
| 3 mm | 6,825 | 8,220 | 10,785 | 11,930 | 14,100 |
| 6 mm | 15,365 | 19,855 | 24,745 | 31,350 | 35,310 |
| 8 mm | 17,170 | 21,795 | 26,375 | 33,065 | 39,540 |
Footnote to publish under the table: Flow capacities are clean-water values for the drum only and do not allow for blinding. Screen openings are stated in mm as the industry standard for perforation and wedge wire. Final selection is confirmed against channel geometry, screenings load and allowable headloss.
- Technical Guide
Design Guidelines
Frame, basket & transport tube
304 or 316 SS
Conveying screw
Shafted, steel
Compaction zone
Stainless steel
Brushes
Nylon (polyamide)
Screening zone (2 ramps)
26.9 GPM
Compaction zone (1 ramp)
9.5 GPM
Required pressure
70 – 90 PSI
Water connection
3/4" F
Mounting
In-channel
Screen opening
From 0.5 mm
Anchors
3/8" x 3"
Discharge
Chute or bagging
Voltage
Custom to site — 3 phase
Frequency
60 Hz
Control modes
Float / timer / level
Panel
PLC with touch screen
- Variant Types
Options Available
Bagging system
Fitted at the discharge chute where total odor containment is required.
Basket media
Perforated plate from 1 mm or wedge wire from 0.5 mm, selected against the screenings to be captured.
Discharge chute extension
Set to suit container or conveyor height at the discharge point.
- Use Cases
Applications
Headworks — municipal fine screening in channel.
Pump and lift stations.
Septage receiving stations.
Food processing and industrial effluent.
Retrofit into an existing channel where a bar screen plus washpress will not fit.
Food Processing – Winery, CA
Headworks – Woodland, WA
Septage Receiving Station
- Output Fraction
Material caught with Rotatec
High capture on wipes and fibrous waste
Fine screening, washing and compacting in one machine.
Fully enclosed — odor and aerosol contained
Success Stories
Trusted by Municipalities Nationwide
- Expert Support
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