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Define the Complete Sludge Dewatering Duty
A sludge dewatering unit combines a specified separation duty with the connections and supporting equipment needed at the site. The core equipment described on this page is a horizontal decanter centrifuge with continuous feeding and scroll discharge.
Specify the required cake handling and separated-liquid quality alongside the sludge flow. This description concerns solid-liquid sludge separation. An oil-bearing feed requiring two separate liquid outlets needs a dedicated three-phase configuration assessment.
How the Decanter Separates Sludge
Inside the rotating bowl, denser suspended solids settle toward the bowl wall. The scroll rotates at a differential speed and transports the settled solids to discharge. Separated liquid leaves through its own outlet. Feed characteristics, conditioning and operating settings determine the achieved result.
Specify What the Unit Must Include
- Feed transfer: define pumps, pipework, flow control and any pretreatment.
- Conditioning: establish whether polymer preparation and dosing are needed.
- Separation: select the centrifuge and its materials, drive and wear protection.
- Discharge handling: plan cake collection or conveyance and the liquid return route.
- Utilities and controls: confirm power, service water, instruments and site interfaces.
These items define the scope to discuss; they are not a statement that every accessory is included in a standard machine price. For conditioning equipment, see the automatic flocculant dosing system.
LW500 Reference Package Information
The original page identifies LW500*2000 with a 500 mm bowl, 45 kW main motor, 15 kW auxiliary motor, 380 V/50 Hz supply, reference capacity of 5–30 m³/h, weight of 5050 kg and dimensions of 4700 × 1270 × 1440 mm. Confirm whether these refer to the complete package or the individual machine.
Speed confirmation required: the original listed rotation speed and G-force are inconsistent. Neither should be used to set operating limits without the manufacturer's confirmed datasheet for the supplied unit.
Other Listed Decanter Models
| Model number | LW355*1460 | LW450*1800 | LW520*2080 |
| Diameter(mm) |
355 | 450 | 520 |
| Lenght(mm) | 1460 | 1800 | 2080 |
| Max speed | 3600 | 2800 | 3000 |
| L/Dratio | 4 | 4 | 4 |
| G:force | 2576 | 1976 | 2620 |
| Capacity(m3/h) | 2-10 | 4-25 | 5-40 |
| Main motor power(kw) | 15 | 37 | 45 |
| Weight(kg) | 1800 | 2500 | 5345 |
| Dimension(mm) | 2750*1350*830 | 3320*1700*1130 | 4605*1475*1170 |
The existing table is reference information originally described as internal test data. Confirm all specifications for the selected package. Capacity depends on sludge composition, solids loading and the required cake and liquid quality.
Project Data for Selection
Provide sludge source, normal and peak volume, dry solids concentration, temperature, pH and any abrasive or corrosive components. Include operating hours, existing conditioning, required cake consistency and the planned route for both outlets. Site drawings help define access and maintenance requirements.
For a specific smaller model comparison, see the LW355 sludge dewatering centrifuge. If deployment across multiple sites is needed, review the mobile dewatering system.
Frequently Asked Questions
Is this a complete turnkey unit?
The supply boundary must be agreed in the quotation. Identify which pumps, dosing equipment, conveyors, controls and installation services are included.
What cake solids can be guaranteed?
A guarantee requires a defined feed and operating duty. Assess representative sludge and agree test conditions before setting a target.
Is this automatically a three-phase separator?
No. The sludge process described here has a solids discharge and one liquid stream. Confirm a separate configuration if the feed requires oil-water-solids separation.
What happens to the separated liquid?
Route it according to the treatment design and measured quality. Mechanical dewatering alone does not make the liquid suitable for direct discharge.
Request a Dewatering Unit Proposal
Send SENZ your sludge analysis and site requirements to define the equipment scope and verify the model data.
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