Industrial Sludge Dewatering
Process and wastewater sludge dewatering, with the filtration cycle matched to the sludge chemistry.
Feed Pumps
Diaphragm feed pumps sized to the press and run duty and standby.
The chambers fill at the rate the cake can accept, and the pressure rises as it builds. The feed pump sets that curve: too small and the cycle stretches, too large and the cloth blinds at the feed port. We match the pump to the press, the slurry and the cycle, and duplicate it where the plant cannot stop.
- Type
- hydraulic diaphragm pump
- Flow
- 2 – 60 m³/h per pump
- Discharge
- up to 1.6 MPa
Product overview
A press is only as even as its feed. The pump has to hold its flow while the pressure rises — which is what a diaphragm pump does and a centrifugal pump does not — and then keep feeding at a controlled rate while the chambers finish filling, so every chamber reaches the same cake thickness.
DELIAN matches the pump to the duty: flow and pressure curve from the press and the cycle, diaphragm and valve material from the solids and the chemistry, drive from the supply on site. Where the plant runs continuously the set is duty and standby, changing over on the level in the feed tank or on the discharge pressure, with the alarm going to the control room.
Key features & options
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Matched to the press
Flow and pressure curve are set from the chamber volume and the cycle rather than from a series.
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Duty and standby
Two pumps, one running: a diaphragm change does not stop the plant.
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Flow held as the pressure rises
The chambers fill evenly from the feed port out, which is what keeps the cake thickness uniform.
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Wear parts in the right material
Diaphragms, valves and seats chosen for the solids, the abrasiveness and the pH.
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Variable speed drive
The feed rate is trimmed to the cycle and the slurry instead of being fixed by the pulley.
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Wear package
Harder valves, seats and liners for abrasive sand and grit slurries.
Technical specifications
Typical range for this class of equipment — the figures for your unit are fixed in the quotation.
| Type | hydraulic diaphragm, single or double acting |
|---|---|
| Flow rate | 2 – 60 m³/h per pump |
| Discharge pressure | up to 1.6 MPa |
| Diaphragm | rubber, EPDM or PTFE-faced, chosen for the slurry |
| Valves | ball or flap, in the wear material the slurry asks for |
| Drive | electric motor; variable speed on request |
| Wetted parts | cast iron, stainless or lined |
| Control | local starter, level or pressure control, or the plant PLC |
| Redundancy | duty and standby set with automatic changeover |
| Supply | on the press skid, or as a standalone unit |
Product images
Related solutions
Construction Sludge Dewatering
Excavation, diaphragm wall and wash-water sludge, reduced to a transportable cake.
Bentonite Slurry Dewatering
Turning spent bentonite suspensions into stackable cake and reusable water.
Frequently asked questions
Because the flow has to hold while the pressure rises. A centrifugal pump loses flow exactly when the cake starts to build, so the cycle stretches and the chambers fill unevenly.
Yes. The feed rate and the pressure curve are matched to the press and the cycle in front of us, and the pump arrives as a skid with its own starter.
From the level in the feed tank or from the discharge pressure, with the alarm in the control room and the changeover recorded in the plant log.
Three-phase power, suction from a slurry tank sized so the pump is never starved, and the discharge manifold to the press.
Tell us about your slurry
Every slurry is different. Send us your slurry characteristics and project requirements so our engineering team can evaluate a suitable dewatering solution.
Feed Pumps
Tell us about your slurry
Every slurry is different. Send us your slurry characteristics and project requirements so our engineering team can evaluate a suitable dewatering solution.
- Process evaluation based on real slurry data
- Equipment and layout proposal for your capacity
- Cake moisture and water recovery targets
- [email protected]
- Phone
- +86 139 0534 1263