Bentonite Slurry Dewatering
Turning spent bentonite suspensions into stackable cake and reusable water.
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Slurry & separation technology
Engineered Slurry Dewatering
For tunneling, microtunneling and industrial sludge.
From slurry to reusable water & transportable cake
Each stage is selected around the slurry, the geology and the disposal route. Open a stage to see what it contributes to the process.
- 01Raw slurrySlurry arrives from the TBM, microtunneling or pipe jacking separation circuit, or from a sludge holding tank.
- 02ScreeningCoarse solids, stones and debris are removed so downstream separation equipment is protected.
- 03DesandingHydrocyclones and sand screws remove the sand fraction and stabilise the slurry before conditioning.
- 04Slurry conditioningFlocculant dosing and mixing condition the fines so that the filter press can form a firm, releasable cake.
- 05Filter pressChamber or membrane filter presses dewater the conditioned slurry at high pressure.
- 06Filtrate and water recoveryClear filtrate is recovered for reuse in the slurry circuit or discharged to the site water system.
- Filter cakeDewatered cake is stacked, transported and disposed of at a fraction of the original slurry volume.
Solutions by application
Start from the slurry your project produces. Each application page explains typical slurry characteristics, the recommended treatment process and the equipment configuration.
Construction Sludge Dewatering
Excavation, diaphragm wall and wash-water sludge, reduced to a transportable cake.
Industrial Sludge Dewatering
Process and wastewater sludge dewatering, with the filtration cycle matched to the sludge chemistry.
Our core dewatering technologies
Chamber, membrane and automatic filter presses are the core of every DELIAN system and are configured around the required cake moisture and throughput.
Automatic Filter Press
Automated filtration cycles for continuous industrial operation.
- Filtration area
- 10 – 200 m²
- Filtration pressure
- 0.6 – 1.6 MPa
- Capacity range
- 5 – 100 m³/h slurry feed
Chamber Filter Press
Plate-and-frame dewatering for construction and industrial slurry.
- Filtration area
- 10 – 250 m²
- Filtration pressure
- 0.6 – 1.6 MPa
- Capacity range
- 5 – 120 m³/h slurry feed
Closing & Plate-Shifting Systems
Closing units, plate shifters and the retrofit that turns a manual press automatic.
- Filtration area
- Filtration pressure
- Capacity range
- drive sized to the plate weight
Plant equipment
Thickeners, sized from the settling test
A thickener takes the cheapest water out of a slurry: the tank settles the fines, the rake draws them to the centre and the overflow returns to the circuit — so the filter press is sized on the underflow rather than on the whole flow.
Microtunneling & pipe jacking slurry treatment
Efficient separation and dewatering for bentonite and construction slurry generated during microtunneling and pipe jacking operations.
- 01 Slurry
- 02 Screening
- 03 Desanding
- 04 Conditioning
- 05 Filter press
- 06 Water recovery
- 07 Filter cake
Engineered around your slurry
Equipment selection follows the slurry, not the other way round. The four steps below are how a DELIAN dewatering solution is put together.
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01
Slurry testing
Process evaluation based on actual slurry characteristics.
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02
Process design
Equipment and process selection based on capacity, solids concentration, geology and target cake moisture.
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03
System integration
Filter press combined with slurry conditioning, screening, separation and water recovery where required.
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04
Global support
Installation, commissioning, training, spare parts and technical support.
Project references
Applications, capacities, equipment configuration and measured results from delivered projects.
Industrial sludge dewatering
- Treatment capacity
- 2 × 40 m³/h
- Filter press model
- 2 × automatic press, 1250 × 1250 mm
- Cake moisture
- 22 – 30 % dry solids
TBM slurry treatment plant
- Treatment capacity
- 300 m³/h
- Filter press model
- 4 × membrane press, 1250 × 1250 mm
- Cake moisture
- 35 – 45 % dry solids
Microtunneling slurry dewatering
- Treatment capacity
- 90 m³/h
- Filter press model
- 2 × chamber press, 1000 × 1000 mm
- Cake moisture
- 30 – 35 % dry solids
Engineered around real slurry conditions
Every dewatering plant is sized around the measured slurry: volumetric capacity, solids concentration, particle size distribution and the required cake moisture. Slurry testing comes first, equipment selection second.
The specialists for slurry treatment & dewatering
We design and build solid-liquid separation and sludge dewatering systems for tunneling, microtunneling, pipe jacking and industrial plants — from slurry testing and process design to commissioning and spare parts.
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