Technology that gets the job done.
ZebraTube® geotextile dewatering bags are ideal for dewatering projects of all sizes. They offer a low-maintenance, easy to implement solution for rapid dewatering of large sludge volumes.
Simple
With no moving parts the bags need little ongoing maintenance and energy to dewater your sludge.
Scalable
Bags can be filled in tandem allowing you to easily scale your project as needed. Use them to supplement your current process if wastewater volume has exceeded your capacity.
Smart
Our geotextile bags are a cost-effective dewatering option to help you meet EPA regulations or recover valuable filtrate and dry solids.
No fuss. Some muss. (It is wastewater treatment!)
"So how do they work?"
ZebraTube® dewatering bags use woven polymer fabrics as semi-permeable membranes to trap the solids inside. The sludge is pumped in and the geotextile acts as a filter, allowing water to pass through but retaining the solid matter.
As dewatering occurs, the slurry partially blinds the geotextile, forming a filter cake on the surface to improve the filtering process.
When the bags have filled and completely drained, the solid material is dry enough to remove or re-use. Depending on the slurry, moisture contents between 40-60 per cent are achievable in short dewatering periods and even lower if bags are allowed to consolidate for extended periods.
Bags laid for filling
Filling, drawdown & consolidation process
Bags being filled
We offer support during the planning and operational phases of your project. In person or remote. However you need us.
What size is your project?
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For smaller sludge volumes, our 1m³ and 2.45m³ hanging bags are ideal - especially if you're low on space. For larger projects, we supply tubes from 5m up to 50m lengths.
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Give us a call to speak about your project scope and requirements.
Small-Scale Dewatering
Industries: Mining | Agriculture | Food & Beverage | Manufacturing | Small-scale water & wastewater treatment
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ZebraTube® small-scale square bags are ideal for dewatering smaller sludge volumes on a batch or continuous basis.
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The open-top configuration ensures you can easily access and monitor the dewatered material. Forklift handles are fitted to the bag for swift handling and disposal.
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Our bags can dewater nearly any type of slurry they are filled with, so why not select one of our small-scale bags to test on your operation?
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Bag Filling Process
Need a bigger size?
Try our dewatering tubes for large-scale projects.
1 Sludge enters the bag via pumping or gravity drainage.
2 In some cases, a flocculating agent is added to agglomerate particles and increase dewatering efficiency.
3 Solids settle in the bag and a filter cake forms on the geotextile surface, enhancing filtration through the material. Filtrate can be collected and re-used.
4 Dry solids within the dewatering bags are removed.
Large-Scale Dewatering
Sludge types: Biosolids | Sewage | Flocculated sludge | Animal waste | Oily waste | Coal | River silt | Gold Tailings | Pulp & Paper | Mud | And more...
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Tubes can be
STACKED
to save space
ZebraTube® tubular bags are suitable for large dewatering projects.
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Tube sizes range from 5m circumference by 5m length, to 30m circumference by 50m length.
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The stackability of tubes enables efficient use of space, while the quality of the geotextile fabric allows for swift dewatering of large sludge volumes, with minimal labour requirements.
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Each roll of geotextile goes through a comprehensive set of factory tests to ensure absolute quality in tensile strength and permeability.
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Our geofabric tubes can dewater a range of slurries.
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Contact us to discuss your project, or try one of our small-scale bags for your own analysis.
Tube Filling Process
1 Sludge enters the tubes via pumping or dredging.
2 In some cases, a flocculating agent is added to agglomerate particles and increase dewatering efficiency.
3 Solids settle in the tube and a filter cake forms on the geotextile surface, enhancing filtration through the material. Filtrate can be collected and re-used.
4 Dry solids consolidate within the dewatering tubes as the filtrate drains through the geotextile. The contained material can then be removed for disposal or re-use.
ZebraTube® case study example: Magnetite recovery from process plant sumps using geotextile dewatering tubes.
