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Sludge bags
ZebraTube Dewatering and Containment
ZebraTube Dewatering and Containment

Reduce sludge volume and disposal costs with ZebraTube® Sludge Dewatering Bags.

Easy to Use

1. Choose your bag size

2. Pump your wastewater sludge into the bag


Water passes through the bag while solids are trapped inside, reducing your sludge waste volume and containing it for easy removal.

Range of Sizes

We supply for small and large operations, with bag sizes ranging from 1m³ to 1000m³.

Effective on Sludge

ZebraTube® sludge bags can handle a wide variety of wastewater types and applications. So what's yours?



  • Purchase our geobags directly online via our e-commerce store

  • All orders placed before 12pm will be booked for shipping day of order


ZebraTube® Sludge Dewatering Bags are used around the world to contain and dewater sludge. The bags are simple to use, robust and cost-effective for handling small or large sludge volumes.

The bags can be used on a range of sludge types and applications, including the following:



  • Dam or pond dredging

  • Mine pit dewatering

  • Liquid wastes processing

  • Sewerage sludge dewatering

  • Waste slurry drying

  • Mine tailing management

  • Construction site wastewater handling

  • Sewage

  • Flocculated Sludge

  • Activated Sludge

  • Coal

  • River Silt

  • Gold Tailings

  • Iron Ore

  • Acid Mine Drainage

Watch how they work

Wondering about your sludge? Call us to discuss your operation, or fill out the online form below.

What volume of wastewater are you handling?

For small operations, our 1 and 2 tonne hanging bags with forklift handles are ideal. You can buy these directly in our store.


For larger projects, we supply tubes from 5m up to 50m lengths. These lie flat on the ground or a liner for filtrate recapture.

For more info on sizes and pricing, fill out the online form below and we'll get back to you swiftly.

Sludge Dewatering Bag
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Wastewater pond dredging
ZebraTube® case study example:
Dam Dredging and Dewatering, 40,000 m³

Silted up wastewater ponds need desludging to regain dam capacity.

ZebraTube® Geotextile Dewatering Tubes, aka geobags, efficiently and cost-effectively dewater large sludge volumes.

Sediment dredged from the pond is fed to the bags. Flocculant is commonly added when dewatering biosolids to agglomerate the particles. It is injected in-line, downstream from the dredger.

Sludge particles settle in the tube, forming a filter cake on the surface of the geotextile to enhance filtration efficiency.

For this project, 9 m circumference x 35 m length dewatering tubes were used to dewater and contain a dredged volume of 40,000 m³.

Dewatering tubes were stacked in two layers due to limited available laydown area.​ The geobags were placed on a HDPE liner, allowing filtrate to be channelled back into the pond.

Download the case study here.



Contact us:

       0416 088 257


       message online

Share your project information, or ask to speak to one of our water treatment engineers 

How can we help?

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