ZebraTex – Ultrafine Dewatering Solutions

Geotextile dewatering of ultrafines without the need for flocculant addition

The dewatering of ultrafines has represented a challenging territory for various industries for some time. Zebratube® would typically assess a slurry’s particle size distribution and if the feed contained more than 30% of particles below 10 µm, the addition of flocculant to increase solids agglomeration would typically be required in order to ensure sufficient solids retention and good filtrate quality.

Zebratube® recognised the need for a dewatering bag that would retain these ultrafines without the additional operating and capital cost-implications associated with flocculation addition.

The ZebraTex composite lined geotextile was developed to address the need for a dewatering bag that can cost-effectively and efficiently retain and dewater ultra-fines.

Novel and patented technology for ultrafines dewatering

The dewatering of ultrafines has represented a challenging territory for various industries for some time. Zebratube® would typically assess a slurry’s particle size distribution and if the feed contained more than 30% of particles below 10 µm, the addition of flocculant to increase solids agglomeration would typically be required in order to ensure sufficient solids retention and good filtrate quality.

Zebratube® recognised the need for a dewatering bag that would retain these ultrafines without the additional operating and capital cost-implications associated with flocculation addition.

Comparison of Competitive Technologies
Current/alternative offering

Mechanical Dewatering Equipment: eg. Filter Press / Horizontal Belt Filter

Features of current/ alternative offerings
  • Capital cost-intensive
  • Skilled labour required
  • High maintenance and operational costs
  • Long lead times, typically imported equipment.
Competitive advantage

  • Operational cost
  • Low labour requirements
  • No high-skilled labour required
  • Short manufacturing lead times and quick deployment
Current/alternative offering

Geotextile dewatering bags with flocculant addition
Features of current/ alternative offerings
  • High operational costs (due to flocculant addition)
  • Difficulty adjusting to changing process conditions

 

Competitive advantage

  • Low operational costs
  • Adjustment to changes in process conditions is modular and easy.

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