FAQ

• High flow – organic sludge/flocculated sludge /sewage/oily-tar like sludge/activated sludge
• Low flow – inorganic sludge/river silt /fines/mineral concentrates
• ZebraTex – ultrafine sludge/clay silt/chrome fines/Calcium carbonate fines

• Type of sludge that needs to be dewatered
• Volume of sludge that needs to be dewatered
• Specific gravity of the dry solids
• Percentage of solids contained in the sludge (in-situ)
• Will the sludge be flocculated or not?
• Will this be a batch/once-off/continuous process?
• An indication of the particle size distribution
• Available laydown area for the bags (if big bags are required)

Reduction in moisture content varies based on the different types of material as well as other factors such as the specific gravity of the dry solids, the percentage of the solids contained within the sludge as well atmospheric conditions.

The bags can be gravity fed or pumped at the recommended flowrates based on the design specifications supplied by Zebratube.

In comparison to mechanical dewatering equipment, employing dewatering bags only requires less than 20 kwh/ton and this only applies during the filling phase, once the bags are full no energy will be required since the bags will be draining under gravity.

For the small -scale dewatering bags, these come readily fitted with loops that can be used by forklifts to lift and dispose of possibly in a skip for landfilling if applicable. The bigger bags/tubes can be broken open and the dry material collected for landfilling or if within the respective environmental limits, the dry material can be used for agricultural purposes. There are various uses for the dried material, but all this depends on the nature of the material.

Contact Zebratube for pricing. You may send a pricing enquiry to info@zebratube.co.za