Atana Limited

Atana Limited

- Volute Dewatering Press

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Save on water, save on power, save on space. The Volute dewatering press offers both sludge thickening and dewatering in one machine. Suitable for industrial sludges, primary and secondary treatment sludges, aerobic and anaerobic bio solids, digestate dewatering and oily sludges thanks to its self-cleaning moving ring mechanism that prevents clogging. Atana have completed installations in the dairy, food manufacture, rendering plant, brewing, distillery and anaerobic digester sectors.

The volute has no rotating body with the accompanying high speeds, so noise and vibration are minimized, which improves overall comfort in the work environment.

High resistance to oily sludge:
Dewatering oily sludge means that clogging is more likely to occur, and is difficult to clean from other types of dewatering equipment. The self-cleaning mechanism of the volute deals with this process easily.

Applications across a wide range of processing sectors:
Municipal water and wastewater treatment plants, industrial waste treatment plants, food/beverage production plants, dairy farming, meat processing plants, chemical manufacturing plants, machinery manufacturing plants, metal processing plants and laundry wastewater amongst others.

The volute runs automatically 24-hours on site without a machinist due to its automatic, sensor-controlled operation. In addition, daily maintenance is minimal and will not require any skilled labour.

The volute is easy to install with minimal construction costs. It has a small footprint with no thickening or storage tanks needed, which makes it the perfect choice when you are considering the replacement of existing dewatering equipment.

Accommodates expanding volume 
An increase of sludge in the future can easily be accommodated with the volute’s cylinder unit without much increase in the initial cost.

2-year Warranty and after sales service
All products are accompanied by a 2-year warranty, and our after-sales service ensures that operators are comfortable with the day-to-day running and maintenance of the volute.

The dewatering cylinder is constructed from an expanse of alternating fixed rings, moving rings and spacers enclosing a screw, which is conical, tapering towards an end Plate.

The moving rings have a slightly smaller diameter than the screw, and their width is slightly smaller than the width of the spacers, which causes their continuous movement during operation. The moving rings continuously clean the sludge between the gaps and prevent clogging.

The first part of the screw section is called the Thickening Zone, thereafter, the pitch of the screw narrows with the gaps between the rings and the screw pitch decreasing towards the end plate.

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