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Andritz completes sludge screw press rebuild at Stora Enso Anjala

Andritz has revealed that it has successfully completed the rebuild of a sludge screw press at Stora Enso’s Anjala paper mill in Anjalankoski, Finland.

Sludge screw press at Stora Enso’s Anjala mill after the upgrade (photo courtesy Andritz).
Sludge screw press at Stora Enso’s Anjala mill after the upgrade (photo courtesy Andritz). Sludge screw press at Stora Enso’s Anjala mill after the upgrade (photo courtesy Andritz).

Austria-headed international technology group Andritz has revealed that is has successfully completed the rebuild of a sludge screw press at Stora Enso’s Anjala paper mill in Anjalankoski, Finland. Anjala Mill belongs to the Paper division of global forest industry major Stora Enso and it is one of Europe’s largest producers of book paper.

The turnkey upgrade of the sludge screw press, which has been out of operation for the past few years, included dismantling of the baskets and shaft, rebuild of the baskets with new screen plates, overhaul of the counter-pressure unit, supply of all parts needed for the overhaul, as well as erection of the unit. The upgraded press replaced an existing, outdated sludge dewatering unit.

Prior to award of the order, intensive laboratory sludge tests were conducted by Andritz in order to check the suitability of the screw press for the dewatering capacity needed and the sludge to be processed.

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