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 The upgraded press replaced an existing, outdated sludge dewatering unit.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.
Stora Enso is a leading provider of renewable solutions in packaging, biomaterials, wooden structures, and paper on global markets. The group has some 26,000 employees in more than 35 countries. Anjala Mill belongs to Stora Enso’s Paper division and is one of Europe’s largest producers of book paper.