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Mixing it up at upgraded treatment plant

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Following a highly successful upgrade to its wastewater process, Glatfelter, a global supplier of engineered materials, has invested in mixers made by Landia. Manufacturers of quality key products for industries such as food and beverage, electrical, building, and medical, Glatfelter first sought to address downtime, as well as health and safety issues caused by an ageing and awkward effluent mixing system.
An open-topped 1,000 m3 above ground (7-metre) glass-lined steel tank used for pH correction was fitted with an internal propeller mixer that, for repair and servicing, was only accessible via vertical ladders and then the use of a cumbersome mechanical winch; but as Glatfelter’s project manager, Howard Williams explained, the problems were numerous.
“Failures with the mixer had become all too frequent, so on top of the arduous process of having to retrieve it, it meant downtime in having to wait for it to be repaired, and sometimes replaced altogether with a brand-new unit,” he said. “This had become a costly ongoing exercise that was no longer viable.”
A new mixing system that was easier to manage
“No matter how careful...

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