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Tuesday, October 30, 2007

Closure and Corrosion at papermills

CLOSURE AND CORROSION. To save money, mills are closing the water systems. This allows the nutrients to concentrate, which increases problems with anaerobic bacteria.

Anaerobes grow in the absence of oxygen. As nutrients concentrate, other ions, such as potentially corrosive chloride ions, also concentrate.

Pushing more production through the machine than it was originally designed for can increase the problem.

It often results in a lack of adequate venting and increased misting. Corrosive chlorides carried in these mists evaporate on surfaces as they concentrate in a wet/dry buildup of chloride ions.
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