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A paper mill found that it needed better raw water quality to produce a new brighter white grade. The mill’s existing system treated river water with coarse screens and bleach addition. The maximum brightness that could be produced with this process was approximately 80.
Aries Chemical was asked to provide a solution to improve the mill’s raw water treatment process. Aries surveyed the paper mill’s existing raw water treatment system and sent raw water samples to its development laboratory. At its laboratory Aries performed a treatability study, which simulates a full-scale treatment process. Aries produced several different treated water samples that were used to make hand sheets to measure brightness. Aries laboratory treated water produced hand sheets with a 90 plus brightness, which met the finished sheet brightness specification.
Water Source versus Sheet Brightness
|Water Source||Sheet Brightness|
|Original Raw Water Treatment Process||Approximately 80|
|Upgraded Raw Water Treatment Process||Greater than 90|
For further information on Aries’s solutions for the paper and pulp industry, particularly when it comes to improving raw water treatment, contact your Aries Chemical Representative or the Beaver Falls office at (315) 346-1489. Also view a printable version of this Aries Water Treatment Improves Paper Brightness case study.
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