Nalco Water SCALE-GUARDTM PLUS programs combine tailor made chemical programs, new monitoring and control technology, and most importantly mechanical, operational and chemical best practices. Nalco Water's analytical capabilities and extensive resources enable us to accurately assess your scaling problem and develop cost-effective solutions.

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Management of inorganic contaminants begins at the digester and plays a critical role in controlling the problems such contaminants can create throughout the pulp mill. Water optimization and process changes can result in the accumulation of tenacious scale deposits in critical areas. In addition, many pulp mills have modified their washing and bleaching processes due to changing environmental regulations. All of these changes have created an ideal environment for increased scaling problems, reduced brightness ceilings, escalating energy costs, imbalances in organic levels, and increased operating costs.

Success Stories

Paper Roll in Mill

A 340-TPD bleached Coated and Uncoated Freesheet Kraft mill was experiencing significant problems with digester scale deposition, causing frequent shutdowns to boilout as well as…


This mill had been running a competitive anti-scalant program for four years. The program was performing poorly, as the bleach plant had to shut down every…