Savings in sulfuric acid purchases and neutralization costs have been realized. Of greater importance has been the consistent, predictable anodizing operation at all times even in the face of different requirements and tolerances from the wide variety of work pieces being processed. Also, the reduction of sulfate discharge from the facility has proved beneficial to the local POTW in terms of minimizing damage to concrete sewer lines. It is interesting to note that the new plant in Michigan has subsequently gone ahead with such a unit as a result of the positive results from this installation. Also, the sister plant in Minneapolis has had such a system for the last 11 years.
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