• AWWA ACE91044
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AWWA ACE91044

  • Corrosion Control Studies: What Can Utilities Do?
  • Conference Proceeding by American Water Works Association, 01/01/1991
  • Publisher: AWWA

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Corrosion control studies provide the technical basis for selecting "optimal" treatment under the Lead and Copper Rule. A secondary consideration is the design and implementation of the selected treatment option. Good data on the chemical feed rates, based on their anticipated application points, must be collected during the testing program. The City of Boulder (Colorado) experience indicates that the use of recirculating pipe loops are easier to operate and require lower maintenance during testing periods. They appear to perform well for the evaluation of lead and copper corrosion control; however, they are not suitable for the inclusion of iron piping simultaneously with the copper and lead materials. Jar testing using coupons requires more attention since water quality changes occur during the testing period. Good results have been obtained for evaluating iron and lead corrosion control, but the performance for copper may be inadequate. Graphs show results for lead, copper, and iron corrosion in the Boulder study. A figure gives suggested corrosion control approaches based on pH.

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