Optimizing source water blends for corrosion and residual control in distribution systems

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TypeArticle
Journal titleJournal/American Water Works Association
Volume98
IssueMay 5
Pages107115; # of pages: 9
AbstractUnderstanding the issues involved when multiple source waters are blended, particularly impact to distribution system water quality is important. A multi-objective technique is demonstrated that will aid in evaluating blends to identify acceptable water quality for simultaneous control of lead, copper, iron and monochloramine levels in distribution systems. Blends of three different source waters (groundwater, surface water and desalinated water) are evaluated. The modeling results indicate that the different pipe materials often have conflicting water quality requirements for release abatement. Corrosion of copper and lead pipes for instance was increased by increasing alkalinity, whereas increasing alkalinity was beneficial in reducing the release of iron corrosion products from pipes. Increasing sulfates was found to reduce the release of lead, while iron release increased. These conflicting water quality requirements for lead, copper and iron release necessitate the evaluation of the tradeoffs between water quality and the corrosion response.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number49262
18343
NPARC number20378311
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Record identifier07e3c8c6-f25e-432d-9505-8b8480ce8316
Record created2012-07-24
Record modified2016-05-09
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